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4 - Recommendation on the Yarmouth Avenue (Broadway to US 36) Improvement Project Community Environmental Assessment Process (CEAP) CITY OF BOULDER TRANSPORTATION ADVISORY BOARD AGENDAITEM MEETING DATE: May 13, 2002 SUBJECT: Public Hearing and Consideration of a Recommendation to City Council on the Yarmouth Improvement Project Community Environmental Assessment Process (CEAP) TO: TAB Members FROM: Public Works Department Tracy Winfree, Assistant Director of Public Works for Transportation Stephany Westhusin, Transportation Projects Coordinator Rod Rindal, Project Manager Noreen Walsh, Transportation Planner BOARD ACTION REQUESTED: Consideration of a recommendation to City Council. FISCAL IMPACT: This $1.7 million project is funded by the Transportation Capital Improvement Program as well as city utility funding. Private developments will also be paying for their portion of street and storm sewer improvements. PURPOSE: This item provides the Transportation Advisory Board (TAB) with the Community and Environmental Assessment Process (CEAP) document for the proposed Yarmouth Improvement Project. The CEAP document (Attachment A) includes information on the project purpose, proposed improvements, preliminary plans, and the CEAP checklist. Attachment B includes the comments received through the Development Review Committee (DRC) process and the staff responses to those comments. BACKGROUND: Yarmouth Avenue, from Broadway to U.S. 36, is a two-lane road in north Boulder that is classified as a minor arterial. A temporary asphalt sidewalk exists on the south side of Yarmouth Avenue, west of 19' Street, and there are short sections of sidewalk on the north side which have recently been installed as part of private development construction. Storm drainage is currently collected and conveyed in roadside ditches. The Yarmouth Improvement Project was identified during the North Boulder Subcommunity Plan process in 1995. The community design intent for this section of Yarmouth, as described in AGENDA ITEM # Page 1 the North Boulder Subcommunity Plan, was to have a mixture of residential, retail and office uses on it as well as a range of dwelling and office sizes and types. Yarmouth is adjacent to the Broadway SKIP transit corridor and with the proposed project improvements will provide a range of transportation options to people who live, work, recreate and/or have personal business there. During the 1996 Transportation Master Plan Update, the North Boulder Subcommunity Plan implementation was identified in the list of street network projects to be completed. This project is included in the 2002-2007 Transportation Capital Improvements Program for the city of Boulder. Properties on Yarmouth Avenue, as well as properties to the north and south of this street, are beginning to experience the development planned for in the North Boulder Subcommunity Plan. This project will upgrade the existing roadway to city of Boulder standards for a minor arterial and support the new, additional uses and community dwelling there. PROPOSED IMPROVEMENTS AND TRAFFIC ANALYSIS: The Yarmouth Improvement Project proposes to provide a pavement overlay, curb and gutter, sidewalks, bike lanes, trees, street lighting, medians, and storm drainage improvements to Yarmouth Avenue from Broadway to U.S. 36. This project has presented a number of transportation issues to address, including bicycle/pedestrian facilities, traffic operations issues, and traffic calming. Below is a summary of the issues that were analyzed and the staff recommendation. For a more in-depth discussion of these issues, please refer to Attachment A, the Yarmouth CEAP document. Yarmouth Avenue currently carries approximately 2,400 vehicles per day and the posted speed limit is 30 miles per hour. The speed data indicates that the 85'h percentile speed is 41 miles per hour. A review of accident data showed seven reported accidents in the past three years, and no significant patterns were noted. Bicycle/Pedestrian Issues This project includes construction of on-street bike lanes. At the first open house meeting, a resident proposed including a separated (by curb) on-street bike lane to address their concerns about adverse interaction with traffic in on-street lanes, particularly trucks. As staff discussed at the open-house meeting, this would require an increase in ROW or attaching the sidewalk. Additionally, a curb- separated bike lane design creates difficulties for snow removal, street maintenance, and drainage. It was determined that this trade-off was not consistent with the North Boulder Subcommunity Plan. As an alternative, the southern sidewalk could be increased to 10 feet, providing space in the form of a 10-foot wide multi-use path for both pedestrians and bicyclists off the street. The south side was selected since the north side has longer segments of sidewalk already constructed at six feet as well as more intersecting streets. Staff presented this as an alternative cross-section at the second public meeting. The meeting attendees unanimously supported the original cross-section of bike lanes and sidewalks on both sides of the street (i.e. no multi-use path on south side). This included the support of the original resident that had requested a curb-separated bike lane design. Staff is recommending AGENDA ITEM # Page 2 construction of the cross section alternatives as shown in the Yarmouth CEAP document. As stated earlier, the Yarmouth Improvement Project includes construction of sidewalks on both sides of the street, generally detached sidewalks in the residential areas and wider, attached sidewalks in the commercial areas. The proposed center landscaped medians on Yarmouth Avenue at 17`h Street and 19th Street are expected to provide some level of traffic calming benefits, as well as pedestrian crossing enhancement. Beyond this proposed improvement, no additional crossing treatments are recommended at this time due to the low existing pedestrian crossing volumes and the City of Boulder's Pedestrian Crossing Warrants. Traffic Signals An evaluation was conducted to determine the present and future needs of traffic signals based on current and projected traffic volumes. The evaluation determined that the Broadway/Yarmouth intersection does not currently meet traffic signal warrants but does meet the warrants in the long- term based on the projected traffic volumes. Conduit will be placed under new construction areas to reduce costs and impacts when the anticipated signal is installed in the future. To address short- term delays for westbound traffic and provide the needed lanes for the future traffic signal, the Yarmouth cross-section at Broadway will include three travel lanes: one eastbound lane and two westbound lanes (a left and a right turn lane) Signal warrants were not met for any other intersection along Yarmouth Avenue; therefore staff is not recommending installation of traffic signals at any other intersection, or anticipate the need for traffic signals in the future. Multi-Way Stop Control At the first public meeting there were several requests to install stop signs on all approaches at the 17" Street -Lemon Place and 19`h Street intersections with Yarmouth Avenue. There were also comments indicating a preference for the existing two-way stop control. The traffic consultant for the project evaluated the available traffic, pedestrian, and bicycle volumes at the two intersections per the MUTCD warrants. The evaluation indicated that the minor street (17"' and 19`h Streets) volumes are below the warrant thresholds. The staff recommendation is to continue the existing side-street stop control; stop signs should not be installed on Yarmouth Avenue at these intersections. Left Tum Lanes The need for eastbound and westbound left turn lanes at the unsignalized street intersections on Yarmouth Avenue was evaluated using National Cooperative Highway Research Program (NCHRP) guidelines. These guidelines have been previously used for city of Boulder projects and provide a reasonable trigger for when left turn lanes may be beneficial. The results of the evaluation show the warrants are not met for any of the unsignalized streets. Based on a review of the future traffic volumes and the turn lane warrants, a separate left turn lane along Yarmouth Avenue was not included in the preliminary plan design for the interior streets, but are being provided at the Broadway/Yarmouth intersection and the US 36/Yarmouth intersection. AGENDA ITEM # Page 3 Traffic Calming The existing 85'' percentile speed on Yarmouth is 41 miles per hour which is above the posted speed limit of 30 miles per hour, and the street may be a candidate for traffic calming and the Boulder Neighborhood Traffic Mitigation Program (NTMP). Prior to full consideration of traffic calming, residents would need to apply for the Boulder NTMP program. Following the November 6, 2001 public meeting, staff contacted neighbors on Yarmouth who had raised concerns about the speeding problem and notified them of the procedures necessary to enter the NTMP. A NTMP petition has not been submitted by this neighborhood. Staff reviewed the feasibility of constructing center landscaped medians at the following locations to minimize the straight street view along Yarmouth Avenue: east of 14' Street, at 17' Street-Lemon, and at 19' Street. This type of improvement will help to establish character zones for the corridor as well as provide some traffic calming effects. To construct these improvements within the existing ROW, the sidewalks would need to be attached at the center median locations or additional sidewalk easement will need to be obtained. Staff has included center landscaped medians at the above locations in the Yarmouth Improvement Project preliminary plan design. Yarmouth Realignment at Broadway The preliminary project plans include the realignment of Yarmouth to the north at the Broadway intersection. The realignment would provide for the future extension of Yarmouth west of Broadway. The proposed alignment was developed several years ago in an effort by city Transportation staff, city Real Estate staff and property owners to develop an acceptable alignment for Yarmouth, minimizing impacts to existing properties. The realignment will require minor property acquisition east of Broadway and future significant right-of-way dedication/acquisition west of Broadway when that area develops. PROJECT SCHEDULE: The initial phase of construction will include the undergrounding of existing utilities and the construction of the stone sewer system. Following completion of this phase, staff plans to begin the street construction. Currently staff expects to begin street construction in the late summer/early fall 2002 and have the street construction completed within four months. In order to have the most cost-effective and resource efficient project, the beginning of the street improvement construction will be dependent upon the completion of the utility work and coordination with the expected development in the area. During construction, one lane of traffic in each direction will be open; there will be a shift in the Yarmouth Avenue roadway alignment during each phase of construction. CEAP REVIEW PROCESS The CEAP document was submitted on April 1, 2002, and was reviewed by other city departments through the DRC review process. See Attachment B to view the DRC comments and the Transportation staff responses to the comments. PUBLIC COMMENT AND PROCESS The planning and public involvement activities for the Yarmouth Improvement Project began in fall 2002. A project newsletter and meeting invitation was distributed in October to interested AGENDA ITEM Page 4 citizens as well as residents and property owners in the area bounded by Lee Hill Road, U.S. 36, Violet Avenue and just west of Broadway. At the first public open-house meeting on November 6, 2001, the proposed street cross-sections and improvements were displayed for review and feedback from the neighborhood. The feedback received at the meeting was used to develop more final project designs. On February 28, 2002, staff held a second public meeting to present these designs and obtain input. A postcard was mailed out to the neighborhood notifying them of the upcoming Public Hearing and TAB recommendation on the Yarmouth CEAP. Staff has established several lines of communication with the community for this project. A project Web page was created and is updated as new information is produced. Questions and feedback are received via this Web site. The project phoneline was created and provides updated information and the opportunity to leave a comment or question about the project. See the CEAP document in Attachment A to view all of the public input received to date. Planning and coordination with other affected entities such as utility and ditch companies, neighborhood organizations, and private property owners has begun and will continue throughout the project design and construction. FOLLOW-UP INFORMATION FROM THE APRILS, 2002 TAB MEETING At the April 8, 2002 TAB meeting, staff briefed the Board about the Yarmouth Improvement Project proposed improvements and public process to date. Following this briefing the Board posed several questions regarding the project. The following is a response to those questions: 1. Why build the initial cross-section (from Broadway to 14'" Street) now? Is this cost prudent if adjacent development is to occur soon? Response: Design of the ultimate cross-section will be included for the south side of Yarmouth Avenue where development will likely occur soon. The initial cross-section is recommended for the north side of Yarmouth between Broadway and 14" where development is not anticipated in the near future. Transportation staff will also be coordinating design and construction with the expected private developments on the other portions of Yarmouth Avenue. 2. Is there going to be a right-of-way reservation or a right-of-way dedication for the extra 12 feet of right-of-way need for the ultimate cross-section (from Broadway to 14'b Street)? Response: Discussions are ongoing between Planning staff and representatives for the North Boulder Village development to develop the details for the final cross-sectional dimensions and elements and the resulting property dedication or acquisition. The properties north of Yarmouth Avenue would be required to make necessary right of way dedications or reservations when they redevelop. 3. Are there any major issues of concern from the neighborhood? Response: The neighborhood participants at both public meetings were generally very supportive of the project improvements. Specific questions and concerns are noted in Attachment A, Appendix F which staff addressed at, or subsequent to, the public meetings. AGENDA ITEM Page 5 STAFF RECOMMEDATION Staff recommends implementing the following improvements as part of the Yarmouth project alternative: • Street pavement improvements and widening to accommodate the bike lanes and curb and gutter with realignment at Broadway for future Yarmouth extension • Curb and gutter • Sidewalks - 6-foot wide detached sidewalks in the 14' Street to U.S. 36 section except at some of the median locations if additional easement is not possible to acquire; 8-foot wide attached sidewalks along the north side of Yarmouth Avenue in the Broadway - 14" Street section; the recommended width for the North Boulder Village site (south side of Yarmouth between Broadway and 14t° Street) is being developed through discussion between Planning and Development Services staff, Transportation staff and representatives for the development ■ Bike lanes - 5-foot wide, exclusive of the gutter • Medians - between 14`h and 15' Streets, at 17'h Street and 19" Street • Street trees along south side of Yarmouth from 14" to 19" Streets and median landscaping • Street lighting - generally at the intersections (existing and future) along Yarmouth Avenue ■ Storm drainage system • Utility undergrounding. BOARD ACTION REQUESTED Staff requests board review and recommendation to City Council on the Yarmouth Improvement Project CEAP. If there are further questions or comments on this item, please contact Rod Rindal at ext. 3265 or Noreen Walsh at ext. 4301. ATTACHMENTS: Attachment A - Yarmouth Improvement Project CEAP Attachment B - DRC Comments and Staff Responses to DRC Comments AGENDA ITEM # Page 6 ATTACHMENT A Yarmouth Improvement Project CEAP AGENDA ITEM # Page 7 _ - 7 r E$ROQKF_E_____ - - _ 00 j k 1 ~ SCR. 1, Y I I I ~ - BllER CR ~'-Al - ~9-0 -t - , a i 1 I i t , L wl ~ OI z, - - _ l NE L _M ua, - _ T m j- -I- - -{-WI r m~ } - - - - ~ pl Gal, - U - 1 I I - - ~JO ~I W! _7 , r ! isriN SD 1 of - 01 - - I Q a ~T o - - ---a r-i - - - - - I - I I E DICO T~DR ' L IL_ I I v - E'fY D ~HAMBERS y ~ - -Al LT1-7 ] _LLE LA I Harlow Platts Park / Tairview High ;~ch l EENBRIAR $1l QQ GG 1 _ BVSD property - 1F F ~~T all , - - _ `spy ~ • ; _ - - t ~W moo ; t , ~OV4 GQ. 1 It S -y Proposed Fairview NPP Area - Proposed Fairview NPP Area 5 5 Q- G Included in proposal--petitioned. - - - - Included in proposal--not petitioned. Gillaspie South--not included 12 ; because of existing restrictions. ..............Subject of Gillaspie petition-- I not included in proposal. i CITY OF BOULDER COMMUNITY AND ENVIRONMENTAL ASSESSMENT PROCESS Yarmouth Improvement Project (Broadway - US 36) 1. Description and location of the project: Yarmouth Avenue, from Broadway to US 36, is a two-lane road in north Boulder that is classified as a minor arterial. The Yarmouth Improvement Project proposes to provide a pavement overlay, curb and gutter, sidewalks, bike lanes, trees, street lighting, medians, and storm drainage improvements to this section of Yarmouth Avenue. 2. Background, purpose and need for the project: Yarmouth Avenue, from Broadway to US 36, is currently a two-lane asphalt street. A temporary asphalt sidewalk exists on the south side of Yarmouth west of 19s' Street, and there are short sections of sidewalk on the north side which have recently been installed as part of private development construction. Storm drainage is currently collected and conveyed in roadside ditches. The Yarmouth Improvement Project was identified during the North Boulder Subcommunity Plan process in 1995. The community design intent for this section of Yarmouth, as described in the North Boulder Subcommunity Plan, was to have a mixture of residential, retail and office uses on it as well as a range of dwelling and office sizes and types. Yarmouth is adjacent to the Broadway SKIP transit corridor, and with the proposed project improvements, will provide a range of transportation options to people who live, work, recreate and/or have personal business there. During the 1996 Transportation Master Plan Update, the North Boulder Subcommunity Plan implementation was identified in the list of street network projects to be completed. This project is included in the 2002-2007 Transportation Capital Improvements Program for the City of Boulder. Properties on Yarmouth Avenue, as well as properties to the north and south of this street, are beginning to experience the development planned for in the North Boulder Subcommunity Plan. This project will upgrade the existing roadway to city of Boulder standards for a minor arterial and support the new, additional uses and community dwelling there. 3. Description of project alternatives and summary of major issues: The Yarmouth Improvement Project presents a number of transportation issues to be addressed, including, bicycle/pedestrian facilities, operational issues, and traffic calming treatments. This section of the CEAP provides a description of the issues examined while developing the project alternative. g i Existing Conditions Yarmouth Avenue currently carries approximately 2,400 vehicles per day and the posted speed limit is 30 miles per hour. Traffic counts and speed were collected during April 2001 in the AM and PM peak hours. The traffic data and existing conditions are presented in Appendix A. The speed data indicates that the 85 h percentile speed is 41 miles per hour. A review of accident data showed seven reported accidents in the past three years, and no significant patterns were noted. The intersections with Broadway and US 36 are unsignalized with stop control on the Yarmouth Avenue approaches. Pedestrian crosswalks are marked on the north, east, and south legs of the intersection with Broadway. Additionally a pedestrian crossing is marked on the east leg of the intersection with 19`h Street. In 2000, the City constructed a temporary asphalt sidewalk on the south side of Yarmouth Avenue to provide a pedestrian connection on Yarmouth between 19'h Street and Broadway. There is no continuous walk on the north side of the street. Pedestrian counts at 17`h Street/Yarmouth Avenue and at 19th Street/Yarmouth Avenue are included in Appendix A. The 204 bus route runs from south Boulder to the downtown transit center, north on 19`h Street and west on Yarmouth to Broadway. Currently the bus service turns around via Broadway, Lee Hill, US 36, and Yarmouth back to 19`h Street south. To serve this route, there are two stops on the north side of Yarmouth Avenue, one near 19`h Street and one near Broadway. See Appendix B to view the map for the 204 bus route. Street improvements - Cross sections Staff began designing the project by reviewing the cross sections presented in the North Boulder Subcommunity Plan . This plan includes two different cross-sections: • Commercial ($roadway to 14`h Street) - For the commercial area between 14`h Street and Broadway, the cross-section has a larger, attached sidewalk, on-street parallel parking, a bike lane, and one through traffic lane in each direction. The section could alternately provide a left turn lane for westbound Yarmouth traffic destined for southbound Broadway if on-street parking is removed. • Residential (14`h Street to US 36) - In the residential area from 14`h Street to US 36, the cross-section includes the following components: a detached sidewalk, a tree lawn, a bike lane, and a through lane. Staff then compared the North Boulder Subcommunity Plan cross sections with the city's current standards for these types of improvements and known and proposed development and developed the following revisions to the Yarmouth Avenue cross sections. The following includes a brief description and the cross-sections: Yarmouth at Broadway: Ultimate This cross-section includes the wider, attached sidewalk to accommodate future retail/commercial uses with potential cafe seating, on- street parallel parking, one bike lane and one travel lane in each direction, and a westbound left-turn lane at Broadway. In order to accommodate the wider sidewalk, left turn lane and provide parking, additional right-of-way (ROW) dedication will be required on each side of the street as the adjacent commercial parcels develop. Yarmouth at Broadway: Ultimate s d 4 99lmtK ,IIMwG I n pa~ II.MwG 96WUc t 5.0'-~-&0' 5.t+'F--nO' ~0 0.0-tg,D' S.O 8.0•--X5.0 58.0' 88.0 I• 4Z.0 98.0' Y C 8 E o d • Yarmouth at Broadway: Initial- This cross-section includes an 8 foot attached sidewalk, bike lanes, and three travel lanes which can all be accommodated within the existing 64 foot ROW. This section is proposed to be constructed initially as part of the Yarmouth Avenue improvement project. Future developers will be responsible for constructing the additional improvements to provide the Ultimate cross-section. Construction of portions of the ultimate cross section could potentially be completed with the Yarmouth Improvement Project if adjacent development is imminent. Yarmouth at Broadway: Initial S~DEtiNX p I SIDE Wk 8.0' 6.5•~>>0' ~~0.0-}-11.0•--~t-6.5' 8.0' 95.0' f.5' 6a.D' 30.0 3..0 F w • Yarmouth from 14a' to 19a' - Through the primarily residential areas, a detached sidewalk is proposed. The cross-section will include a bike lane and one travel lane - in each direction. No on-street parking will be provided. The bike lane width has been increased to the current city standard of 5 feet (exclusive of gutter) from the North Boulder Subcommunity Plan cross-section. Yarmouth from 14th St to 19th St. ~ q SOUTH } 'DE iL4 z SIDEWALK PLAN TSCAPE' POTENTI.U. SIDE dlAU( n S1 FUTURE V I1 PLANTSCAPE 6.0' 7.5 8.5'-+-1t.0' 35.0 0 84.0' 30.0' 3<.0' 0 3 ~ rc ~ o z 3 N_ X K • Yarmouth at US 36 - Near US 36 the cross-section includes three travel lanes, bike lanes, and sidewalks. Sidewalks will be detached where permitted by the existing ROW width. Yarmouth at U.S. 36 SOUTH sot SIDEW X 4 SIDEWALK wzss i 6.0 45.0'- srts 6,A' - MCs MR- Bicycle/Pedestrian Facilities As stated earlier, this project includes construction of on-street bike lanes. At the first open house meeting a resident proposed including a separated (by curb) on-street bike lane to address their concerns about adverse interaction with traffic in on-street lanes, particularly trucks. As staff discussed at the open-house meeting, this would require an increase in ROW or attaching the sidewalk. Additionally, a curb-separated bike lane design creates difficulties for snow removal, street maintenance, and drainage. It was determined that this trade off was not consistent with the North Boulder Subcommunity Plan. As an alternative, the southern sidewalk could be increased to ten feet, providing space in the form of a 10-foot wide multi-use path for both pedestrians and bicyclists off the street. The south side was selected since the north side has longer segments of sidewalk already constructed at 6 feet as well as more intersecting streets. Yarmouth With Multi-Use Path Alternative n ~ 4 sME v 510E SIDEWAIJC PNXT cC ` RNfa'C=Pi WLhU SE 4 If PAiM wtdtn umes 6.5--Y-tt.0' t1.0'--1--6.5' wfdlh t0.0' VO~CS ---35.D - 64.0' 30.0' 34.0' o n z z The options were presented at the second public meeting and the meeting attendees unanimously supported the first option of bike lanes and sidewalks on both sides of the street (i.e. no multi-use path on south side). This included the support of the original resident that had requested a curb- separated bike lane design. As stated earlier, the Yarmouth Improvement Project includes construction of sidewalks on both sides of the street, detached sidewalks in the residential areas and wider, attached sidewalks in the commercial areas. The project team looked at additional pedestrian crossing improvements. For example, construction of a raised crossing across the eastbound right turn lane on Yarmouth Avenue at US 36 was discussed. Since there is no future sidewalk planned along US 36 south of Yarmouth Avenue at this time, and pedestrian/bicycle volumes will be very low, the improvement was not further evaluated. The proposed center landscaped medians on Yarmouth Avenue at 17`h Street and 19`h Street are expected to provide some level of traffic calming benefits, as well as pedestrian crossing enhancement. Beyond this proposed improvement, no additional crossing treatments are recommended at this time due to the low existing pedestrian crossing volumes and the City of Boulder's Pedestrian Crossing Warrants. Operational Issues Traffic Signals - An evaluation of existing and future traffic volumes was conducted as part of the Traffic Impact Study prepared for the People's Clinic Site. See Appendix C to view the forecasted traffic volumes. The evaluation was based on the Manual on Uniform Traffic Control Devices (MUTCD) published warrants for recommending traffic signal installation. The evaluation indicated that the intersection of Broadway/Yarmouth Avenue does not currently meet traffic signal warrants, but does meet the warrants in the long-term based on the projected traffic volumes. To address short-term delays for westbound traffic and provide the needed laneage for the future traffic signal, the Yarmouth cross-section at Broadway should include three travel lanes: one eastbound lane and two westbound lanes (a left and a right turn lane). Although a traffic signal will not be installed at Yarmouth/Broadway at this time, the signal poles and conduit will be installed on the east side of Broadway at Yarmouth in anticipation of the future traffic signal installation. The signal poles will function as street lights initially. Signal warrants were not met for any other intersection along Yarmouth Avenue. At US 36/Yarmouth Avenue, delays for eastbound left turns are expected to continue to increase over time, but the volume of traffic making this movement is very low. Also, motorists destined for places north of town have the alternative of traveling to Broadway where they can make a right turn movement that will have a shorter delay. All-Way Slop Control - During the public meeting there were different comments requesting the installation of stop signs on all approaches at the 17`h Street -Lemon Place and 19th Street intersections with Yarmouth Avenue. There were also comments indicating a preference for the existing two-way stop control. The MUTCD publishes warrants to assist in determining whether all-way stop control is appropriate. The MUTCD indicates that all-way stop control is generally used where volumes on all approaches are equal. It also points out that the purpose of stop signs is to assign rights of way and they should not be used for speed control. TransPlan evaluated the available traffic, pedestrian, and bicycle volumes at the two intersections per the MUTCD warrants. The summary is provided as Appendix D. The evaluation indicates that the minor street (17th and 19th Streets) volumes are below the warrant thresholds. Our recommendation is to continue the existing side street stop control; stop signs should not be installed on Yarmouth Avenue at these intersections. Left Turn Lanes - The need for eastbound and westbound left turn lanes at the unsignalized street intersections on Yarmouth Avenue were evaluated using National Cooperative Highway Research Program (NCHRP) guidelines. These guidelines have been previously used for City of Boulder projects and provide a reasonable trigger for when left turn lanes may be beneficial. The results of the evaluation show the warrants are not met for any of the unsignalized streets. Discussions were held both with staff and the public about providing a continuous left turn lane along Yarmouth Avenue, even though warrants were not met. Several of the meeting attendees at the project's second public meeting were concerned that traffic congestion would occur without a left turn lane. It was noted that while there may be benefits to removing turning vehicles from the through traffic stream, the existing and projected traffic conditions do not warrant this. Additionally keeping turning vehicles in the through lane will slow through traffic and help to address the speeding issue which was another concern for several citizens at the public meetings. Providing the center turn lane would require attaching the sidewalk throughout the project corridor. Based on a review of the future traffic volumes and the turn lane warrants, a separate left turn lane was not included in the plan design. 14`h Street Offset - There is an existing residential development directly opposite of 14th Street on the south side of Yarmouth Avenue. As a result, the future southern leg of 14th Street will be offset from the north leg by approximately forty feet. Since there will be no center turn lanes provided, the opposing left turns will not overlap but will turn from parallel lanes which is acceptable. If there were a center turn lane at this location, there would be a potential for conflicts from overlapping left turns in the center turn lane. (The overlap is when a vehicle making a westbound left turn to south 14t' Street needs to occupy the same space as a motorist making an eastbound left turn to_north 14th Street.) Because the turn lane warrant was not met and there is a potential for conflicting movements, a center turn lane is not recommended on Yarmouth Avenue at the 14th Street approaches. Existing Private Accesses - The gas station east of Broadway currently has a long, undefined access on the north side of Yarmouth Avenue. As part of the improvement project staff will work with the property owners to establish a curb cut meeting current Boulder design standards. The remaining access points for properties east of the gas station are planned to remain. Traffic Calming Alternatives - The existing speed data shows that the 85th percentile speed is 41 miles per hour. The 85th percentile seed is the speed at which 85 percent of the total traffic is driving at or below. The existing 85` percentile speed on Yarmouth is above the posted speed limit of 30 miles per hour and the street may be a candidate for traffic calming and the Boulder Neighborhood Traffic Mitigation Program (NTMP). Prior to full consideration of traffic calming, residents would need to apply for the Boulder NTMP program. Following the November 6, 2001 public meeting, staff contacted neighbors on Yarmouth who had raised concerns about the speeding problem and notified them of the procedures necessary to enter the NTMP. A NTMP petition has not been submitted by this neighborhood. Yarmouth Avenue is not a critical emergency response route and the Fire Department indicated that they would support some traffic calming but would prefer no traffic circle at the intersection of 19th/Yarmouth. Staff reviewed the feasibility of constructing center landscaped medians at the following locations to minimize the straight street view along Yarmouth Avenue: • east of 14th Street • at 17th Street-Lemon • at 19th Street This type of improvement will help to establish character zones for the corridor as well as provide some traffic calming effects. To construct these improvements within the existing ROW, the sidewalks would need to be attached at the center median locations or additional sidewalk easement would need to be obtained. As previously noted, a raised cross-walk in the eastbound right turn lane at US 36 is not being proposed due to the low projected pedestrian/bicycle volumes and absence of a planned sidewalk along US 36 south of Yarmouth Avenue. Center landscaped medians at the above locations are included in the Yarmouth Improvement Project preliminary design. Other Improvements Street Lighting - There are limited existing street lights along the Yarmouth Avenue corridor. Public comment requested additional street lighting as part of this project. City staff has reviewed the existing lighting locations and proposed additional locations. The additional street lights will be incorporated into the final design plans. Transit - RTD route 204 currently travels from the transportation center, north on 19'h and loops around using westbound Yarmouth Avenue, northbound Broadway, and eastbound Lee Hill, returning on US 36 southbound and westbound Yarmouth Avenue for a short distance back to 19'h Street (See Appendix B). In the future, the route may be modified so that it will travel both eastbound and westbound on Yarmouth Avenue west of 19`h Street. If the route changes, one or more bus stops will need to be created on the south side of the street. Bus shelters may be constructed as new developments occur adjacent to Yarmouth Avenue as part of the Transportation Demand. Management strategies required of new developments. Streetscape - The North Boulder Subcommunity Plan recommends that Yarmouth Avenue east of 14th Street have street trees placed in the planting strip between the curb and detached sidewalk. The plan also recommends trees within the sidewalk area in the commercial area west of 14'h Street. Presently the streetscape consists of short lengths of street trees and turf adjacent to newer developments on the north side of Yarmouth. Further street landscaping along Yarmouth will be required by the city as a condition of development for the remaining undeveloped or redeveloping properties, primarily along the north side of Yarmouth and along the south side of Yarmouth west of 14th Street. Most of the remaining frontage along Yarmouth is the Boulder Meadows mobile home community on the south side of Yarmouth from 14'h Street to US36. Street trees would need to be included in the planting strip along this length of Yarmouth in order for this area to meet the recommendations of the North Boulder Subcommunity Plan. Staff recommends providing the street trees along Boulder Meadows as part of the Yarmouth project since redevelopment is not likely in the foreseeable future. Boulder Meadows will need to agree to maintaining the planting strip, including providing the water for irrigation to sustain the planting. Staff recommends that the owners of the remaining frontages provide the desired street trees as the properties redevelop and irrigation systems are installed to sustain the plantings. Yarmouth Realignment at Broadway - The preliminary project plans include the realignment of Yarmouth to the north at the Broadway intersection. The realignment would provide for the future extension of Yarmouth west of Broadway. The proposed alignment was developed several years ago in an effort by city Transportation staff, city Real Estate staff and property owners to develop an acceptable alignment for Yarmouth, minimizing impacts to existing properties. The realignment will require minor property acquisition east of Broadway and future significant right-of-way dedication/acquisition west of Broadway when that area develops. Utility Undergrounding - Overhead utilities exist along several lengths of the Yarmouth Avenue The remaining lengths have been placed underground by adjacent development. The overhead utilities are located: • Between Broadway and 14`h Street on the north side of Yarmouth • Between 150' Street and 17`h Street on the north side of Yarmouth • Between 19'h Street and U836 on the south side of Yarmouth v Undergrounding of the utilities along Yarmouth has not been identified as a priority by the City of Boulder as part of its Xcel undergrounding fund CIP program. Undergrounding will be evaluated with Xcel Energy to determine the costs for the length between Broadway and 14`h and 19t' and US36. These overhead lines will need to be relocated in any event to accomplish the street improvements. Overhead relocation of these lines is more problematic, likely requiring additional ROW or easement acquisition due to the realignment of Yarmouth at Broadway and the proposed location of the median treatment at 19th Street. The additional costs for acquiring property and the credits that may be available from Xcel may make the undergrounding more desirable. The length between 15th and 17th will be relocated underground by the adjacent owners as a requirement of their development. Storm Sewer - The construction of the Yarmouth Avenue improvements will require the removal of the roadside ditches and conveyance of storm drainage along the proposed curb and gutter. A storm sewer system will need to be constructed to collect the storm runoff to maintain acceptable water levels in the street as required in the City of Boulder Design and Construction Standards. The storm sewer will also be used by future developments north of Yarmouth Avenue to convey the storm drainage from their parcels. These developments will be required to pay a portion of the storm sewer costs as a condition of their development. The costs will be proportionally based on the flow rates released from their properties. 4. Preferred project alternative: Staff recommends implementing the following improvements as part of the Yarmouth project alternative: ■ Street pavement improvements and widening to accommodate the bike lanes and curb & gutter with realignment at Broadway for future Yarmouth extension ■ Curb and gutter ■ Sidewalks - 8 foot wide attached sidewalks in the Broadway -14`h Street section; 6 foot wide detached sidewalks in the 14th Street to US 36 section ■ Bike lanes - 5 foot wide, exclusive of the gutter ■ Medians - between 14th and 15th Streets, at 17th Street and 19th Street Street trees along south side of Yarmouth from 14t' to 19th Streets and median landscaping ■ Street lighting - generally at the intersections along Yarmouth Avenue ■ Traffic signal poles and conduit at Broadway for future use • Storm drainage system • Utility undergrounding. See Appendix E to view the preliminary project plans. 5. Public input to date: The planning and public involvement activities for the Yarmouth Improvement Project began in Fall 2002. A project newsletter and meeting invitation was distributed in October to interested citizens as well as residents and property owners in the area bounded by Lee Hill Road, US36, Violet Avenue and just west of Broadway. At the first public open-house meeting on November 6, 2001, the proposed street cross-sections and improvements were displayed for review and feedback from the neighborhood. The feedback received at the meeting was used to develop more final project designs. On February 28, 2002, staff held a second public meeting to present these designs and obtain input. Staff has established several lines of communication with the community for this project. A project webpage was created and is updated as new information is produced. Questions and feedback are received via this website. The project phoneline was created and provides updated information and the opportunity to leave a comment or question about the project. See Appendix F to view all of the public input received to date. Planning and coordination with other affected entities such as utility and ditch companies, neighborhood organizations, and private property owners has begun and will continue throughout the project design and construction. 6. Staff project manager: Rod Rindal, Project Manager, City of Boulder Transportation Division (303) 441-3266 7. Other consultants or relevant contacts: Noreen Walsh, Transportation Planner, City of Boulder Transportation Division (303) 441-3266 Goals Assessment: 1. Using the BVCP, describe the primary city goals that the project will help to achieve: General Community Design Facilities and Services Environment Economy Transportation Housing Social Concerns and Human Services General - The Yarmouth Improvement Project will help to achieve the general goals of the Boulder Valley Comprehensive Plan by providing additional urban facilities on Yarmouth Avenue which is located in Area I of the BVCP, and by keeping the citizens informed and involved in the project planning. Environment - The Yarmouth Improvement Project works to achieve the Environmental goals by assessing the project impacts on the environment and developing appropriate mitigation through this Community Environmental Assessment Process (CEAP) document. Specific components of this project such as the storm water system and the design and construction of the medians will also meet the environmental goals described in the BVCP. Transportation - The Yarmouth Improvement Project achieves the BVCP Transportation goals by providing an accessible transportation facility for all modes of travel and completing another section of the city's multimodal transportation network. 2. What are the trade-offs in terms of city policies and goals? This project is helping to promote the General, Environmental and Transportation policies and goals of the BVCP without any major trade-offs to other city policies and goals. 3. Is this project referenced in a master plan? If so, what is the context in terms of goals, objectives, larger system plans, etc.? If not, why not? The Yarmouth Improvement Project was identified during the North Boulder Subcommunity Plan process in 1995. During the 1996 Transportation Master Plan Update, the North Boulder Subcommunity Plan implementation was identified in the list of street network projects to be completed. This project helps to complete the desired street improvements and facilities identified in the North Boulder Subcommunity Plan and TMP and helps to complete the system . of multimodal transportation corridors and the goal of offering a balanced transportation system. 4. How will the project exceed city, state, or federal standards and regulations? Impact Assessment 1. Using the attached checklist, identify the potential impacts of the proposed project or (if applicable) the project alternatives Community and Environmental Assessment Process Checklist Projecttitle: Yarmouth Improvement Project ; Y A C L m Y Q Y V m 0 V IL A. Natural Areas _ 1. Disturbance to species, communities, habitat, ecosystems? No u~ fi u i!f~°'ir ~ d f It .'~xC'''Mi< { .e~'o - B. Riparian Areas/Floodplains 1. Encroachment upon the 100-year, conveyance or high hazard flood zones? _ No 2. Disturbance to or fragmentation of a riparian corridor? No C. Wetlands 1. Disturbance to or loss of a wetland on site? No D. Geology and Soils 1.a. Impacts to unique geologic or physical features? No b. Geologic development constraints? No c. Substantial changes in topography? No a.-dE0'}~ iu e+'h 'a ;~i?=1a~4~rak'_'i;: E. Water Quality 1. Impacts to groundwater or stormwater quality? No 2. Discharges to the stormwater or sanitary sewer system? No 3. Potential impacts to streams, ditches, or other water bodies? No 4. Groundwater contamination on site? No I fi s, F. Air Quality 1. Impacts to air quality? No G. Resource Conservation 1-.-Changes-in water use? Yes__ 2. Increases in energy use? Yes 3. Generation of excess waste? No V H. Cultural/Historic Resources _ 1.a. Impacts to a prehistoric or archaeological site? No b. Impacts to a building or structure over fifty years of age? No c. Impacts to a historic feature of the site? No d. Impacts to significant agricultural land? No w t r' td+:M r- X = Applicable 0 = Not Applicable Community and Environmental Assessment Process Checklist 1. visual Quality 1.a. Effects on scenic vistas or public views? No b. Effects on the aesthetics of a site open to public view? _ No c. Effects on views to unique geologic or physical features? No a+t!' d`` 1 g'm+~~=*i~°3. J. Safety 1. Health hazards, odors, or radon? No 2. Site hazards? No OR M'111~61E!"Iffl K. Physiological Well-being 1. Exposure to excessive noise? No 2. Excessive light or glare? _ No 3. Increase in vibrations? No ° w ~e s: 14~'t~7?I~, ;.".~r,kr"'?pw:_ gyp. 1 ?~rer. Ct'.iR ma ;w"Mi'm L. Services 1. Additional need for:_ a. health care/social services? No b. sanitary sewer services? c. police services? No d. fire protection? No e. recreation or parks facilities? _ No f. libraries? No g. transportation improvements/traffic mitigation? No h. parking? No i. affordable housing? No j. open space/urban open land? No k. power or energy use? No 1. telecommunications? No UT .:I . M. Special Populations 1. Effects on: a. persons with disabilities? _ No b. senior population? No c. children? No d. restricted income persons? No X = Applicable 0 = Not Applicable Community and Environmental Assessment Process -Checklist Questions- G. Resource Conservation 1. Describe potential changes in water use that will result from the project. Additional irrigation systems will be required for the proposed landscaped medians and any street trees planted along Yarmouth Avenue. The plant types and irrigation systems will be designed to minimize water use. 2. Describe potential increases in energy use that may result from the project. Additional streetlights are being recommended as part of the project. High pressure sodium luminaires will be used which is an efficient, low energy consumption light source. Appendix A - Yarmouth Avenue Existing Traffic Conditions Appendix B - Bus Route 204 Map Appendix C - Yarmouth Avenue Year 2020 Projected Traffic Volumes Appendix D - Multi-Way Stop Control Evaluation Appendix E - Preliminary Project Plans Appendix F - Public Input Appendix A Yarmouth Avenue Existing Traffic Conditions un o SPEED DATA: 18th / YARMOUTH 1 l 85 Pertlentlle Speed • 31 mph . Average Speed-36 mph z/p 0/5 Speed Urnd a 30 mph Percerd Speeding T7 % 0/13 STO )e-0 25 221/111 0/25 Ru,C N^ ~1 \\o I r N ut D I I 2J1/]9~59/185 \ \ I I 279/133 r-5/8 I / 6/12J/ $TO ~ \ I / 1J8/125~ 1 \ n GS j I I gl ~9~F \ ° ° / r I / Lee Hill Rd. ! I I / ACCIOENTS f I / - 1 rear end rgUOaY r 3 14 - 1 off read " 01 NE ROJGK I pn arr I / ACCIDENTS ACCIDENTS - 1 on mm / - z left tom m reona'e I / auecaplxaa I / ACCIDENTS rrarene - 1 left turn t boom of utax truck , Yemlgulh Ave. \ \ \ etnxing wemeaa cable 2,400 / 41 51, 0 1 1 19 \ ar ors / a+ or w. arr N \ e v[ 8 r:x i vllplet ave. 11/1 39/67 /1'" 10 STO 43//4] / /e/o oroe e/ I / 15/22 41/10 / on~Vp a)0 / 116/105 TI1 89/98 16/4 17/21 \a / goe I / \ ' \mw \ sae r 1 4 3/6 1 9/27 44/84 N - 105~ ~74/)0 I]/1])1/]6~ S`TQ 67/82 81/ STTO 11/38 V,0 6/JO 53/67 1\`r/ LEGEND u,' m a rxx/xx AMIPM Peek HaaTMIFA Valarres X,XXX Average DORY Traft XX XX au csr OWOFFRTDRMwdip Cant YARMOUTH RECONSTRUCTION PROJECT Tannsacnn EXISTING CONDITIONS N550C/ATE$ //K. ConsVging Engineers SCale 1'=333' Date trmI2 Drawn by RAC Job # 00178 Figure 1 Appendix B Bus Route 204 Map i I Bus Route 204 Lee NIB + ~Geoewey FUn Cards YlMmoaS. a Cresth Elenwttary~ J, High YN Jr High °o ~ Monro• m ~ 2IM r Iris - A ~CWUmbko North Ek arY Lmf Stops S T N Selected Trips 14th?WalnW Palma of Interest 301 M 2M M .j _ p3 Hop Intera =7 ,p v Mlaep Jump N t NOP Is RpuM 210 Peer PMd Street Mall 4*MOt a o BpdWer Station AS B DG M NY c a CenYOn Arapahoe A JIIrdF r p N anpe . qte rpraP Umvenln' of COlpreEo SOO Basemersnopplnp Corner E P Flatiron 4 210 r BeaNlne BOUND r park-n.Ride 20. 225 e i Bepartmant of Commetced qtO' q~ Ly,3 C o SUODitf Jaya... a +f Z y ~ Tabro Meae Dr . ~ e_zos 22> r a•a• • t \ SWD M6 a ~O a T.W. Mese •e. re4, shopping Center Ssr Creek a Ewrlenlary OC O Appendix C Yarmouth Avenue Year 2020 Projected Traffic Volumes N 1 R LEGEND ~ g e - ~_~lto1 J ~ ` MI,PYP~k11W7nepYa4n~w x xxx 20/+0--,-/ Aw D"Tti v 0/5 STO T0/5 3e5/205--.,~ 0/5 \ / 251,51 15/25 25/30 325/140 _t 05/335 / \ / 1 300/18035/50 1 \ / \ / Lee Hill RC. HMIDAY 1 / RN-71/R a..Dea.Dee \ / wee Ytvmouat Ave. / 6.300 11 \ $ l 1 / Vk>let Ave. 1 \ 15/5 \ 85/100 11/5 4(9 2s/15 / ,5/25 45/10 10/10125/185 1 245/230 ~21~70 YARMOUTH RECONSTRUCTION PROJECT anSPtnn YEAR 2020 PROJECTED TRAFFIC VOLUMES ConsWting Erpirreera Scale 1'=1000' Date Drawn by RAC Job # 00178 Figure Appendix D Multi-Way Stop Control Evaluation TP# 00178 Yarmouth Reconstruction Project 12/12101 Multi-Way Stop Control Evaluation (Per MUTCD 2000, Section 28.07) General: Multiway stop control can be useeful as a safety measure at intersection sif certain traffic conditions exist. Safety concerns associated with multiway stop include pedestrian, bicyclists, and all road users expecting other road users to stop. Multiway stop contril is used where the volume of traffic on the intersecting roads is approximately equal. They should be installed in a manner that minimizes the numbers of vehicles having to stop, and should not be installed on the major street unless justified by an engineering study. Stop signs should not be used for speed control. Note: A full warrant study requires 8 hours minimum of data collection. An indicator evaluation can be conducted using the Peak Hours - if the peak hours don't meet or barely meet the warrant it is unlikely that it will be met for 8 hours as the guidelines require. 17thNarmoulh 19th/Yarmouth AM PM AM PM Major Street Peak Hour Vehicular Volume (Total Both Approaches) 176 253 294 260 Minor Street Peak Hour Vehicle, Ped, Bike Volume (Total Both Approaches) 54 66 71 69 Number of Accidents/ 12 months susceptible to stop sin correction 0 0 85th Percentile Speed on Major Street 41 41 Note no ped or bike data, Assume +10 The following should be considered in the engineering study for a multiway stop sign: Limit Does,the intersection meet trafhcsiBnal.warrants,.and is signal - - - - A. installation pending? - `Na No - > 5 reported crashes112 months that are sttscep'a-bte,tWccirrecUonibyla",,-,; -,,`+70 B. multiwa stop control? 5 Na No Major Street vehicular volume (total both approches) average 300 C1 vehicles per hour for any 8 hours of an average day?, and 300 No No No No Minor Street vehicle, pedestrian, bicyclist volume (total both approaches) average >=200 units per hour for the same 8 hours C2 above? 200 No No No No Both Minor and Major Street Requirements Met - - - - - No No No No C3 Is the 85th percentile speed >40 mph? If yes, 70% of warrants: 40 Yes Yes Major Street vehicular volume (total both approches) average 210 vehicles per hour for any 8 hours of an average day?, and 210 No Yes Yes Yes Minor Street vehicle, pedestrian, bicyclist volume (total both approaches) average >=140 units per hour for the same 8 hours above? 140, No No No No Both Minor and Major Street Requirements Met No - No No N'o A, B, Or C not Satisfied individually, but B, C1, and C2 all satisified to D 80% B 4 Yes Yes C1-Major 240 No Yes Yes Yes C2 - Minor 160 No No No No C-Total 80% - - - - No ±=-Ma ~Na Ntr Conclusion: Nate`minarstreets, well belowavarrant=thteshalES :Warrant °j a,Met.~ ?Warrant NDJJAet,,= Appendix E Preliminary Project Plans a b P/L -P/L w a SALZMAN PROPERTY P/L P/L PA i P/IL JL -I r a ,Yw P/L P/L i REALIGNMENT FOR FUTURE 1 j WEESTO OF BROADWAY ' 20 0 20 40 ' SCALE IN FEET EXISTING i a RTD BUS STOP h li r ' i SALZMAN PR PI STA. 13+28.52 OPERTY D • 5' 03' 43.22' (LT) A i' PARCEL D • 5' 43' 4648' l J~ T - 44.20 A 1,000.00 SILCO OIL PROPERTY STA. 12+84,32 _ PT STA. 13+72.67 > 1. m 8 ~r o 0 mum 85' 39 _ _ o NOTE: BOOK 854. _ _ a S PAGE 59- POSSIBLEI?~ ~ _ - F- TITLE CONFLICT a P/L 1 I P/L - Z Z P/L P/L P o _ _ YARMOUTH- AVE I c o m o I r _ , SALZMAN PROPERTY MAN PROPERTY I - - m ( 4.5' RESERVATION FOR F FUTURE FOUR MILE CANYON (F1662. 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STA. 41+0n YARMOUTH IMPROVEMENT PROJECT NOVEMBER 6, 2001 OPEN HOUSE MEETING PUBLIC COMMENT Improvement Suggestions: • Would like lighting on the south side of Yarmouth so he can see the sidewalk as he walks home at night. • Need a traffic signal at "Make a Mess" on 19th Street. • Crossing improvement at U.S. 36 to get to North Boulder Trail network. • Requesting a transit shelter at Yarmouth & 16tH • Some sort of traffic calming is needed - People are speeding a lot - traffic circle at 17th. • Would like to see a 4 way stop sign at 17th and Yarmouth because of the speeding problem. • Add trees along south side of Yarmouth. • Vary sidewalk alignment - Not so linear. • Have the bicycle lane between the sidewalk & landscaping, at street level (detached bike lane). Then the landscaping would separate the cars, buses & trucks from the bikes. • Traffic lights are long overdue at Yarmouth and Broadway and will probably be needed at Hwy 36 and Yarmouth when the drive-in project is finished. • Because Yarmouth will become much busier as the various projects are completed, I think you need to consider a center turn lane as a higher priority than "future plantscape". Questions/Comments: ♦ How long will construction last? ♦ Will there be left turn lanes along Yarmouth? ♦ Will the Skip be re-routed onto Yarmouth? It is preferable. ♦ What will be done with the uncovered ditch? ♦ Will the road be moved to the south? ♦ Is there a plan to widen to 4 lanes? ♦ Who will complete the path on the west side from Holiday drive-in to Yarmouth? ♦ What are possible traffic calming techniques? ♦ Enforcement of the speed limit is needed. ♦ Doesn't want stop sign or traffic circle at 17th Street ♦ Double check transit data and get transit data for Broadway north and south of Yarmouth. ♦ Concerned about uncovered ditch and an oil/gas truck falling into the ditch. Possible re- direction of traffic onto Violet and Lee Hill. ♦ One of the NASHTO guidelines was to look at truck & bus traffic. ♦ What will happen to the existing ditches? If they go underground, will any maintenance to them affect the properties on the north of Yarmouth between 17th and 18th? ♦ Will construction be sensitive to the fact that the homes in Buena Vista have no egress except via Yarmouth? Please don't block our way out. YARMOUTH IMPROVEMENT PROJECT NOVEMBER 6, 2001 OPEN HOUSE MEETING PUBLIC COMMENT ♦ Will the Skip bus ever be re-routed along Yarmouth again, especially per People's Clinic needs? If so, this needs to be taken into consideration and may support the need of a center lane. ♦ What route does the city plan to emphasize as the main entry/exit into the drive-in property? If it is Yarmouth and either 17th or 18th, then I think the city ought to plan to install speed bumps on those streets. (hope the city will emphasize Lee Hill Road, which has more commercial traffic and deliberately de-emphasize Yarmouth. Yarmouth Improvement Project Public Meeting #2 February 28, 2002 Comments: - More Photo Radar on Yarmouth - there is a big speeding problem - Install speed display signs like the ones on Edgewood Drive - SW comer of Yarmouth & 19'h - make sure you make a smooth transition with the sidewalk. Right now walkers have to go into the street to get back onto the sidewalk. - Try to construct north side first so the sidewalk on the south side is open during construction. - Concerned that the roadway will be designed and will not allow cars to pass buses - thinks a bus pullout is a good idea. - Another resident doesn't want bus pull outs and is happy with increased transit service. - Really like the plans and the proposed project. - All of the meeting attendees preferred the alternative of a 6' sidewalk on both sides of the street from 14th Street east to the alternative of a 6' sidewalk on the northside and a 10' path on the south side. uestions What warrants the traffic signals? What warrants a center turning lane? Are there any proposed changes to the SKIP transit service? What are the proposed street cross-sections? What is the project cost? Will developers pay for sidewalks? Are there plans to make storm drainage improvements? Yarmouth - Public Input received via phone 10/29/01 Pat (443-5982) - Lives in northwest comer of mobile home park. Her home floods a lot and more often and worse since the sidewalk was put in. 10/30/01 Keith Jenkins (443-5810) - Property owner in 1500 block of Yarmouth. Would like to see more pockets of parking from 14'h to 19th on Yarmouth. There is a need for it. 11/10/01 Mary Bevington (303-402-0482) - Would like a painted crosswalk at l4`' and 156' Streets. Would like a traffic signal or a flashing pedestrian crossing at Yarmouth and Broadway to help people cross Broadway. Would like speed humps and signs to slow the speeding down. 11105101 David Salzman (720435-1980) - Property on west side of Broadway at Yarmouth; wants to see if we can resolve the Yarmouth extension alignment location. 11/05/01 Mark Richards (303-417-0792) - Likes the design proposal. Has some suggestions that he will bring to the open house meeting. Page 1 of 1 Noreen Walsh - Yarmouth Improvement Project From: Alice Clark <aliceinboulder@crosswinds.net> To: <publicworks@ci.boulder.co.us> Date: 11/05/200111:04 AM Subject: Yarmouth Improvement Project To Noreen Walsh: I can't come to the meeting 11/6, but I have questions and concerns as a resident of the Buena Vista community. Overall, I believe this set of improvements may not be adequate to meet the needs of the community once development starts on the drive-in project, the project that may happen between 18th and Hwy 36, and the People's Clinic building. Following are my questions and comments. 1. What will happen to the existing ditches? If they go underground, will any maintenance to them affect the properties on the north of Yarmouth between 17th and 18th? 2. Will construction be sensitive to the fact that the homes in Buena Vista have no egress except via Yarmouth? In other words, please don't block our way out! 3. 1 see no proposed traffic lights. Lights are long overdue at Yarmouth and Broadway and will probably be needed at Hwy 36 and Yarmouth when the drive-in project is finished. 4. Because Yarmouth will become much busier as the various projects are completed, l think you need to consider a center mm lane as a higher priority than "future planiscape". 5. Will the Skip bus ever be re-routed along Yarmouth again, especially per People's Clinic needs? If so, this needs to be taken into consideration and may support the need of a center lane. 6. What route does the city plan to emphasize as the main entry/exit into the drive-in property? If it is Yarmouth and either 17th or 18th, then 1 think the city ought to plan to instill speed bumps on those sheets. The residents along Yellow Pine between those streets already drive too fast, and I can imagine how bad it will get with more development to the north. I hope the city will emphasize Lee Hill Road, which has more commercial traffic and deliberately de-emphasize Yarmouth. Thanks for the opportunity to comment. I hope I can have a response. Alice Clark 1786 Yaupon Ave. file://CATEMP\GW }00005.HTM 11/05/2001 ATTACHMENT B DRC Comments and Staff Responses to DRC Comments MEMORANDUM TO: Mike Randall, Planning Department FROM: Rod Rindal, Noreen Walsh, Public Works Dept. Transportation Division SUBJECT: Yarmouth Improvement Project DATE: May 2, 2002 Attached is additional information in response to the comments received by the Development Review Committee (DRC) on the above-mentioned project. The DRC comments and responses will be included in the packet that will be presented to the Transportation Advisory Board (TAB). At the May 13, 2002 TAB meeting, the Board will hold a public hearing and consider a recommendation to the City Council on the CEAP for this project. The CEAP document and the TAB recommendation will then be forwarded to the City Council for call-up consideration at their June 4, 2002 meeting. Please call Noreen Walsh at ext. 4301 if you have any questions or require any additional information related to the review of this project. Cc: Stephany Westhusin, Transportation Mike Sweeney, Transportation Michael Penny, Development Review Jay Brasher, Entranco Janet Hruby, Transplan Sandi Gibson, Studio 2 Design AGENDA ITEM # Page 8 I. REVIEW FINDINGS Significant issues remain with this design of Yarmouth; additional consideration should be given to: a. Inclusion of major private development projects which are imminent, coordination of improvements for new intersections. b. Resolution of the additional right of way required between Broadway and 14' Street. C. Possible redesign of the ultimate cross section between Broadway and 144 Street, to fit within the existing right of way. d. Design of the offset of 14' (ped and bike crossing) and realignment of 14`" Street as an alternative. e. Resolution of the design of the traffic calming islands, necessity and effectiveness, their location and size, loss of tree planting area at intersections, effect on existing and future homes where walk is attached adjacent to a minor arterial. A revision of the project design addressing these issues and allowing for additional review is recommended before proceeding. Response: Transportation staff will continue to coordinate with the entities constructing private development projects on Yarmouth Avenue on improvement and construction issues. Additional consideration has been given to the above issues and Transportation staff will arrange a meeting with Mike Randall, Case Manager for the Yarmouth Improvement Project CEAP, to further discuss the responses to the DRC comments. 11. CITY REQUIREMENTS Access/Circulation 1. The vicinity of Yarmouth between Broadway and 1441 is a concern for several reasons. The planning for both the proposed North Boulder Village Center located south of Yarmouth in this vicinity and the North Boulder Subcommunity Plan (NOBO plan) indicate that street trees are an essential part of the Yarmouth streetscape. The short term plans for this vicinity do not include street trees. The longer term plan for Yarmouth do include street trees, however 12 feet of additional right-of-way is required to achieve these and also the specified sidewalk width and on-street parking. It is not certain that more right-of-way can be obtained from this property owner since this additional 12 feet was not specifically indicated on a previously approved plan. Steve Durian, Public Works, 303-441-4493 Response: Transportation staff will continue to coordinate with the city's Planning and Development Services staff and the North Boulder Village Center on developing the preferred final cross section and the improvements to construct. Transportation staff has provided Planning and Development Services staff a draft alternative plan for Yarmouth that identifies potential right of way or easement impacts to the adjacent property based on our most recent coordination meeting. The proposed realignment of Yarmouth Avenue, to accommodate the future extension of Yarmouth west of Broadway, will reduce the additional right-of-way needed. The appropriate time to plant the street trees is at the time of development by the developer when irrigation systems are in place and can be maintained by the adjacent property owner. AGENDA ITEM Page 9 2. The private building improvements for the south side of Yarmouth (Broadway to 14th) are imminent (Site Review in progress). The ultimate design of Yarmouth on the south side should be the only consideration. The alignments of both 13' and 14'h Streets south of Yarmouth are contained in the engineering documents for the North Boulder Village Site Review. It is likely that these street improvements will be made at about the same time as the City of Boulder improvements. There should be a closely coordinated effort between Transportation and the developer in regards to timing and financial responsibility. Mike Randall, x4919 Response: As requested, the final Yarmouth Improvement Project plans will include a design for the south side of Yarmouth Avenue, from Broadway to 14th Street, based on the final approved ultimate cross section. Transportation staff will coordinate with the site representatives to determine the most efficient construction of the adjacent street, curb and sidewalk improvements on Yarmouth. Representatives of the North Boulder Village Center have already made inquiries about possibly constructing the Yarmouth improvements adjacent to their site rather than as part of the city's project. This could well be the most efficient method for completing the improvements, especially from a construction-sequencing standpoint for their site. Transportation staff will continue to coordinate with the city's Planning and Development Services staff and the North Boulder Village Center on improvements to construct, timing and financial responsibility. 3. Although not planned at this time, the alignment of 13th Street on the north side of Yarmouth should be noted so that future planning efforts for the private property do not overlook the necessity for a dedicated street right of way north of Yarmouth. Mike Randall, x4919 Response: The general 13th Street alignment on the north side of Yarmouth Avenue will be shown on the final Yarmouth Improvement Project plans. 4. Although not within the current scope of this project, a discussion of an alternative for the realignment of existing 14th Street north of Yarmouth should be included. Two blocks north, the Holiday Neighborhood project will include significant improvements along 14th including a major park. While 13th Street may be the ultimate north-south connection (east of Broadway) it is unlikely to occur within the foreseeable future. This will place the burden of north-south access, particularly by pedestrians and bicycles, on 14th for the next several years. Some consideration should be given to realignment (cost, safety, etc.). If, as an alternative, a future 14' Street realignment might be made in conjunction with a redevelopment of the private property the on the north side of Yarmouth, then the realignment should be noted so that future planning efforts for the private property do not overlook the necessity for a dedicated street right of way north of Yarmouth. Mike Randall, x4919 Response: Although realignment of the existing 14'" Street, north of Yarmouth Avenue, would be preferred, Transportation staff does not feel that benefits of realignment at this time outweigh the significant impacts to the adjacent property, the considerable cost to obtain this property and the cost to reconstruct a significant length of 14th Street. As noted in the CEAP, the Yarmouth design does not include left turn lanes on Yarmouth for any of the intersecting streets. This lessens the traffic conflicts of the offset intersection condition with the proposed alignment of 14"' Street south of Yarmouth Avenue, as left turning traffic on Yarmouth will be turning out of the through lanes rather than a shared left turn lane. Planning and Development Services may want to consider possible solutions to this in the future if the property redevelops. AGENDA ITEM # Page 10 5. There is an informal pedestrian access to 14`h and Yarmouth on the south side from the mobile home park. This is a well used path and some improvement should be provided to accommodate the pedestrians such as a sidewalk from curb to the property line. (Note: a street light is indicated at the same location) Mike Randall, x4919 Response: Transportation staff is aware of the pedestrian access and will provide a connection to the proposed Yarmouth sidewalk. The proposed street light will be placed in a location that will not interfere with the connection. 6. Wintercress Lane (a proposed street located east of 17' Street serving the Sanitas Terrace subdivision) is not shown on these plans. Engineering plans have been reviewed and are near final approval. Please coordinate with Steve Durian at 303441-4493 to obtain grading and location information regarding this intersection. Response: Transportation staff will continue to coordinate with Planning and Development Services on the Sanitas Terrace subdivision and proposed street and storm sewer improvements. 7. Check whether the location of Wintercress Lane may interfere with the design and effectiveness of the proposed traffic calming island at 19'" Street. Mike Randall, x4919 Response: Wintercress Lane, as located on the current plans provided by Planning and Development Services, is located west of the proposed street modifications necessary to construct the median at 19`h and will not interfere with the proposed median. 8. The north side of Yarmouth from Make a Mess child care to 17`" will be fronted by single family residences with a setback of 25 feet (auto access by rear alley). Revised plans should clearly show the subdivided lots. Note that the sidewalk will be attached west of Make a Mess, will (should) the proposed homes affect the design of this portion of Yarmouth? Also note that the existing RTD bus stop is shown in this area. Also note that a light pole is shown north of the right of way line which will be in a residential front yard, concerning light pollution: is there a better location on the other corners? Mike Randall, x4919 Response: The proposed construction of the median at IV Street does not move the sidewalk closer to the homes along Yarmouth than the typical section for the detached walk areas. The median construction would likely eliminate planting area for 5-6 street trees along the north side of Yarmouth Avenue. Transportation staff has reviewed the location of the light pole and recommends that it remain in that location to best serve the pedestrian crosswalk and the intersection. The orientation and tilt of the luminaire will direct most of the light toward the street and have less of an impact on the adjacent houses north of Yarmouth. It is also preferable that the light be located as shown in the 8' utility easement behind the sidewalk, avoiding placing it in the attached walk. 9. The loss of street trees to accommodate the traffic calming medians is a concern to P&DS staff. It is not clear that the design or number of the center medians are an effective speeding mitigation measure that would justify the loss of street trees. Center medians appear to have a more significant value as a pedestrian refuge when located at pedestrian crossings (and one proposed island is not). An alternate configuration may be to have AGENDA ITEM #i Page 11 shorter center medians that would preserve more area for street trees. Steve Durian & Bev Johnson Response: The documented speeding problem (85"' percentile speed is 41 mph) along Yarmouth was a common concern of citizens that attended the first public meeting for the project. The median concept was presented to the citizens at the second meeting to help mitigate this problem by developing character zones as drivers transition from the commercial to the residential areas on Yarmouth Avenue. The medians will also help to break up sightlines on this long straight stretch of roadway. The installation of the medians was favored by a majority of the residents. The medians at 17"' and 19' will also provide a significant value for pedestrian crossings as you have noted in your comments. The median near 14"' was shifted to the east to eliminate potential problems with the offset between existing 14th Street north of Yarmouth and future 14th Street south of Yarmouth Avenue. Transportation staff proposes to obtain additional sidewalk easement along the south side of Yarmouth at 17th and 19th to allow the detached walk to continue in these areas. This will allow the street trees to be planted adjacent to the medians as well as in the medians. This will also be pursued with property at the northeast corner of Yarmouth and 17th that is not being redeveloped at this time. Additional easement is not practical for the median proposed east of 14"' due to existing physical constraints on the south side of Yarmouth and the existing development north of Yarmouth. Proposed plans for development also limit this potential on the northwest corner of 17th and Yarmouth and the northwest corner of 19"' and Yarmouth. Shorter medians could be a consideration but reducing their size will also reduce the landscaping that can be provided in the median. A goal is to make the medians significant features in the roadway, with the amount of landscaping and length each contributing to this. Transportation staff will continue to work with Planning and Development Services staff to optimize the median design to provide a balance between the medians and street tree plantings. Drainage 1. Where does the flow along the north curb go? Are there adequate drainage facilities (storage, piping, etc)? Response: The storm water will flow eastward along the north curb, into various inlets, and into the proposed storm sewer. Storm drain analysis has been completed for the area, considering all contributing drainage basins to determine the necessary storm drainage facilities. The analysis included the use of drainage reports for proposed developments provided by Planning and Development Services staff. 2. Some flow is intended from Wintercress Lane in Sanitas Terrace to Yarmouth, will this flow be significant enough to require storm drains at the intersection? Mike Randall, x4919 Response: Staff will review this as part of the final project design to determine what is necessary. Engineering AGENDA ITEM # Page 12 Flood Control 1. Are there any wells in the area that might be negatively impacted by the change to the storm sewers? Response: No. Groundwater barriers will be installed if groundwater is encountered during the construction of the storm sewer to mitigate any potential effects to the groundwater in the area. 2. Are there no wetlands in the gullies as shown? Was this an area that was originally mapped and there are no jurisdictional wetlands or, is this an area of new annexation in which a wetland analysis will need to occur? (Sue Ellen Harrison - CAO) Response: There are no jurisdictional wetlands on Yarmouth Avenue from Broadway to US 36. Lot Layout Plans are available for North Boulder Village, Sanitas Terrace, and the People's Clinic. Lot layouts, locations of walks, drainage facilities, setbacks, and other significant features which should be coordinated with the Yarmouth improvements should be shown. Mike Randall, x4919 Response: The plans and improvements for these developments will be shown on the final Yarmouth Improvement Project designs, if they are finalized by then. Miscellaneous Note that the approved name of the 'Holiday' project is now "Holiday Neighborhood." Change future references accordingly. Mike Randall, x4919 Response: This comment is noted. The applicant is responsible for obtaining approvals for any relocations or modifications to irrigation ditches or laterals from the impacted ditch company. Scott Kuhna, 303-441-3121 Response: Transportation staff will continue to work with the ditch company to obtain any approvals for relocations and modifications. Utilities 1. Manholes should be located outside of bike lanes, sidewalks, multi-use paths and wheel lines of streets. Scott Kuhna, 303-441-3121 Response: The plans will attempt to locate new manholes outside of the above mentioned facilities to the extent possible. The anticipated exception to this is for the Silver Lake Ditch lateral that currently runs in an open swale along the south side of Yarmouth Avenue from the proposed 16' Street to 19th Street. The project recommendation is to carry the irrigation water in a buried pipe to allow street tree planting along the south side of Yarmouth. The most and likely only viable location for this lateral is underneath the sidewalk to maintain the required grade for the ditch. This will require several manholes be located in the sidewalk for ditch cleanout purposes. Sidewalk compatible lids will be used on these manholes. 2. Parallel separations between utility mains and services to provide for adequate trench excavations and maintenance operations shall be as follows (All distances are measured AGENDA ITEM # Page 13 from outside of pipe to outside of pipe): Water - Sewer = 10 feet Water - Storm = 5 feet Sewer - Storm = 10 feet Response: Final project utility design will evaluate potential alignments. It is anticipated that the above requirements will be met. The final recommended locations will be reviewed with Utility Division engineering and maintenance staff. 3. Locating the proposed storm sewer along the landscaped strip south of the street would prohibit the installation of street trees on the south side of Yarmouth Avenue. Scott Kuhna, 303-441-3121 Response: The preliminary design for Yarmouth shows the proposed storm sewer system that will serve Yarmouth and the surrounding developments located primarily beneath the planting strip between the curb and sidewalk along the south side of Yarmouth Avenue. Transportation staff has recommended that the project include planting street trees along this area, which is adjacent to the Boulder Meadows mobile home community. This potential location along the planting strip is being evaluated because of significant cost savings and considerably less impact to traffic travelling along Yarmouth. Further review of storm sewer alignment during final design is needed to verify its feasibility in relationship to existing utilities and proposed improvements. The alternate alignment for the storm sewer is near the center of the existing street. Transportation staff reviewed this potential location with Utilities Division maintenance and engineering staff prior to considering this location. Utilities staff does not anticipate any problems related to impacts to the proposed reinforced concrete pipe that will be used for the storm drain. Transportation staff has also reviewed the potential storm sewer alignment beneath the planting strip with Forestry staff. They do not anticipate any adverse affects to the tree planting. Forestry does recommend that the top of the storm sewer pipe is at least two feet below the finished grade. Transportation staff will direct the design to include a minimum of two feet of cover for the storm sewer. AGENDA ITEM # Page 14