Non-Agenda Item - Update on the Goose Creek Underpass at Foothills Parkway Project
CITY OF BOULDER
TRANSPORTATION ADVISORY BOARD
NON-AGENDA ITEM
MEETING DATE: December 9, 2002
SUBJECT: Update on the Goose Creek Underpass at Foothills Parkway Project
TO: TAB Members
FROM: Public Works Department
Tracy Winfree, Assistant Dir. Of Public Works for Transportation
Stephany Westhusin, Transportation Projects Coordinator
Debbie Ritter, Project Manager
Noreen Walsh, Transportation Planner
PURPOSE:
This item provides the Transportation Advisory Board (TAB) with an update on the Goose Creek
Underpass at Foothills Parkway project, including a revised design and schedule.
BACKGROUND:
The Goose Creek Bicycle/Pedestrian Underpass at Foothills Parkway project was identified in
both the City of Boulder Transportation Master Plan (TMP) and the Greenways Master Plan.
Currently, the connection between the two portions of the Goose Creek Greenway path is
separated by Foothills Parkway, forcing the use of alternative routes. This project will improve
safety by providing a grade-separated crossing of Foothills Parkway and will complete a missing
link in the Goose Creek Greenway trail and the city of Boulder bicycle/pedestrian path system.
Planning and design of the Goose Creek Underpass project began in early 2002. The project was
reviewed through the Community Environmental Assessment Process and presented to the TAB
for their consideration. At the March 11, 2002 meeting the TAB made a motion to recommend
to City Council approval of the Goose Creek project CEAP, making every effort possible to
avoid simultaneous disruptions on both 28th Street and Foothills Parkway corridors and keeping
the TAB and public well-informed about project implementation. The TAB also included in this
recommendation a request to staff that special attention be given to the safety aspects and better
connections to local businesses on 47 h Street.
PROJECT UPDATE
Project Design - Originally the project was to build a 215-foot long grade separated crossing
underneath Foothills Parkway and the North Boulder Farmers Ditch. As final designs and cost
estimates were being completed, staff learned that the original project design would cost more
than $300,000 over the project budget. The project has now been designed in two phases. Phase
NON-AGENDA ITEM Page 1
I includes construction of a 113-foot long grade separated crossing underneath Foothills Parkway
and over the ditch, with connections to Goose Creek, 47`h Street and businesses. See
Attachment A for a Plan View of this revised design. This design will meet the project goals as
well as the project budget of $1.462 million. This design will also allow for a Phase II project
construction with little reconstruction of Phase I improvements. It should be noted that currently
there is no funding for the Phase II project.
The final design includes the underpass, multi-use path connections to Goose Creek path,
Foothills Path and the businesses on 47`h Street, site landscaping and removal of non-native plant
species. Staff considered installing a skylight but chose not to, due to maintenance and overall
functionality concerns. However, the lighting plan for the underpass includes lights every 16 feet.
The underpass also includes public art. See Attachment B for details of the railing.
Schedule - Staff plans to put this project out for contractor bids in January 2003. Construction is
expected to begin this Winter 2003. Staff is aware of the other projects being constructed on
parallel roadways and will coordinate information and schedules with these projects. However,
there will be sometime when construction is taking place on these 3 corridors (Broadway, 28`h
Street, Foothills Parkway) at the same time. However, during construction of the Goose Creek
Underpass project there will be a shift in the Foothills Parkway roadway alignment but not a
reduction in the number of travel lanes.
Construction is anticipated to take approximately seven months concluding in the late
summer/early fall 2003.
If there are further questions or comments on this item, please contact Debbie Ritter at ext. 3253
or Noreen Walsh at ext. 4301.
ATTACHMENTS:
Attachment A - Plan View of Revised Goose Creek Underpass Project Design
Attachment B - Hand Rail Details
NON-AGENDA ITEM Page 2
Attachment A
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Computer File Information Sheet Revisions ~ j3F B004
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Creation FINAL GOOSE CREEK PEDESTRIAN BOX Project No./Code
Date 9/19102 Initials: JRM
Last Modification Date 11/11/02 Initials JRM O Centennial No Revisions SITE AND GEOMETRY PLAN FOOTHILLS
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Drawing File Name 01SIT01- Revised: Issued by: 12645
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Computer File Information Sheet Revisions alF 60U(o FINAL GOOSE CREEK PEDESTRIAN BOX Project No./Code
LL Creation Date 10/09/02 Initials: JRM ~P
Last Modification Dote 11/10/02 Initials: JRM o Centennial No Revisions HAND RAIL DETAILS FOOTHILLS
Full Path Engineering, Inc. Revised: Issued by: 12645
Drawing File Name 01HRD01 0 726 cola Blvd. ,
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Acad Ver. Scale Units 0 (703) 279-1972 URkS 0 Void Sheet Subset 87 Subset Sheets 67 Sheet Number 25