The Foothills Parkway Bike and Pedestrian Underpass will begin construction on September 23 and is expected to take approximately one year to complete.

This project will provide an underpass crossing of Foothills Parkway for pedestrians and bicyclists, and will replace the existing bridge, which is at the end of its service life and doesn’t meet current ADA or bike facility guidelines for accessibility and design.

The project supports the city’s Transportation Master Plan by maintaining infrastructure in good condition and providing transportation options for Boulder residents, visitors and employees. This $4.4 million project is funded with $3.2 million in federal transportation funds and $1.2 million in city transportation funds.

Park East Park will remain open during construction. However, due to new sidewalks being installed along the southside and Colorado Ave. sides of the park, intermittent disruptions to adjacent bicycle and pedestrian paths may occur. For more information about parks and impacts on parks, visit

There will be minimal disruption of vehicular traffic. Four lanes of Foothills Parkway will remain open and be shifted to the east side during the first phase of construction.  However, there will be occasional off-peak lane closures. The posted speed limit in the construction area will be reduced to 30 mph to maintain the safety of workers and the traveling public.

Tree relocation has been a part of the pre-construction process for the Foothills Parkway underpass project. The city recognizes the importance of trees and has worked diligently and responsibly to transplant and plant new trees to replace those removed. Last April, in advance of the project, six trees were transplanted to the Flatirons Golf Course, while the remaining 10 trees were transplanted to the Arapahoe Avenue Underpass project at the east end of the Civic Area near Broadway and 13th Street. An additional tree located near the roadway was transplanted to a new location within Park East Park.

Tree work along Foothills Parkway also to occur

On Sept. 19, 2019, the City of Boulder Forestry Division in coordination with the Public Works Transportation Maintenance Division will remove three trees and prune 33 trees in the center median on Foothills Parkway between Table Mesa Drive and Baseline Road. The tree work is taking place to attain clearance over streets and mitigate safety issues. 

As with the underpass project, all four lanes of Foothills Parkway will remain open and be shifted to accommodate the tree crews and equipment. For more information about the City of Boulder’s Forestry Department, please visit  

No lane closures for tree work are anticipated; however, work along public street rights-of-way may require temporary lane realignment to accommodate the work.

For more information about the Foothills Parkway Bike and Pedestrian Underpass project visit

or contact Noreen Walsh at 303-441-4301.

Published: Sept. 17, 2019

Media Contacts:

Noreen Walsh, Senior Transportation Planner, 303-441-4301
Margo Aldrich, Communication Specialist, 303-441-3005

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