The Sheridan Underpass – also known as the Sheridan Boulevard Multimodal Transportation Improvement (MTI) Project – is a federal-aid transportation project with oversight from the Colorado Department of Transportation (CDOT). It provides improvements for all modes of transportation for this highly-utilized corridor.

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Project Includes

  • Map of new bikeway underpassInstallation of a pre-cast concrete arch underpass (42' wide by 14' tall)
  • A new U.S. 36 bikeway underpass connecting Downtown Westminster to the RTD U.S. 36 & Sheridan Station parking lot near Sheridan Boulevard and 88th Avenue 
  • New traffic signals at the West 88th Avenue and Sheridan Boulevard intersection
  • Widening Sheridan Boulevard to a six-lane facility, from Turnpike Drive to West 88th Place
  • Patterned concrete medians
  • Street and pedestrian lights
  • ADA ramps
  • Storm sewer drainage improvements

Multiple projects have created traffic impacts at Sheridan Boulevard and West 88th Avenue over the past few years. The Sheridan Boulevard MTI project will work to mitigate traffic impacts as much as possible.


Construction began in November 2021 and is expected to be completed in 2023.

Current Work

Current work includes:

  • Starting the week of January 3 rd, expect lane closures and intersection modifications at the Sheridan Boulevard/W. 88 th Ave. intersection.
  • Starting mid-January, construction will begin on the western half of the U.S. 36 bikeway underpass.
  • Intersection work at Sheridan Boulevard/eastbound U.S. 36 off-ramp
  • Grading activities and utility relocation on the west side of Sheridan Boulevard

Schedule and Traffic Impacts

Construction activities will be phased to minimize traffic impacts. Traffic configuration changes and lane closures will be announced on project message boards placed along the corridor.

Starting the week of January 3rd, Sheridan Boulevard between Turnpike Drive and the eastbound U.S. 36 ramps will be in a temporary lane configuration through summer 2022. Northbound Sheridan Boulevard will be reduced to two through lanes approaching U.S. 36 and the southbound lanes of Sheridan Boulevard will shift east in order to construct improvements at the Sheridan Boulevard/W. 88 th Avenue intersection as well as the western half of the bikeway underpass. Two lanes will remain open in each direction on Sheridan Boulevard during the phased underpass construction . View the construction phasing map.

Temporary eastbound U.S. 36 off-ramp lane closures at Sheridan Boulevard are currently in place for several months.

  • Drivers exiting eastbound U.S. 36 will notice a temporary lane configuration approaching the intersection.
  • The right-turn lane from eastbound U.S. 36 is now closed.
  • The ramp is open and all turn movements at the intersection are still possible.
  • Some delay is possible during peak travel times.

All work is weather-dependent, and the schedule is subject to change. Project completion is anticipated in early 2023.

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U.S. 36 Bikeway Detour

The U.S. 36 Bikeway is currently closed between West 92nd Avenue and West 88th Avenue to accommodate construction. A local detour is in place for the duration of construction through early 2023.  View the detour.


The City of Westminster applied for and accepted $5.6 million in Denver Regional Council of Governments (DRCOG) and state grant funding and an additional $1 million in CDOT contribution for the Sheridan Boulevard MTI project. The total project cost is estimated to be $12 million.

Contact Information

The project has set up the following resources allowing the public to communicate with the project team:

Text: SHERIDAN to 21000 for travel alerts


Hotline: (303) 219-9033