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:

  • Construction on the eastern half of the U.S. 36 bikeway underpass is now underway. Construction of the eastern half of the underpass will continue through early 2023.
  • Roadway prep and paving along northbound Sheridan Boulevard adjacent to the RTD station.
  • Various intersection improvements will continue at the 88th Avenue intersection.
  • Roadway removals, prep, and paving at the southwest corner of the US 36 exit ramp and Sheridan Boulevard will occur over the next several weeks.

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.

Anticipated construction activities and traffic impacts for the week of November 28, 2022

  • The project will reach a major milestone this week. Prefabricated concrete arches will be placed at the eastern half of the underpass on Wednesday, November 30. The arches create the roof of the new U.S.-36 Bikeway underpass. The contractor placed arches for the western half of the underpass in July.
  • Two lanes will remain open in each direction on Sheridan Boulevard during arch placement on Nov. 30. Heavy truck traffic and flagging operations are expected. Drivers should anticipate minor traffic delays. All work is weather dependent, and the schedule is subject to change.

Westminster Phase 2_8-16-2022 FOR REVIEW[19463]

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

photo credit

Christopher Chase Edmunds