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 through this highly utilized corridor.

Underpass Image_color_modified637725969992582846

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:

  • Continuing to construct improvements at the underpass over the next several weeks.

Schedule And Traffic Impacts

  • Sheridan Boulevard between Turnpike Drive and U.S. Highway 36 will be shifting into a new configuration starting Friday, Feb. 10. All turn movements will be maintained at each intersection. Traffic configuration changes and lane closures will be announced on project message boards placed along the corridor.
  • Motorists can expect intermittent, short-term lane closures for asphalt patching and traffic signal head adjustments at various locations throughout the week.
  • Learn more about the new configuration here.

Anticipated construction activities and traffic impacts for the week of March 13, 2023 include:

  • There will be intermittent lane closures early next week on SB Sheridan Blvd. and EB US-36 exit ramp for traffic signal work.
  • The contractor will continue finalizing improvements at the underpass.

Anticipated construction activities and traffic impacts for the week of March 20, 2023 include:

  • All through lanes on Sheridan Blvd. are now open during daytime hours
  • The contractor will continue finalizing improvements at the underpass
  • The contractor will continue underground electrical work for new streetlights

All public inquiries should be referred to the project hotline (303-219-9033) or email (

All work is weather-dependent, and the schedule is subject to change. All the latest information is available at

Image of current construction phase on Sheridan underpass


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