I-270 York Street Bridge Preventative Maintenance

Project completed

Project Recap

The Colorado Department of Transportation and contracting partner, Structures, Inc. successfully completed the necessary structural improvements under the York Street Bridge on Interstate 270 in Commerce City.

Shoring and catchment systems were installed on the bridge's underside to substantially improve its safety and stability until a full bridge replacement can be completed as part of the I-270 Corridor Improvements Project. Wooden decking and metal catchment systems were strategically mounted under areas of the bridge to prevent debris from falling beneath and onto I-270. These enhancements create a more stable driving surface, provide safety for I-270 motorists and help reduce emergency lane closures due to safety issues.

About the Project

Repairs began on the York Street Bridge over I-270 in Commerce City in December 2024.

Shoring and catchment systems will be installed on the underside of the bridge to significantly improve its safety and condition until a full bridge replacement can be completed as part of the I-270 Corridor Improvements project.

The project will mount a wooden decking system under areas of the bridge to prevent debris from falling beneath and onto I-270. This work will create a more stable driving surface on the York Street Bridge and help to prevent emergency lane closures due to safety issues. Work on this project is scheduled for completion by March 2025.

Project Facts

  • Construction Cost: $1 Million
  • Contractor: Structures, Inc.
  • Timeline: December 2024 to March 2025
  • Location: York Street Bridge over I-270
    • Nearest City: Commerce City
    • Mile Point(s): MP 0.39
    • County: Adams

Project Benefits

  • Reduce the need for frequent repairs
  • Improve the structural integrity
  • Update bridge safety standards
  • Improved driving surface

Work Schedule

  • Work is complete for this project.

Traffic Impacts

Motorists can expect the following impacts during the period of construction:

  • Overnight single-lane closures Sunday through Friday on eastbound and westbound I-270 under the York Street Bridge. The speed limit through the work zone will be 45 MPH
  • Occasional closures may be required at the westbound I-270/I-76 exit ramp to the I-76 interchange at York Street. The speed limit will be 55 MPH through the work zone. The following alternate routes can be used to access the I-76 interchange:
    • Eastbound I-76 detour: From westbound I-270, take the York Street exit and head north to 74th Avenue/CO 224, continue east on 74th Avenue to US 6/US 85, then proceed north on US 6/US 85 and merge onto the eastbound I-76 on-ramp
    • From westbound I-270, take the York Street exit and head north to 74th Avenue/CO 224, and then travel east on 74th Avenue to the westbound I-76 on-ramp
  • Delays on I-270 are expected to be up to 10 minutes during work hours
  • A 12-foot width restriction will be in place
  • Be aware of construction vehicles entering and exiting the work zone
  • For current road conditions, visit COtrip.org