I-70 in Denver | I-25 to Chambers Road

Lane closures on eastbound and westbound I-70 between Washington and Steele streets, the Brighton Boulevard on-ramp to eastbound I-70 and the Steele Street on-ramp to westbound I-70 overnight July 28 through July 31, 2025 from 8 p.m. to 5 a.m. These lane closures will allow crews to test the Fire Life Safety System and the Deluge Fire Suppression System inside the tunnel on I-70 between Clayton and Columbine streets. During this testing process, drivers in the area may see changes to the lane indicator lights, hear the public announcement system and may see the jet fans turn on.

I-70 in Denver Area Overview

Now that the Central 70 project is complete, the next phase of this project will include maintenance and operations of the Interstate 70 corridor in Denver.

The location of this area is on I-70 eastbound and westbound from Mile Points 274 to 283.50 from east of I-25 to Chambers Road in Denver and Adams counties.

Travel Impacts - Updated on July 10, 2025

As part of the annual inspections and testing of the Fire Life and Safety System and the Deluge Fire Suppression System in the I-70 tunnel between Clayton and Columbine streets, there will be lane closures on I-70, both eastbound and westbound between Steele and Washington streets. This work will occur overnight July 28 through July 31, from 8 p.m. to 5 a.m. and will require the following lane and ramp closures:

  • July 28 from 8 p.m. to 5 a.m. – Closures on eastbound I-70 between Washington and Steele streets
    • All lanes will be closed for 15 minutes at the top of every hour between 10 p.m. and 4 a.m.
    • Eastbound Express Lane
    • Eastbound left general purpose lane
    • Eastbound Brighton Boulevard on-ramp (Use 46th Avenue South to Colorado Boulevard on-ramp)
    • Eastbound left and center lanes will remain open
    • All lanes on westbound I-70 will remain open during this time
  • July 29 from 8 p.m. to 5 a.m. - Closures on eastbound I-70 between Washington and Steele streets
    • Eastbound Express Lane
    • Eastbound two right general purpose lanes
    • Eastbound Brighton Boulevard on-ramp (Use 46th Avenue South to Colorado Boulevard on-ramp)
    • Eastbound left and center lanes will remain open
    • All lanes on westbound I-70 will remain open during this time
  • July 30 from 8 p.m. to 5 a.m. - Closures on westbound I-70 between Colorado and Brighton boulevards
    • Westbound two Express Lanes
    • Westbound left general purpose lane
    • Westbound center and right lanes will remain open
    • All lanes on eastbound I-70 will remain open during this time
  • July 31 from 8 p.m. to 5 a.m. - Closures on westbound I-70 between Colorado and Brighton boulevards
    • All lanes will be closed for 15 minutes at the top of every hour between 10 p.m. and 4 a.m.
    • Westbound Steele Street on-ramp – (Use 46th Avenue North to southbound Fillmore Street to 46th Avenue South to Colorado Boulevard on-ramp)
    • Westbound left Express Lane
    • Westbound two right general purpose lanes
    • Westbound right Express Lane, left and center lanes will remain open
    • All lanes on eastbound I-70 will remain open during this time

Please be cautious when driving through this area. Go to COtrip.org for the latest information on lane closures and road conditions.

About the Contractor

For the next 30 years, contractor Kiewit Meridiam Partners is responsible for operations and maintenance of I-70, and will be completing the final turn-over requirements. Project priorities includes general maintenance like snow removal, lane striping, pot-hole repair, signage repair.

  • Project Cost: $400 million
  • Work Schedule: As needed
  • Traffic Impacts: Intermittent lane restrictions
  • Timeline: February 2023 to March 2052

Completed Central 70 Project on I-70 in Denver

Stay up to date on the latest information with cotrip.org

Lane Closures for I-70 in Denver