I-25 North Express Lanes - Mead to Berthoud

About the Project:

This project on the I-25 North corridor is a continuation of the approximately 20 miles of improvements that have been completed on I-25 between Berthoud to Fort Collins over the past six years. This approximately six-mile project will expand and enhance I-25, from Colorado Highway 66 in Mead and connect to the newly built portion of I-25 just south of CO 56 in Berthoud.

Once complete in 2028, this project will complete a major missing puzzle piece on I-25 and will be the first time there will be more than two lanes of I-25 from Denver to Fort Collins in both directions.

Improvements include:

  • Widen the inside roadway shoulder to 10 feet and the outside roadway shoulder to 12 feet
  • Fully reconstruct the I-25 and Weld County Road 34 interchange
  • Fully reconstruct bridges along this section of I-25, including:
    • Weld County Road 32
    • Weld County Road 34
    • I-25 over Great Western Railway
    • Weld County Road 38
    • I-25 over Valley Road
  • Reconstruct I-25 to add one 12-foot Express Lane in each direction from CO 66 to just south of CO 56 with a four-foot painted buffer separating the tolled Express Lane from the general purpose travel lanes
  • Install and integrate tolling and Intelligent Transportation Systems equipment

 Traffic Impacts for the I-25 North Express Lanes Project for the week of December 22

Work this Week & Lane Closures I-25 North Express Lanes


Project Facts

  • Construction Cost: $415 Million
  • Contractor: Ralph L Wadsworth Construction/Sema Construction
  • Timeline: 2024 to 2028
  • Location: I-25 
    • Nearest Town/City: Mead to Berthoud
    • Mile Point(s): MP 243 to 250
    • County: Weld 
Project map depicting the Segment 5 construction area. Text overlay reads, "Replace bridge (valley road), replace bridge, replace bridge, Reconstruction of interchange and replace bridge."
Project map depicting the Segment 5 construction area. Projects include replace bridge (valley road), replace bridge, replace bridge, Reconstruction of interchange and replace bridge.

Construction starting on I-25 North Express Lanes, Mead to Berthoud

Crews began construction of the I-25 North Express Lanes, Mead to Berthoud, as of Sunday, May 12, 2024.

The project team has recorded a presentation video with general project information, including schedule, scope, travel impacts, ways to connect with the project and more!

Community members are encouraged to watch the presentation video and submit any feedback or questions to the project team at [email protected].

Project Benefits

This project brings economic, environmental and quality of life benefits for northern Coloradans by:

  • Making safety improvements to reduce the number of crashes and fatalities
  • Decreasing travel time and increasing trip reliability
  • Reducing emissions and improving freight efficiency
  • Improve congestion and safety
  • Rebuilding aging and obsolete infrastructure
  • Improving bicycle, pedestrian and transit connectivity

Work Schedule:

  • General hours of operation are from 7 a.m. to 7 p.m., Monday through Friday, as well as some weekend shifts
  • Some overnight and weekend work will be scheduled intermittently throughout the project
  • Construction activities and impacts are weather-dependent and subject to change

Traffic Impacts:

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

  • Visit our Traffic Impacts page for updated travel information
  • Refer to COtrip.org or download the COtrip Planner app for real-time travel conditions and road closures