I-25 North Express Lanes: Mead to Fort Collins - old version

View Traffic Impacts for the I-25 North Express Lanes
Project for the week of April 30

About the Project

Communities along the I-25 North corridor are expanding rapidly, contributing to major economic growth in northern Colorado. The Colorado Department of Transportation is supporting this growth by delivering the expansion of I-25 North. Improvements are currently underway along I-25 between Berthoud and Fort Collins (with more to come from Mead to Berthoud), including:

  • Construction of northbound and southbound Express Lanes with HOV option from CO 56 to just past Prospect Road.
  • New interchange construction with lengthened bridges to accommodate additional I-25 lanes at Prospect Road, US 34, CO 402, CO 60, CO 56, and Weld County Road 34.
  • Reconstruction of the Great Western Railroad bridges, bridges over the Cache la Poudre river, Hillsboro Frontage Road bridge, Little Thompson River bridges, Big Thompson River bridges, and Larimer County Road 20.
  • Reconstruction of the Port of Entry 2,000 feet south of current location for improved interstate operations.
  • Operational improvements of on– and off-ramps at Harmony Road.
  • Replacement of the Kechter Road bridge and elevation of the I-25 crossing at Kechter to rebuild to city standards.
  • New mobility hub with center lane bus slip ramps for Bustang, expanded Park-n-Ride lot, and creation of a new pedestrian and bicycle access under I-25 at Kendall Parkway.
  • Frontage Road improvements at CO 402 and CO 56, addition of roundabouts, and relocation and widening of the current Park-n-Rides.

Map showing segments on I-25 North


Construction for the I-25 North Express Lanes began in September 2018.

Berthoud to Johnstown:
Construction between CO 56 to CO 402 began in the fall of 2019 and will be complete in 2024. Construction will begin between CO 66 and CO 56 in the near future.

Johnstown to Fort Collins:
Work between Johnstown and Fort Collins will continue through 2023.


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.

Additional Resources

Learn more about the corridor improvements by clicking on the areas below: