North I-25 Express Lanes: Johnstown to Fort Collins

The U.S. Department of Transportation USDOT has awarded CDOT and local partners a TIGER grant, assisting them in funding a $237 million expansion of North I-25.

Key project features will:

  • Increase capacity by adding an Express Lane in both directions, replace four aging bridges, and widen four additional bridges.
  • Improve multi-modal access to regional transit to promote mode shift.
  • Improve bus service performance and reduce each total trip time by 15 minutes by adding new bus slip ramps from I-25 to the new Park-n-Ride at Kendall Parkway.
  • Create new pedestrian, bicycle access under I-25 at Kendall Parkway.
  • Connect the Cache la Poudre River Regional Trail under I-25 and network to 100 miles of total trails. It will also serve as a wildlife corridor.

Express lanes provide travelers with more reliable, predictable travel times. Anyone can use Express Lanes. A solo driver in a passenger vehicle can use an express lane by paying a toll. A traveler can choose to travel for free with a motorcycle and as a carpooler with two passengers.

ExpressToll accounts are required for toll-free HOV travel. A traveler can also use the lane without cost via transit providers like Bustang.

Key Benefits
Express Lanes:

  • Reduce delay on most seriously congested corridors.
  • Use toll pricing to manage congestion.
  • Maintain reliable travel times now and in the future.
  • Promote transit and carpooling.

The addition of an Express Lane on the I-25 corridor does not mean that existing general purpose lanes will be tolled.

This project brings critically important benefits for the economy, the environment and quality of life by leveraging resources from partners across Northern Colorado. Benefits include:

  • safety improvements;
  • reducing accidents and fatalities;
  • reducing travel time and increasing trip reliability;
  • reducing emissions;
  • improving freight efficiency;
  • increasing travel choices;
  • reconstructing aging and obsolete infrastructure;
  • improving bike/pedestrian and transit connectivity; and
  • employing congestion management and safety technology to improve overall conditions.

This project is expected to begin construction in February 2018, ending in December 2020.

This project is supported by all of the communities and counties served by this corridor. They have contributed significant funds, totaling more than $25 million. The benefits this project brings in the near term were all key contributing factors to this broad support.

Support from Colorado's congressional delegation also was a key factor in implementation of this project.

What are Express Lanes?

Express Lanes increase roadway capacity and help manage congestion on Colorado highways by adding lanes that provide a new choice to drivers. Motorists can choose to ride the bus, carpool or pay a toll to use the new Express Lanes as an alternative to the free, general purpose lanes.

Project Work Area
North I 25 Work Details
Colorado: The Official State Web Portal