Projects

I-25 North Express Lanes: Johnstown to Fort Collins

  • From 9 p.m. Monday, Dec. 10 through 5 a.m. Tuesday, Dec. 11, crews will close the southbound I-25 off-ramp to CO 392 to shift southbound traffic to the west just before CO 392. To detour:
    1. Continue south on I-25 to the East Crossroads Boulevard exit.
    2. Head east under the highway to the northbound I-25 on-ramp.
    3. Head north on I-25 to the CO 392 off-ramp.


  • From 9 p.m. Tuesday, Dec. 11 through 5 a.m. Wednesday, Dec. 12, crews will close the northbound I-25 on-ramp from CO 392 to shift northbound I-25 traffic to the east, just north of CO 392. To detour:
    1. Head east of the on-ramp on CO 392 to County Road 5.
    2. Head north to East Harmony Road.
    3. Go west on East Harmony Road to the northbound I-25 on-ramp.


  • From 9 p.m. Wednesday, Dec. 12 through 5 a.m. Thursday, Dec. 13, crews will close the northbound I-25 off-ramp to CO 402, and the northbound I-25 on-ramp from CO 402 to shift northbound traffic onto the new temporary pavement just south of CO 402 to US 34.
    For the northbound off-ramp detour:
    1. Continue north on I-25 to the US 34 off-ramp.
    2. Head west on US 34 to the southbound I-25 on-ramp.
    3. Head south on I-25 to the CO 402 off-ramp.
    For the northbound on-ramp closure:
    1. Head east of the on-ramp on CO 402 to the Southeast Frontage Road.
    2. Head north to Ronald Reagan Boulevard.
    3. Head east on Ronald Reagan Boulevard to Thompson Parkway.
    4. Head north to US 34.
    5. Head west on US 34 to the northbound I-25 on-ramp.

Drivers will notice a difference when driving along I-25 Thursday morning, and when using the on-and off-ramps at CO 402.

Gov. John Hickenlooper broke ground on the I-25 North Express Lanes project Monday, Sept. 10. He was joined by Sen. Michael Bennet and many local, state and federal officials who helped make this project a reality.

Project Facts

  • Cost: $300+ million
    The U.S. Department of Transportation (USDOT) has awarded CDOT and local partners a TIGER grant to help it fund this expansion of I-25 North.
  • Contractor: Kramer and IHC Construction Companies, LLC
  • Timeline:
    • First Notice to Proceed: Early 2018
    • Second Notice to Proceed: Summer 2018
    • Construction: Fall 2018 through fall 2019
    • Construction Complete/Toll Commencement: Early 2022

In mid-October, crews began construction near CO 402. There will be three main phases of work in this area that will continue through mid-2020:

  • Phase 1 will allow crews to build temporary infrastructure on the southbound side of I-25.

  • Phase 2 will push northbound traffic onto the southbound side to provide access to build infrastructure on the northbound side.

  • Phase 3 will switch northbound and southbound traffic onto the northbound side to allow crews to build the required infrastructure on the southbound side.

What to Expect

  • While most of the work will be performed outside the roadway, some nighttime lane closures will be required. CDOT will send advance notification of these closures.
  • Current work between Crossroads Boulevard and Kechter Road, near CO 392, will continue during construction at CO 402.

Coming Up....

  • In late summer 2019, crews will close CO 402 between the I-25 ramps. Watch for more details in spring 2019.
  • Once the project is complete, CO 402 will run over I-25.
  • Increase capacity by adding an Express Lane in both directions, replacing four aging bridges and widening 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.

This project brings critically important benefits to 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.

Local partners and elected officials have been heavily involved in the planning, implementation and funding of this critically important project.

In 2013, an I-25 Coalition was formed to help manage and accelerate improvements to the corridor. Six northern Colorado communities, Weld and Larimer counties, CDOT, chambers of commerce and private businesses have all been collaborating to help bring these improvements to fruition.

The I-25 Coalition has grown steadily and is currently made up of 90 representatives from Adams, Larimer and Weld counties, Berthoud, Broomfield, Dacono, Erie, Firestone, Fort Collins, Frederick, Johnstown, Loveland, Mead, Northglenn, Timnath, Thornton and Windsor, as well as CDOT, businesses and other interested agencies.

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