I-25 East Frontage Road near Johnstown to close for bridge replacement Feb. 27 to May 26

Travel Advisory

February 23, 2023 - Northeastern Colorado - Crews will remove and replace the East Frontage Road bridge over Hillsboro Tributary between Colorado Highway 402/County Road 18 and County Road 16

Johnstown – As the Colorado Department of Transportation progresses on I-25 widening, drainage improvements and bridge replacements, crews will remove and replace the East Frontage Road bridge over Hillsboro Tributary between Colorado Highway 402/County Road 18 and County Road 16 as part of the 100-year flood prevention portion of this project.

To safely remove and reconstruct the bridge, a full closure of the East Frontage Road from CO 402/County Road 18 to County Road 16 will take place from Feb. 27 to May 26.

When complete, the I-25 project will increase capacity on I-25 by adding an Express Lane in both directions, constructing inside and outside shoulders and replacing other aging bridges. The project will also improve multimodal access to regional transit throughout the corridor.

I-25 East Frontage Road near Johnstown Road Closure map

Travel Impacts

Full closure of the East Frontage Road from CO 402/County Road 18 to County Road 16 will take place from 6 a.m., Feb. 27, until the afternoon of May 26. Access to local residences and businesses will be maintained. I-25 traffic will not be impacted during bridge installation.

  • Southbound East Frontage Road traffic will detour south on I-25 to Exit 254/ Campion.
  • Northbound East Frontage Road traffic will detour south on East Frontage Road to County Road 14 and go east. Continue to High Plains Boulevard and turn south. Turn west on Colorado Highway 60 then go north on I-25.

Stay Informed

More information about this project is available at:

  • The project web site: www.codot.gov/projects/ north-i-25/johnstown-to-fort-collins
  • Project information hotline: 720-593-1996
  • Email the project team: [email protected]

Know Before You Go

Travelers are urged to “know before you go.” Gather information about weather forecasts and anticipated travel impacts and current road conditions prior to hitting the road. CDOT resources include:

Remember: Slow For The Cone Zone

The following tips are to help you stay safe while traveling through maintenance and construction work zones.

  • Do not speed in work zones. Obey the posted speed limits.
  • Stay Alert! Expect the unexpected.
  • Watch for workers. Drive with caution.
  • Don't change lanes unnecessarily.
  • Avoid using mobile devices such as phones while driving in work zones.
  • Turn on headlights so that workers and other drivers can see you.
  • Be especially alert at night while driving in work zones.
  • Expect delays, especially during peak travel times.
  • Allow ample space between you and the car in front of you.
  • Anticipate lane shifts and merge when directed to do so.
  • Be patient!

Download the COtrip App!

The new FREE COtrip Planner mobile app was designed to meet the growing trend of information on mobile and tablet devices for the traveling public. The COtrip Planner app provides statewide, real-time traffic information, and works on mobile devices that operate on the iOS and Android platforms. Visit the Google Play Store (Android devices) or the Apple Store (iOS devices) to download!