Upcoming closures on I-25 North Express Lanes Project

Travel Advisory

May 25, 2022 - Northeastern Colorado

Larimer County — From May 26 to June 11, the I-25 North Express Lanes Project will require multiple traffic impacts and temporary closures from Berthoud to Fort Collins, as the project completes important milestones. Construction is weather-dependent and subject to change.

  • A traffic switch is planned for May 26, 9 p.m. to 5 a.m., at Colorado Highway 60 between Mile Points 251-252. The southbound I-25 on- and off-ramps will be closed at CO 60 to relocate barriers and switch traffic onto the new ramps as well as install new lighting. Please follow posted signage in the area for detours.
  • On May 26, 9 p.m. to 5 a.m., there will be a full closure of Larimer County Road 16 below I-25 to allow construction crews to install new bridge girders on I-25.
    • Westbound LCR 16 traffic will take the eastern Frontage Road north to Colorado Highway 402.
    • Eastbound LCR 16 traffic will take the western Frontage Road south to Larimer County Road 14.
  • Full closure of eastbound US 34 over I-25 and left turn movements from the northbound and southbound I-25 off-ramps will take place from 9 p.m., June 3, until 5 a.m., June 6.
    • Eastbound US 34 will take southbound I-25 to Exit 255/Colorado Highway 402, turn left and continue back onto northbound I-25 to Exit 257/ U 34 and continue eastbound on US 34.
    • Westbound US 34 traffic from the northbound I-25 off-ramp will go east on US 34 to Centerra Parkway, turn left and continue north to Crossroads Boulevard. Turn left and continue onto southbound I-25 to Exit 279/US 34 and continue westbound on US 34.
  • Full closures of northbound I-25 from Harmony Road to Prospect Road will take place from 9 p.m., June 8, until 5 a.m., June 9.
    • Northbound I-25 traffic will use Exit 265/Harmony Road turn right and continue east to Colorado Highway 257. Turn left and continue north to Mulberry Street. Turn left and proceed west to the northbound I-25 on-ramp.
  • On Thursday, June 9, 5 a.m. to noon, there will be a full closure of LCR 16 below I-25 to allow crews to pour concrete for a new bridge deck.
    • Westbound LCR 16 traffic will take the eastern Frontage Road north to CO 402.
    • Eastbound LCR 16 traffic will take the western Frontage Road south to LCR 14.
  • Full closures of the eastbound US 34 on-ramp to northbound I-25 will take place from 7 p.m., June 10, until noon, June 11.
    • Eastbound US 34 to northbound I-25 traffic will continue east on US 34 to Centerra Parkway, turn left and continue north to Crossroads Boulevard. Turn left and continue onto northbound I-25.
  • Full closures of I-25 under US 34 and US 34 over I-25 will take place from 9 p.m., June 10, until 9 a.m., June 11.
    • I-25 traffic will be detoured up and over I-25 using Exit 257/ US 34.
    • Westbound US 34 traffic will be detoured north on I-25 to Exit 259/ Crossroads Boulevard. Turn left on Crossroads Boulevard and then continue south on I-25 to Exit 257/ US 34.
    • Eastbound US 34 traffic will be detoured south on I-25 to Exit 255/ Colorado Highway 402. Turn left on CO 402 and continue north on I-25 to Exit 257/ US 34.

North Express Lanes Fort Collins to Berthoud project map


Please visit www.codot.gov/projects/north-i-25, for the most current travel updates. The I-25 North Express Lanes Project: Berthoud to Johnstown section, as well as the Johnstown to Fort Collins section, will increase highway capacity by adding an Express Lane in each direction, rebuild interchanges, replace aging bridges, straighten highway curves to improve safety, make major utility and drainage improvements, and add carpool and transit facilities. During construction on the I-25 North Express Lanes Project, motorists should expect speed reductions to 65 mph, minor lane shifts, temporary concrete barriers and median bridge work. Motorists should also expect delays during the scheduled work hours. Construction on the Berthoud to Johnstown segment is expected to be complete in early 2024.

Project Contact Information

  • Project phone line - (720) 593-1996
  • Project email – [email protected]
  • Project web site - codot.gov/projects/north-i-25
  • Sign up for weekly project updates by logging onto the project web site and filling out the right-side form to “Subscribe to Project Updates.”

Know Before You Go

Travelers are urged to “know before you go.” Gather information about weather forecasts, 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!