I-25 southbound Express Lane closure between Johnstown and Berthoud planned through late 2027

Travel Advisory

Nov. 15, 2024 - Northeastern Colorado - Southbound lanes shifted to new ongoing alignment for I-25 improvements

Weld County — The Colorado Department of Transportation will close the southbound I-25 Express Lane between Colorado Highway 60 and Colorado Highway 56 starting Friday, Nov. 22, at 9 p.m. This will be in place through late 2027.

This closure will allow crews to perform work needed during the various phases of the I-25 North Express Lanes, Mead to Berthoud project. Work includes concrete paving in both directions of I-25, reconstructing the I-25 interchange at Weld County Road 34, as well as five other bridges, and adding one 12-foot Express Lane in each direction from CO 66 to CO 56.

To implement this Express Lane closure, the southbound I-25 on-ramp at CO 56 (Berthoud) will be closed overnight on Friday, Nov. 22, 9 p.m. to 5 a.m., for a traffic switch. Crews will stripe lanes, move barriers and switch traffic onto new lanes. Motorists should follow posted detour signage in the area and plan for 10 to 15 minute delays during this time.

A detour will be in place:

  • Traffic on CO 56 intending to travel south will turn north to Colorado Highway 60/Weld County Road 48 (exit 252), turn around and enter southbound I-25.

Following this traffic switch, southbound I-25 traffic will then be shifted to the northbound I-25 lanes into a head-to-head configuration between CO 56 and CO 66 starting Sunday, Nov. 24, at 9 p.m. This configuration will be in place through late 2025. The closure of the southbound I-25 lanes will increase safety for work crews and the traveling public and will allow work to proceed faster and more efficiently. The overall effect will decrease the duration of traffic impacts.

The new I-25 configuration will require a traffic switch and overnight closures of the southbound I-25 on- and off-ramps at WCR 34 near Mead on Sunday, Nov. 24, 9 p.m. to 5 a.m. Crews will stripe lanes, move barriers and switch traffic into the new ongoing alignment. Motorists should plan for delays.

Detours will be in place:

  • Traffic exiting I-25 at Mead will continue south to CO 66, turn around and travel north to exit 245.
  • Traffic on WCR 34 intending to travel south will turn north to CO 56/Weld County Road 44 (exit 250), turn around and enter southbound I-25.

Travel impacts:

Motorists can expect the following impacts:

Southbound I-25 on-ramp closure at CO 56, Friday, Nov. 22, 9 p.m. to 5 a.m.

  • A detour will be in place: Traffic on CO 56 intending to travel south will turn north to CO 60/WCR 48 (exit 252), turn around and enter southbound I-25

Southbound I-25 traffic switch and closures of the southbound I-25 on- and off-ramps at WCR 34, Sunday, Nov. 24, 9 p.m. to 5 a.m.

  • Detours will be in place: Traffic exiting I-25 at Mead will continue south to Colorado Highway 66, turn around and travel north to exit 245. Traffic on WCR 34 intending to travel south will turn north to Colorado Highway 56/Weld County Road 44 (exit 250), turn around and enter southbound I-25

Plan ahead and allow for 10 to 15 minute delays. Construction is weather-dependent and subject to change.

Please visit www.codot.gov/projects/north-i-25, for the most current travel updates. The I-25 North Express Lanes Project: Mead to Berthoud section is a continuation of the approximately 20 miles of improvements that have been completed on I-25 between Berthoud to Fort Collins over the past six years. This approximately 6-mile project will expand and enhance I-25, from Colorado Highway 66 in Mead and connect to the newly built portion of I-25 just south of CO 56 in Berthoud. Once complete in 2028, this project will complete a major missing puzzle piece on I-25 and will be the first time there will be more than two lanes of I-25 from Denver to Fort Collins in both directions.

Stay informed:

For additional information about this project, contact the project team.

  • Project phone line: 720-593-1996
  • Project email: [email protected]
  • Project website: www.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 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!

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