Traffic Impacts

All work is weather dependent and will be rescheduled if operations cannot be completed.

Construction Activities & Impacts

Work for the week | August 16 to August 22

The speed limit on the project has been lowered to 65 mph. Please obey speed limit signs.

Lane closures for the week of August 16:

  • Saturday, Aug. 15: Northbound I-25 on- and off-ramp closures at WCR 34.
  • Monday and Tuesday: Overnight southbound I-25 right lane closure at WCR 46.
  • Wednesday and Thursday: Overnight northbound I-25 right lane closure between LCR 14 and MP 254.5.
  • Ongoing: Full closure of I-25 E. Frontage Road access to WCR 34.
Colorado Speed Enforcement Program — Civil penalties active in the I-25 North work zone between Mead and Berthoud

CDOT is now issuing $75 fines for speeding in the I-25 North work zone between Mead and Berthoud. Civil penalties began April 2, 2026, following a 30-day grace period during which speeding drivers were given warning notices.

Since the start of the program, excessive speeding in the I-25 North work zone has decreased by more than 93%. The Colorado Speed Enforcement Program aims to reduce excessive speeding in vulnerable areas such as work zones and school zones. Excessive speeding is a frequent cause of traffic crashes and fatalities in Colorado.

For more information about the program, please visit codot.gov/programs/speedenforcement.

Berthoud to Fort Collins

There are no traffic impacts planned.

Mead to Berthoud

Saturday, Aug. 15, 5 a.m. to 3 p.m., the northbound I-25 off-ramp at Weld County 34 will be temporarily closed to allow crews to finish paving and striping a temporary ramp that will be used as the project builds a new permanent off-ramp for the improved interchange. A detour will be in place:

  • Detour: Continue north on I-25 to Colorado Highway 56 (exit 250), turn around and travel south back to WCR 34 (exit 245.)

Saturday, Aug. 15, 9 a.m. to noon, the northbound I-25 on-ramp at WCR 34 will be temporarily closed to allow crews to locate utilities on the ramp. A detour will be in place:

  • Detour: Travel south to Colorado Highway 66 (exit 243), turn around and enter northbound I-25.

Monday and Tuesday, 9 a.m. to 3 p.m., there will be a southbound I-25 right shoulder closure at Weld County Road 46 (Mile Point 251) for asphalt curb installation.

Monday and Tuesday, 9 p.m. to 5 a.m., there will be an overnight southbound I-25 right lane closure at WCR 46 (MP 251) for asphalt curb installation.

Wednesday and Thursday, 9 a.m. to 3 p.m., there will be a northbound I-25 right shoulder closure between Larimer County Road 14 and Caliber Parkway (MP 253-254.5) for asphalt curb installation.

Wednesday and Thursday, 9 p.m. to 5 a.m., there will be an overnight northbound I-25 right lane closure between LCR 14 and Caliber Parkway (MP 253-254.5) for asphalt curb installation.

I-25 North Express Lanes Closure

Approximately one mile of the southbound I-25 Express Lane, between mile points 251 and 250, from approximately Weld County Road 44 to WCR 46, is closed through late 2027.

Graphic displaying how Approximately one mile of the southbound I-25 Express Lane, between mile points 251 and 250, from approximately Weld County Road 44 to Weld County Road 46, is closed through late 2027.

I-25 North Express Lanes: Tolling Active!

The I-25 North Express Lanes from Berthoud to Fort Collins are actively tolling. The Safety and Toll Enforcement Program will go into effect May 7, following the 30-day warning period.

Sophisticated roadside technology is used to enforce traffic violations. To avoid unnecessary fines, remember the following Express Lane rules:

  • Do not weave across the solid white lines (tickets for violations start at $75 each).
  • Enter and exit the Express Lanes through the dashed lines only.
  • Obey posted speed limits. The Express Lanes cannot be used to pass slower moving vehicles.

For future project updates and information, please check the Express Lanes website and COTrip.org.