Traffic Impacts
Construction Activities & Impacts
Work for the week | August 23 to August 29
The speed limit on the project has been lowered to 65 mph. Please obey speed limit signs.
Lane closures for the week of August 23:
- Monday and Tuesday: Daytime single lane closures on I-25 E. Frontage Road, WCR 36 to WCR 38.
- Tuesday through Thursday: Overnight southbound I-25 off-ramp closures at WCR 48/CO 60.
- Wednesday: Overnight southbound I-25 right lane closure between WCR 48/CO 60 and LCR 14.
- Thursday: Overnight southbound I-25 on-ramp closure at WCR 48/CO 60.
- Thursday: Overnight southbound I-25 right lane closure between LCR 14 and WCR 46.
- Ongoing: Full closure of I-25 E. Frontage Road access to WCR 34.
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.
Monday and Tuesday, there will be daytime single lane closures of the I-25 E. Frontage Road between Weld County Road 36 and Weld County Road 38.
Monday and Thursday, 9 a.m. to 3 p.m., there will be a southbound I-25 right shoulder closure at Larimer County Road 14 to prepare for asphalt curb work.
Tuesday through Thursday, 9 p.m. to 5 a.m., the southbound I-25 off-ramp at Weld County Road 48/Colorado Highway 60 will be temporarily closed overnight to allow crews to install asphalt curbs and perform concrete panel maintenance.
- Detour: Continue south on I-25 to Colorado Highway 56 (exit 250), turn around and travel north to WCR 48/CO 60 (exit 252.)
Wednesday, 9 p.m. to 5 a.m., there will be an overnight southbound I-25 right lane closure between WCR 48/CO 60 and LCR 14 to install new asphalt curbs.
Thursday, 9 p.m. to 5 a.m., the southbound I-25 on-ramp at WCR 48/CO 60 will be temporarily closed overnight to install new asphalt curbs.
- Detour: Travel north to Larimer County Road 16 and the SE Frontage Road (exit 254), turn west on LCR 16 under I-25 into the roundabout, and enter southbound I-25.
Thursday, 9 p.m. to 5 a.m., there will be an overnight southbound I-25 right lane closure between LCR 14 and Weld County Road 46 to install new asphalt curbs.
There are no traffic impacts planned.
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.
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.
