NEWS RELEASE
COLORADO DEPARTMENT OF TRANSPORTATION
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Berthoud to Johnstown
Monday through Friday, 7 a.m. to 5 p.m., Weld County Road 46 under I-25 will be reduced to one lane of alternating eastbound and westbound traffic, controlled by flaggers for painting operations.
Monday through Friday, 7 a.m. to 5 p.m., Larimer County Road 14 under I-25 will be reduced to one lane of alternating eastbound and westbound traffic, controlled by flaggers for painting operations.
The following full closures will be in place through July 11:
- Eastbound and westbound Larimer County Road 16 under I-25
- Southbound I-25 off-ramp to LCR 16 (exit 254)
- Western Frontage Road (County Road 5) south of LCR 16
These closures are required for crews to complete construction of the new roadway, improved ramps and a new roundabout. Access to local businesses will be maintained. Please follow posted detour signage.
- Southbound I-25 traffic to eastbound LCR 16 will continue south to Colorado Highway 60, re-enter I-25 northbound to exit 254, turn north on the SE Frontage Road and turn east onto LCR 16.
- Southbound I-25 traffic to westbound LCR 16 will exit at Colorado Highway 402, turn west onto CO 402, turn south onto County Road 7 and turn west onto LCR 16.
- Eastbound LCR 16 traffic to I-25 will travel south on CR 7, turn east onto CO 60 and enter I-25.
- Eastbound LCR 16 traffic will travel south on CR 7, turn east onto Larimer County Road 14, turn north onto the SE Frontage Road and turn east onto LCR 16.
- Westbound LCR 16 traffic will travel south on the SE Frontage Road, turn west onto LCR 14, turn north onto CR 7 and turn west onto LCR 16.

Johnstown to Fort Collins
To safely pave the new permanent concrete on-ramp, a weekend full closure on the southbound I-25 on-ramp from eastbound US Highway 34 will take place from 7 p.m., Friday, through 5 a.m., Monday.
Southbound I-25 on-ramp traffic will go north on I-25 to Exit 259/Crossroads Boulevard. Traffic will exit, turn left and continue onto southbound I-25. To tie in the new ramp, single lane closures will take place on southbound I-25 at US 34 from 9 p.m., Sunday, through 5 a.m., Monday.
To install overhead sign structures, various lane and ramp closures will be required on US 34 and I-25. Full closure of the northbound I-25 off-ramp to US 34 will take place from 9 p.m., Monday, until 5 a.m., Tuesday.
Northbound I-25 off-ramp traffic will continue north on I-25 to Exit 259/Crossroads Boulevard. Traffic will exit, turn left and continue onto southbound I-25 to Exit 257/US 34. Full closure of the northbound I-25 on-ramp from eastbound US 34 will take place from 9 p.m., Tuesday, until 5 a.m., Wednesday.
Eastbound US 34 to northbound I-25 traffic will go south on I-25 to Exit 255/Colorado Highway 402, turn left and continue onto northbound I-25. Full closure of the southbound I-25 on-ramp from westbound US 34 will take place from 9 p.m., Wednesday, until 5 a.m., Thursday.
Southbound I-25 on-ramp traffic will go north on I-25 to Exit 259/Crossroads Boulevard and turn left. Continue west to the southbound I-25 on-ramp. Single lane closures on the southbound I-25 off-ramp to US 34 will take place from 9 p.m. Thursday, until 5 a.m., Friday.
Full closure of the southbound I-25 off-ramp to US 34 and single lane closures on US 34 between Rocky Mountain Avenue to I-25 will take place from 9 p.m., Friday, through 5 a.m., Saturday.
Southbound I-25 off-ramp traffic will continue south on I-25 to Exit 255/ CO 402 and turn left. Continue east to the northbound I-25 on-ramp to Exit 257/US 34.
To shift traffic into the final phase of construction between Harmony Road and Mulberry Street, various closures are required. A full closure of the southbound I-25 off-ramp to Prospect Road will take place from 9 p.m., Sunday, through 5 a.m., Monday.
Southbound I-25 off-ramp traffic will go south on I-25 to Exit 265/ Harmony Road and turn left. Continue back onto northbound I-25 to Exit 268/ Prospect Road. Single lane closures on I-25 at Prospect Road will take place from 9 p.m., Tuesday, until 5 a.m., Wednesday.
A full closure of northbound I-25 at Harmony Road and a full closure of the northbound I-25 on-ramp from Prospect Road will take place from 9 p.m., Wednesday, until 5 a.m., Thursday. If needed, 9 p.m., Thursday, until 5 a.m., Friday.
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.
Northbound I-25 on-ramp traffic will go south on I-25 to Exit 265/ Harmony Road and join the northbound I-25 detour.
To remove and replace the East Frontage Road bridge over Hillsboro Tributary, crews fully closed the East Frontage Road between CO 402/County Road 18 and County Road 16. This closure will be in place until May 26.
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 and go north on I-25.
Firestone Mobility Hub
Southbound West Frontage Road/I-25 On-Ramp at Exit 240
- Left lane is closed 24/7 through August 2023
- Construction crews will be working behind the barrier on the left shoulder
- Flaggers will assist motorists through the construction work zone
- Caution - Trucks will be entering and exiting the work zone
Northbound I-25 Off-Ramp at Exit 240
- Construction crews will be working behind the barrier on the right shoulder
- Caution - Trucks will be entering and exiting the work zone
Northbound East I-25 Frontage Road
- Right turn onto CO 119 will be closed until Summer 2023
- Detour - Motorists will continue north on E I-25 Frontage Rd. past Firestone Blvd./CO 119, right onto Union St., right on Arbor St., left on Firestone Blvd./CO 119
- Construction crews will be working behind the barrier on the right shoulder
Flaggers will assist motorists through the construction.
Additional Information
For specific lane closures and traffic impacts from Sunday, May 14 - Saturday, May 20, please use this interactive map on the project webpage. To display full details on the traffic impacts, please click on any of the color-shaded areas on the map to see the full details. A pop-up on the left side of your screen will outline the details of the lane closures.
Construction activities are weather-dependent and subject to change. Please watch for construction vehicles entering and exiting mainline I-25 and obey all posted signage in construction zones. Your safety and the safety of our crews is our highest priority.
The I-25 North Express Lanes Project provides a Courtesy Patrol during commute hours (6 to 9 a.m. and 3:30 to 6:30 p.m.) to assist with disabled vehicles within the Project limits from Johnstown to Fort Collins.
About the Project
Communities along the I-25 North corridor are expanding rapidly, contributing to major economic growth in northern Colorado. The Colorado Department of Transportation is supporting this growth by delivering the expansion of I-25 North. Improvements are currently underway along I-25 between Berthoud and Fort Collins (with more to come from Mead to Berthoud).
This project brings economic, environmental and quality of life benefits for northern Coloradans by:
- Making safety improvements to reduce the number of crashes and fatalities.
- Decreasing travel time and increasing trip reliability.
- Reducing emissions and improving freight efficiency.
- Improve congestion and safety.
- Rebuilding aging and obsolete infrastructure.
- Improving bicycle, pedestrian and transit connectivity.
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