Reconstruction of the CO 402 and I-25 interchange requires CDOT to close I-25 Sunday night for three hours

Aug. 23, 2019- Northeastern Colorado

LOVELAND  By the end of 2019, the I-25 and Colorado Highway 402 interchange will undergo substantial changes, resulting in a new and improved interchange. On Sunday, Aug. 25, crews will require a three-hour full closure of northbound and southbound I-25 at Colorado Highway 402 to place the deck on the new CO 402 bridge. 

I-25 will be have single lane closures beginning at 9 p.m. and full closure will be from roughly 12 a.m. to 3 a.m. with local detours until the deck pour is complete, at which time the full closure will be reduced back to single lane closures until 5 a.m.   

Detour Information

Northbound traffic will detour onto the CO 402 off-ramp (Exit 255), continue through the roundabout on the southeast Frontage Road and proceed onto the current northbound I-25 on-ramp at River Ranch Parkway. Southbound I-25 traffic will detour onto the CO 402 off-ramp (Exit 255) and turn south on County Road 7 to head east on County Road 48. 

CO 402 interchange reconstruction will improve the safety of the travelling public on I-25 by smoothing out the curve, both horizontal and vertical, add pedestrian and bike facilities to allow safe crossings of I-25, accommodate the continuing population growth in the Loveland and Johnstown area and modernize the aging infrastructure as part of the “Whole System – Whole Safety” initiative.

Project Information 

The I-25 North Express Lanes: Johnstown to Fort Collins Project will increase capacity by adding an Express Lane in both directions, constructing inside and outside shoulders, and replacing aging bridges. The project will also improve multimodal access to regional transit to promote mode shift, improve bus service performance by adding new bus slip ramps from I-25 to the new Park-n-Ride at Kendall Parkway, and improve interchanges at CO 402, Prospect Road and US 34.


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!



To heighten safety awareness, CDOT recently announced its Whole System — Whole Safety initiative. This project takes a systematic statewide approach to safety combining the benefits of CDOT’s programs that address driving behaviors, our built environment and the organization's operations. The goal is to improve the safety of Colorado’s transportation network by reducing the rate and severity of crashes and improving the safety of all transportation modes. The program has one simple mission—to get everyone home safely.



CDOT has approximately 3,000 employees located throughout Colorado and manages more than 23,000 lane miles of highway and 3,429 bridges. CDOT also manages grant partnerships with a range of other agencies, including metropolitan planning organizations, local governments and airports. It also administers Bustang, the state-owned and operated interregional express service. Gov. Polis has charged CDOT to further build on the state’s intermodal mobility options.