I-25 Frontage Road near Fort Collins to close Feb. 3 through March

Travel Advisory

January 24, 2020 - Northeastern Colorado - Construction of an irrigation box culvert will require CDOT to close the southwest Frontage Road from County Road 30 to Rockwell Avenue

FORT COLLINS – The I-25 North Express Lanes Project team will close the Southwest Frontage Road from East County Road 30 to Rockwell Avenue to complete the irrigation box culvert across the road prior to the start of irrigation season. 

The area to be closed is south of Fort Collins and north of the Northern Colorado Regional Airport.

The closure will begin Feb. 3 and continue until the end of March. Traffic will detour west on East County Road 30 to County Road 9 to Colorado Highway 392. Take CO 392 to southbound I-25 and exit onto Crossroads Boulevard. Turn right onto Byrd Drive and continue to the Southwest Frontage Road.


The I-25 North Express Lanes: Johnstown to Fort Collins Project will increase capacity by adding an Express Lane in both directions, replacing aging bridges at four locations and widening two additional 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, create new pedestrian and bicycle access under I-25 at Kendall Parkway and construct new bridges over the Cache la Poudre River, allowing for the future completion of the regional trail. The project is expected to be completed in 2021.


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. 

For additional information about this project, call the project information line at 720-593-1996, email the team at [email protected], or visit the project website and sign up for updates at https://www.codot.gov/projects/north-i-25/johnstown-to-fort-collins/johnstown-fort-collins. For information on travel conditions, visit COTrip.org, or call 511. Updates are also available via Twitter @coloradodot and CDOT’s Facebook page at Facebook.com/coloradodot.

For information about the I-25 Express Lanes Project: 120th to Northwest Parkway/E470 please visit 

https://www.codot.gov/projects/north-i-25/NorthI-25/120thNorth or https://www.cotrip.org/home.htm.