CO 119 Boulder Canyon down to one lane for emergency work for 3-5 days

Travel Advisory

January 11, 2021 - Northeastern Colorado - One-lane section is only 600 feet and will have flaggers to assist traffic

BOULDER — Colorado Highway 119 in Boulder Canyon will be reduced to one lane with alternating traffic for a short stretch due to loose rocks in the area. 

The one-lane stretch is near Mile Point 40 which was just outside the area that had been previously blasted for the project to permanently repair the road from the 2013 floods. 

Crews on the project identified the area and are working to secure the rock, which will take 3 to 5 days. Traffic will be diverted to a one-lane temporary road that was previously built for the construction that is farther away from the rock face. The one-lane section is only about 600 feet so delays will not be as long as they were previously during regular construction. 

Stay Informed

Travelers can obtain information about this closure and construction project by: 

 Text alerts: Text CO119 to 21000 to receive updates about this closure and project text alerts.

 Road conditions and travel information: 

 Sign up for project or travel alerts:

 See scheduled lane closures: 

 Connect with us on social media: Twitter @coloradodot and Facebook


Remember: Slow for the Cone Zone

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!

Whole System. Whole Safety. 

In early 2019, CDOT announced its Whole System — Whole Safety initiative to heighten safety awareness. This initiative 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.     


Safe transportation infrastructure is essential for emergency first responders and freight drivers as Colorado navigates the COVID-19 pandemic. With that in mind, construction continues on CDOT projects with social distancing and other measures to reduce COVID-19 exposure on the worksite. The Colorado Department of Public Health and the Environment has promulgated guidelines for construction activities. Gov. Polis announced an emergency, temporary stay-at-home order for all of Colorado, which went into effect Thursday March 26. With this order, the public is urged to #DoYourPartCO and avoid all nonessential travel. With fewer vehicles on the roads, CDOT crews will be able to work more efficiently and safely.