CO 133 Rockfall Project to begin April 24

Travel Advisory

April 20, 2023 - Northwestern Colorado - Project work and traffic impacts will take place in Pitkin County

Pitkin County— The Colorado Department of Transportation will begin a rockfall mitigation project on April 24. Work will take place along Colorado Highway 133, south of the town of Redstone in Pitkin County. CDOT has selected Meridian Contracting as the prime contractor for the project. Travel impacts will begin the week of May 1. Motorists should plan for 20-minute delays through the duration of the project. In June, 60-minute holds will be necessary. Weekly updates will be provided and all real-time closure information will be posted to

The rockfall mitigation project will take place on CO 133 just north of the McClure Pass to North of Perham Creek Trailhead, Mile Points 48 to MP 59.

The project will help to protect the public and the roadway from falling rock. Work will primarily consist of rockfall mitigation at four sites along CO 133 between Crystal River Valley and Carbondale, in Pitkin County. Work will be done on northbound lanes for an eleven-mile stretch of CO 133. Rockfall mitigation has many important benefits including the elimination of loose material which decreases the potential of rockfall hazard for motorists traveling on the highway.

Traffic Impacts

Daytime work hours range from 7 a.m. to 7 p.m, Monday through Friday, with lane closures in place from 8:30 a.m. to 7 p.m. Motorists should plan for 20-minute delays due to single-lane, alternating traffic. The speed limit will be reduced to 40 MPH through the work zone. There will be a width restriction of 11 feet. 60-minute holds are anticipated in June. The project is expected to last until the end of October 2023.

Project limits for the Colorado Highway 133 rockfall mitigation project taking place in 2023.
Project limits for the CO 133 rockfall mitigation project taking place in 2023.

Project Information

For additional information about this project:

Know Before You Go

Travelers are urged to “know before you go.” Gather information about weather forecasts and anticipated travel impacts and current road conditions prior to hitting the road. CDOT resources include:

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!

Download the COtrip App!

The new FREE COtrip Planner mobile app was designed to meet the growing trend of information on mobile and tablet devices for the traveling public. The COtrip Planner app provides statewide, real-time traffic information, and works on mobile devices that operate on the iOS and Android platforms. Visit the Google Play Store (Android devices) or the Apple Store (iOS devices) to download!