CO 133 Rockfall Project North of McClure Pass to South of Carbondale

About the Project:

This project consists of Rockfall Mitigation at multiple sites along CO 133, between McClure Pass summit and Carbondale, in Pitkin County. Rockfall Mitigation will include rock scaling and stabilization, rock and unclassified excavation, rockfall wire mesh installation, and a debris flow fence. This project also includes erosion control, traffic control, and localized highway repair.

Project Benefits

  • Elimination of loose material
  • Decreases the potential of rockfall hazard for motorists traveling on the highway.
  • Help to protect the public and structures from falling rock.

Work Schedule:

  • The project is set to begin April 24
  • Work is expected to be completed late October 2023
  • Normal working hours will be from 7 a.m. to 7 p.m. Monday through Friday

Traffic Impacts:

Motorists can expect the following impacts during the period of construction:

  • There will be an 11 foot lane through the course of the project
  • Delays up to 15 minutes can be expected
  • The speed limit will be reduced to 40 MPH through the work zone
  • Motorists are to follow directions from flaggers on site.

Refer to for real-time travel conditions and road closures

Work this Week & Lane Closures
CO 133 Rockfall Project

Project Facts

  • Construction Cost: $3.9 Million
  • Contractor: Meridian Contracting, Inc.
  • Timeline: April - October 2023
  • Location: CO 133 from just north of McClure Pass
    • City: Redstone to slightly North of Perham Creek Trailhead near Carbondale
    • Mile Point(s): 47.7 to 59.38
    • County: Pitkin