CO 119 Boulder Canyon Tunnel Repairs

About the Project:

Boulder Canyon tunnel north portal

The project includes nighttime closures of the Boulder Canyon Tunnel to perform minor repairs to the tunnel liner and both portals. This work includes shotcrete application, rock debris removal, rock scaling, and traffic control.

Work Schedule:

  • Work postponed until Spring 2023

Traffic Impacts:

  • Delays are expected to be minimal at that time.
  • During the closures, there are some detour routes (i.e. CO 72).
  • Drivers who need to travel during the closure times are encouraged to find alternate routes.

Project Facts

  • Cost: $89,000
  • Contractor: GSI
  • Timeline: April 16 - 20, 2023
  • Location: CO 119 from Magnolia to Fourmile Canyon Road (local access only to each side of tunnel)

Map of Boulder Canyon Tunnel on Bulder Canyon Drive