US 24 Tenessee Pass Sinkhole Update

The closure zone begins near the top of Tennessee Pass at mile marker (MM) 166 and extends south to MM 162. Crews are on site 24/7 to enforce the closure.

CDOT has begun an expedited emergency bidding process for highway repairs. Contractors have until 2 p.m. on Monday, July 16 to submit bids which will then be reviewed. CDOT is hoping to have a contractor on board late Monday or early Tuesday of next week with repairs to start shortly thereafter. At this time, repair costs are anticipated to be between $1 and $2 million, which will include repairs to stabilize the collapsed tunnel and fill the cavity under the roadway.

Repairs are estimated to take a little over a month, during which time the highway will remain closed to motorists and the detour will remain in place. Although the exact start and finish date of the project are not known at this time, CDOT is making the opening of US 24 a priority, so the contractor will be provided financial incentives for completing the project ahead of schedule, and will be sanctioned with disincentives for completing the project behind the anticipated schedule. At this time, the repairs are tentatively scheduled to be completed ahead of when the USA Pro Challenge plans to go through the area, but the schedule is subject to change based on weather, natural disasters, and other unforeseen circumstances.

All motorists, including those who live locally, must continue to use State Highway 91 as a detour. The closure point is at mile marker 165, so access to local businesses and roadways remains possible. Travelers hoping to visit Camp Hale, which is just south of Red Cliff, will be able to do so.

CDOT continues to work with state historians and is referencing its archives to build a full history of the tunnel and roadway.