US Highway 550 between Durango and Silverton will experience full road closures in both directions Aug. 25 through Aug. 28 from 11 a.m. to 3 p.m., each day. Northbound motorists will be stopped approximately two miles south of the Coal Bank Pass Overlook (Mile Point 56.6) and southbound traffic will be stopped at Andrews Lake Road (Mile Point 63). This daily four-hour closure will allow crews to safely and efficiently install a new culvert under the roadway near the summit of Coal Bank Pass.  

Motorists should plan accordingly and schedule all travel around the set closure times or consider the alternate north-south route via Colorado Highway 145 through Telluride. Additionally, motorists can continue to expect full stops and up to 20-minute delays at both traffic signal locations between Mile Point 56 and MP 60 throughout the duration of the project. 

Since starting work on the US 550 Rockfall Mitigation and Wall Replacement project on May 12, crews have conducted slope excavation, rock removal work, and have begun exporting the excavated material to a stockpile location at the pull-out near Andrews Lake (MP 62.7).  

Work to stabilize and reinforce the sub-grade under the roadway at the Coal Bank (Mile Point 56.9) just north of Engineer Mountain Trailhead is complete. Crews are now installing a culvert and constructing a new retaining wall structure underneath the highway. 

 

Project Information 

 

For additional information about this project: 

• Call the project information line at 970-718-5148 

• Email the project team at: us550wall@yahoo.com 

• Visit the project website at: www.codot.gov/projects/us550wallreplacement