US 550 Ridgway North Rock Fall Mitigation Project Update

May 1, 2015 - Southwestern Colorado/CDOT Region 5 - New lane closures in place.

OURAY COUNTY - The Colorado Department of Transportation (CDOT) continues work on rock fall mitigation on US 550 north of Ridgway. The work began March 23, 2015; and the estimated construction completion will be mid-October 2015. The work zone is between milepost (MP) 106 and MP 107. Contractor Rock Solid Solutions is working on the rock slope above the roadway to remove rock fall hazards and to improve site distance around the curve; this involves drilling, blasting, installation of wire mesh and installation of rock bolts.

VEHICLE TRAVEL IMPACTS:  The project will have impacts to travel on US 550, including single-lane, alternating traffic and some full traffic stops in both directions for 20 minutes, Mon-Fri 9 a.m. to 3 p.m., during blasting. Delays may exceed 20 minutes as traffic queues are cleared. Please note – the blasting frequency is expected to decrease during the summer, and fewer full traffic stops will be necessary.

UPDATED! During the month of May, the more frequent blasting (required for the construction of the “pioneer” road on the slope) requires a full closure of the multi-use trail, Mon-Fri, from 9 a.m. to 3 p.m. The blasting frequency is expected to decrease after May, and a new schedule of (lesser) trail impacts will be sent at that time.

SIGN UP FOR PROJECT UPDATES:  If you are interested in receiving project progress updates to your email, please sign up today. Go to CDOT’s web site to the Projects page at:; then click the green cell phone in the upper right corner and follow the directions. Our project name is: US 550 Ridgway North Rocks.

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QUESTIONS?  Contact Stephanie Nocks, Project Public Information Manager, at (970) 549-4504.  You can also check out our website at

See short video of recent blast here: