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Section of Colorado Highway 3 to close for two-week rockfall mitigation

Business and trailhead access to remain accessible
The cliffside along the southern end of Colorado Highway 3 in Durango is prone to rockslides. The Colorado Department of Transportation will close the southern end of the road to perform rockfall mitigation March 9 through March 20. Business and trailhead access will remain open. (Courtesy of the Colorado Department of Transportation)

A section of Colorado Highway 3 – a two-lane road skirting the east side of the Animas River southeast of downtown Durango – will close March 9 as crews from the Colorado Department of Transportation perform a rockfall mitigation project.

The project is expected to wrap up by March 20, according to a news release from CDOT. About six-tenths of a mile of the southern section – from the junction with U.S. Highway 160 near Walmart to the southern intersection of Sawmill Road south of Animas Surgical Hospital – will be closed. The closure will be in effect day and night.

Drivers will still be able to access businesses on Highway 3 and Sawmill Road via Camino del Rio, Larry Valdez Way and East Eighth Avenue. Additionally, access to the Carbon Junction trailhead will remain open.

A map showing the alternate route to access businesses on Highway 3 and Sawmill Road. Motorists are encouraged to use Highway 160/550 (Camino Del Rio), Larry Valdez Way and East 8th Avenue. (Courtesy of the Colorado Department of Transportation)

“Trail users can access the trailhead and its parking area via Dominguez Drive and the Carbon Junction frontage road,” the release said. “The right turn lane – just south of the high bridge – from US 160 onto Highway 3 will be closed.”

The release said specialized geotechnical crews will perform rock scaling and blasting operations on the cliffside bordering the east side of the closed section of road. The goal is to reduce the hazard of rocks falling onto Highway 3 from the cliffside, which is prone to frequent rockslides.

Loose material will be removed from the cliff by technicians on the slopes manually removing unstable rock and by blasting, the release said.

Workers will install new stabilizing anchors along the cliff, the release said, as well as clear rocks from behind the concrete barriers and repair rockfall fencing designed to catch and contain rocks and boulders that fall from the cliff.

Motorists can stay up-to-date on roadway conditions by visiting cotrip.org.

sedmondson@durangoherald.com



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