SAN MIGUEL COUNTY — A massive rockslide carrying a building-sized boulder destroyed a highway in southwest Colorado and closed the road indefinitely, the Colorado Department of Transportation reported.

The slide pummeled Colorado 145 about 12 miles north of Dolores Friday afternoon. The two boulders, smaller rocks and dirt it carried left an 8-foot-deep trench in the pavement.

Crews will need to blast one of the boulders into smaller pieces so that it can be removed from the road. There is no estimate for when the highway will reopen.

The rockslide further complicated travel this weekend in the San Juans. U.S. 550 between Silverton and Purgatory Ski Resort north of Durango is closed for the Iron Horse Bicycle Classic.

Travelers driving between Montrose, Durango and Cortez must detour to Dove Creek near the Utah border. The alternate route adds two hours to the trip between Montrose and Durango.

Twitter: @lizmforster

Phone: 636-0193

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