US 550 scheduled to fully close June 1 between Silverton and Molas Pass

Travel Advisory

May 26, 2026 - Southwestern Colorado - Traffic will be stopped in both directions from 7 a.m. to 2 p.m. during chip seal operations

Southwest Colorado - On Monday, June 1 US Highway 550 will be closed to traffic between Silverton and Molas Pass while crews perform chip seal operations along a six-mile segment of highway (Mile Points 64 to 70). The full closure is necessary to allow for worker and motorists safety along a narrow portion of roadway. Motorists must seek alternate routes between 7 a.m. and 2 p.m., or travel through the closure points before 7 a.m.

Drivers may consider an alternate route between Durango and Ridgway. This westerly route will add approximately one hour of additional driving time, taking approximately three hours from Durango to Telluride and ending in Ridgway (approximately 150 miles). Continuing south on US 550 to Silverton will add an additional 60 minutes of drive time (approximately 40 miles).

  • US 160 Durango to Mancos
  • CO 184 Mancos to Dolores
  • CO 145 Dolores to Placerville
  • CO 62 Placerville to Ridgway
  • US 550 Ridgway to Silverton

Traffic Impacts

Working hours are planned from 7 a.m. to 2 p.m., on Monday, June 1. Traffic impacts include:

  • Northbound Closure: Vehicles traveling northbound between Durango and Silverton will be stopped at Molas Pass (MP 64)
  • Southbound Closure: Vehicles traveling southbound between Silverton and Durango will be stopped in the town of Silverton (MP 70)

After surface treatment operations are complete and the highway is open motorists are reminded to take the following precautions while traveling through the chip seal work zone.

  • Slow down ― Higher speeds can cause loose stones to scatter and damage vehicle paint and windshields
  • Increase distance between vehicles ― Space between you and other vehicles will help reduce damage caused by loose stones
  • Follow work zone signage and flagging personnel ― Consider the safety of other motorists and the safety of the work crew when traveling through the project construction zone
  • Use caution ― Cyclists and motorcyclists should use extreme caution along the recently treated highway segment
Map of the US 550 closure and detour on June 1 between Molas Pass and Silverton.
Map of the US 550 closure and detour on June 1, 2026 between Molas Pass and Silverton.

Know Before You Go

Travelers are urged to “know before you go.” Gather information about weather forecasts and anticipated travel impacts and current road conditions prior to hitting the road. CDOT resources include:

Remember: Slow For The Cone Zone

The following tips are to help you stay safe while traveling through maintenance and construction work zones.

  • Do not speed in work zones. Obey the posted speed limits.
  • Stay Alert! Expect the unexpected.
  • Watch for workers. Drive with caution.
  • Don't change lanes unnecessarily.
  • Avoid using mobile devices such as phones while driving in work zones.
  • Turn on headlights so that workers and other drivers can see you.
  • Be especially alert at night while driving in work zones.
  • Expect delays, especially during peak travel times.
  • Allow ample space between you and the car in front of you.
  • Anticipate lane shifts and merge when directed to do so.
  • Be patient!

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