Grays Harbor Traffic: Several Short Closures of US 101 Near Cosmopolis Scheduled for Slide Evaluation; Drilling

Travelers will detour via SR 109 and Blue Slough Road

Submitted by Washington State Department of Transportation

UPDATE: The previously announced, scheduled drilling of US 101 for Friday, Feb. 28, has been canceled and rescheduled for 8 p.m. to 10 p.m., Monday, March 2, and Thursday, March 5. The changes are now reflected in the text below.

Travelers on US 101 will want to add extra travel time during three short closures of the road due to ongoing landslide assessment.

Engineering geologists for the Washington State Department of Transportation will drill and collect samples of recent roadway settlement along US 101 at milepost 78.6 in Grays Harbor County. During this work, the highway will be closed to all travelers.

The roadway has been reduced to one-way alternating traffic since Jan. 24, 2019, when the settlement was discovered. The full closures are needed to allow crews to safely assess the nearly 1-foot of settlement that caused cracks to develop in a portion of the roadway and recommend long-term repairs. During the closures, travelers will detour using State Route 109 and Blue Slough Road.

US 101 closure between milepost 80.6 and milepost 77:

  • 8 a.m. to 10 a.m. Saturday, Feb. 22
  • 8 p.m. to 10 p.m. Tuesday, Feb. 25, and Friday, Feb. 28.

Outside of these hours, traffic will resume alternating through a single lane of roadway while maintenance crews continue to monitor the site. WSDOT will announce any additional closures as they are scheduled. A timeline for permanent repairs will be shared once it is finalized.

This new roadway settlement is roughly 1,000 feet away from a separate slope stabilization project that began last summer.

Real-time traveler information is available via the WSDOT app and by following the WSDOT regional Twitter feed.

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