UPDATE: Northbound US 101 Hoquiam River Bridge closing for eight nights this June and July

UPDATE: July 14, 2023 - Please note that the northbound US 101 Riverside Bridge overnight closures scheduled for July 17-19 have been cancelled until further notice. Advance notice will be provided when the work is rescheduled.

UPDATE: June 15, 2023 - Please note that the northbound US 101 Riverside Bridge overnight closures scheduled to begin on Thursday, June 15 have been rescheduled. The first in the series of overnight closures will begin Tuesday, June 20. Two more overnight closures will be scheduled at a future date.

Preservation work also requires daytime single-lane closures in Hoquiam

HOQUIAM – Travelers heading to the beach this spring and summer will want to plan extra time if their routes go through Hoquiam. Crews are getting ready to repair and upgrade the machine rooms that help operate the northbound US 101 Hoquiam River Bridge, also known as the Riverside Avenue Bridge.

What to expect

The bridge will close to road traffic overnight up to eight times. During the closures, northbound US 101 travelers will follow a signed detour over the southbound US 101 Simpson Avenue Bridge, where a flagger will alternate each direction of traffic through a single lane. Northbound US 101 travelers will also see some single-lane closures during the day on the Hoquiam River Bridge.

Bridge closures


  • 9 p.m. Tuesday, June 20 to 5:30 a.m. Wednesday, June 21.
  • 9 p.m. Wednesday, June 21 to 5:30 a.m. Thursday, June 22.
  • 9 p.m. Thursday, June 22 to 5:30 a.m. Friday, June 23.

Single-lane closures

  • 6 a.m. to 3 p.m. Wednesday, June 14: The left lane will close as crews work on the west machine room tower.
  • 6 a.m. to 3 p.m. Tuesday, July 11: The right lane will close as crews work on the east machine room tower.

The Washington State Department of Transportation will announce any additional closures in advance on the WSDOT app and real-time map.

Why this is needed
Leaky roofs are compromising the electrical equipment housed inside both machine rooms. This work will prevent equipment failure and lane closures due to electrical concerns. The project will also increase safety for the crews that maintain the bridge. During the closures, WSDOT’s contractor, Rognlin’s Inc., will use a large crane to lift a new roofing system and other materials to the top of the bridge.

WSDOT asks that drivers please pay attention and slow down when passing through work zones to help keep crews and all roadway users safe.

Travelers can sign up for Grays Harbor County email updates to get the latest information on road work.

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