Local Information

SR 107 Chehalis River Bridge to close for up to three days for settlement repairs

Wednesday, July 31, 2019 - 09:04

Tina Werner, communications, 360-704-3270

MONTESANO – Recently discovered pier settlement on the State Route 107 Chehalis River Bridge just south of Montesano has led Washington State Department of Transportation officials to temporarily close the bridge to travelers next week. This work is in conjunction with the existing rehabilitation project currently underway at the site.  

The bridge will close to traffic Tuesday, Aug. 6 at 8 a.m. and remain closed around-the-clock through 8 a.m. Friday, Aug. 9. During the repairs, travelers will follow a signed detour using US 101 and US 12 around the work zone.

The closure is necessary so that contractor crews working for WSDOT can begin efforts to further stabilize the south end of the bridge approach while construction to rehabilitate the crossing continues.

“The settlement has reached nearly 6 inches,” said WSDOT Aberdeen Project Engineer John Romero. “We knew the bridge was reaching the end of its useful life and have already began construction to replace the 200 or so timber pilings with concrete shafts that meet current seismic standards. During this closure, we’re focused on fixing the settlement as quickly and efficiently as possible for the safety of the traveling public and our crews.”

When the settlement was discovered, crew implemented an action plan and installed temporary shoring to keep traffic moving safely across the bridge. However, due to increasingly poor soil conditions at the site, significant settlement has continued and additional shoring measures are now required to prevent further settlement.

“It’s challenging soil to deal with,” said Romero. “We recognize the importance of this crossing to the traveling public and appreciate their patience as we work to address this issue.”

Travelers are currently alternating across the bridge using the western, single lane while the east half of the bridge is demolished. In spring of 2020, traffic will be shifted to the newly rebuilt east side of the bridge as the western lane is demolished and constructed.

Real-time traffic information is available on the WSDOT app and on the Grays Harbor Weekly Construction and Traffic Updates web page.

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