Local Information

SR 9 closed in Skagit County July 30 - Aug. 4

Thursday, July 12, 2018 - 15:07

UPDATE: Crews from Interwest Construction Inc. have finished culvert installation work ahead of schedule. Crews reopened SR 9 north of Big Lake at 4:30 a.m. on Thursday, Aug. 2.

Andrea E. Petrich, communications, 360-757-5963
Ron Burke, assistant project engineer, 360-848-7102

Full closure north of Big Lake for fish passage improvements

BIG LAKE– A five-day closure is coming to State Route 9 south of Mount Vernon later this month as crews work to improve salmon and steelhead habitat through Gribble Creek.

Full highway closure
At 7 a.m. on Monday, July 30, Washington State Department of Transportation contractor crews from Interwest Construction Inc. will close the highway just north of West Big Lake Boulevard, 1.5 miles south of SR 538, to install a new, larger culvert. Crews will reopen the highway by 7 a.m. Saturday, Aug. 4.

Detour route
Detour routes for people driving or bicycling during the 2018 SR 9 Gribble Creek fish passage road closureDrivers should use SR 534, Interstate 5 and SR 538 to navigate around the closure. Bicyclists using Bike Route 13 – Centennial Route along SR 9 can use SR 534 to Cedardale, Anderson and South La Venture roads to BR 14 as an alternate route. Bicyclists can also reference the Skagit County Bike Map for other possible routes.

During the closure
Crews will use this full closure to excavate the area under SR 9, use cranes to pull out the existing narrow culvert that channels Gribble Creek and replace it with a 72-by-19-by-15 foot concrete culvert. Once the culvert is placed, crews will rebuild the road above it, put down new asphalt and temporarily restripe the area before reopening the highway.

Following the full closure, crews will use daytime single-lane closures to complete the work. The closure schedule is updated weekly on WSDOT’s construction update page.

WSDOT has worked for decades to improve fish passage, reconnect streams and keep our waterways healthy. The current narrow culvert causes water flows to sometimes be too strong for younger and older fish. Replacing the old round culvert with a larger culvert will help restore the creek bed to a natural state, improve fish passage for salmon and steelhead and maintain compliance with a U.S. District Court ruling.

Staying informed
People who drive or bicycle on SR 9 can stay updated on this project through the WSDOT North Twitter account, viewing pictures through the project’s Flickr album, and by downloading the WSDOT app.

Those who use this stretch should also be aware of other resurfacing, roundabout and paving projects happening on SR 9 between Big Lake and Sedro-Woolley this year.

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