Drivers will now have another week before SR 164 shuts down for three months of work south of the White River Amphitheatre.

The Washington State Department of Transportation (WSDOT) originally planned to close the highway this coming Monday, July 5, in order to replace an 11-foot diameter culvert that allows the Pussyfoot Creek to flow underneath the road with a 170-foot bridge.

But due to national supply chain issues, the full closure has been delayed to Monday, July 12 while the project’s contractor finishes obtaining the materials needed for the work, according to a WSDOT news release.

The closure will still take 90 days, so it is now scheduled to end Oct. 10.

This map, provided by the Washington Department of Transportation, shows the area that will be affected by the SR 164 closure.

The nearly $10 million project is located between SE 400th Street and SE 416th Street — more-or-less just south of the White River Amphitheatre.

“The culvert is too small and sections inside the existing culvert create conditions that make it very difficult or impossible for fish to travel upstream,” WSDOT’s webpage on the project reads. “The work will open about 9.3 miles of additional upstream habitat for resident and migratory fish, including Coho salmon, steelhead and coastal cutthroat trout.”

WSDOT recommends the following detours for passenger vehicles and trucks once construction starts:

Going north to Auburn, leave SR 164 at 196th Avenue SE, go north until turning west on SE 400th Street, and then return to the highway. Trucks and other large vehicles should leave Enumclaw via SR 169 until reaching SE 400th Street, which will take you to SR 164.