SR 527 - Penny Creek - Fish Passage - Detour map

A map showing the detour for the SR 527 Penny Creek fish passage project.

On two weekends during summer 2021, we will close both directions of SR 527 just south of 164th Street SE in Mill Creek to replace a culvert at Penny Creek. The culvert blocks fish passage under the highway. Dates for the closures will be announced in late spring 2021. During the closures travelers will use detours via SR 524, North Road and 164th, or via Seattle Hill Road, 35th Avenue SE and 180th Street Southeast.

This work also will require numerous overnight lane closures. Use caution and watch for flaggers who will be controlling traffic.