Boeing Creek Culvert Replacement Project (Hidden Lake Phase 2)

Construction dates: June 2026 – late 2026 (approximately 6 months)

In the first phase of the Hidden Lake Dam Removal project, we removed the dam at Hidden Lake and restored Boeing Creek through the former lakebed. We are now beginning the second phase of the project which will replace the existing culvert below NW Innis Arden Way. This work will help minimize flood and erosion risks in the area. It will also help remove barriers to fish passage and improve the habitat for native species in and around Boeing Creek.

This work takes place in a stream, so we are required to follow Washington State regulations on the timing of construction. These regulations limit any possible disruption to fish and their migration patterns.

Full closure – NW Innis Arden Way

This work requires a full closure of NW Innis Arden Way between NW 166th Street and the entrance to Shoreview Park. Please use alternate routes to travel through the area. The full closure will begin June 8 and is expected to be complete at the end of October 2026. There may be single lane, temporary closures before and after the full closure. 

Closure location

Suggested detour route

More information

Project Manager: Michelle Horio, P.E.
Contact: mhorio@shorelinewa.gov, 206-801-2457
Website: shorelinewa.gov/hiddenlake