Construction on Northeast Hazel Dell Avenue water quality retrofit project to begin Oct. 3

Published Date

On Oct. 3, construction will begin on a water quality retrofit project along Northeast Hazel Dell Avenue from Northeast 83rd Street to Northeast 86th Street. The project includes installation of stormwater treatment basins and vaults to improve water quality in Cougar Creek, and downstream improvements to the stormwater collection and treatment system.

Northeast Hazel Dell Avenue will remain open during construction; however, drivers should expect delays and lane closures. The outer lane and bike lane on southbound Hazel Dell Avenue will be closed for the duration of the project. Drivers should watch for flaggers and signage directing traffic through the construction area. Access to local businesses will remain open.

Construction is expected to be completed by the winter of 2023-2024. Construction start and end dates are weather dependent.

Project updates and information can be found at

To receive information about road and park projects, closures, opportunities for community input, and more, residents can follow Public Works on Twitter, Facebook and Instagram and view information on Nextdoor.

Kaley McLachlan-Burton, Community Engagement and Inclusion manager, Public Works,, 360.946.7584