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Project updates

Jan. 31, 2019: Canyon Park – 20th Ave. SE restoration & paving begins Feb. 4

Past project notices, along with fact sheets, news releases, and environmental documents can be found on the project’s document library page.

Project description

The County is completing repairs and replacement of a 2-mile pipeline that has been serving the Bothell area since 1970. The new pipeline will increase system reliability and capacity to accommodate population and business growth in this portion of the service area.

The new pipe was installed using both trenchless and open cut construction methods. The map below shows the different work areas and construction methods for the project.

Since early 2018 the new pipe has been carrying wastewater flows and providing increased system capacity and reliability.


King County began work in early 2015. Installation of the new pipeline was completed in early 2018. Continuing work involves additional work and restoration. Project completion is expected in late-2018.

Project area

Visit the construction page to view details of each project area.

Vicinity map for North Creek Interceptor ProjectVicinity map for North Creek interceptor project


Contact us

Call or email David Freed, community services lead:

Project location


Back to the capital projects overview map .