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Project updates

June 25, 2018: Paving update for: 214th Street SE (west of SR-527); 14th Drive SE in Bothell; and along 223rd Street in the Canyon Park Business Center

June 6, 2018: Intersection work at 208th Street SE and 14th Drive SE

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 the project information line at  206-205-9795.

Email David Freed, community services lead:

Project location


Back to the capital projects overview map .