156th St SE Drainage Pipe Replacement


Snohomish County is proposing to replace a failing 24-inch drainage pipe that crosses 156th St SE in the 8500 block. The new pipe will be 36 inches to accommodate a higher capacity.


Construction will begin August 2022 and last for two weeks. Sign up to receive project updates including the construction start date once it has been determined (see link on right sidebar).

Traffic Impact

This project is expected to require a two-week full-road closure. See map for detour route.


This project is estimated at $76,000, funded by Surface Water Management Utility fees.