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 is expected to start on Monday, August 1, 2022 and last about two weeks.

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.