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M Street Trunk rehabilitation

The M Street Trunk Rehabilitation Project will repair about 2.6 miles of deteriorated sewer pipes in the City of Auburn.

Project description 

The M Street Trunk Rehabilitation Project will repair approximately 2.6 miles of severely deteriorated 18, 24, 30, and 36-inch-diameter reinforced concrete pipe that has more than 100 side sewer connections to nearby properties. The project will also rehabilitate 45 precast maintenance holes.

This pipe serves a densely populated area with many schools, homes, and businesses in the City of Auburn. During construction for the project, there will be impacts to the travelling public including detours, temporary lane closures, and bus stop impacts. We will work with the community to limit these disruptions and will share information about any impacts before they occur.  

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Project update

December 2024

Surveying work starts December 16 continuing through December 20, 2024

Starting as soon as Monday, December 16th, a small team working for King County Wastewater Treatment Division will conduct a field assessment along and near the M Street Trunk sewer pipes to inform the project design. Personnel will use hand shovels and mesh screens to examine soil at up to 200 locations.

This assessment is expected to last through Friday, December 20th, and will provide valuable information to support the design of the M Street Trunk Rehabilitation Project.

View notice with project area map.

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Project location

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