 November 11, 2026
Crews are relining King County’s sewer pipe on M Street Northeast between 22nd Street Northeast and 24th Street Northeast. Crews will work around the clock while the new lining material cures inside the existing sewer pipe.
The work is expected to take about a day and a half. It could happen between Friday, November 13, and Wednesday, November 18. The contractor has not set the exact date. The schedule may be subject to change.
Relining the pipe helps extend the life of our regional sewer system, saves money and reduce disruptions. Crews will install a temporary diversion pipe to keep sewer service running throughout the work.
Flaggers will guide vehicles and help traffic move in both directions near the work zone.
See the map below for more details.
- Night work will occur within permitted hours between 6 pm and 6 am.
- You will be able to use your sinks, toilets, and showers normally.
- Crews will maintain driveway access.
- Expect noise from trucks, generators, compressors, forklifts, vacuum trucks, and other construction equipment. To minimize nighttime noise, we will only run equipment when necessary.
- Lights will be used to safely illuminate the work area.
- There will be temporary lane and sidewalk closures. Please follow directions from flaggers and posted detour signs.
- Restricted street parking along the temporary sewer diversion pipe and repair work areas.
Stay safe! Please watch for equipment in the area. Travel slowly. Follow signs and directions from flaggers in the work zone.
The King County Wastewater Treatment Division is repairing about 2.6 miles of old concrete sewer pipe, with pipe sizes ranging from 18 to 36 inches wide, in Auburn. We are also repairing 45 maintenance holes and over 100 side sewer connections to homes and businesses. Repairing the M Street Trunk will keep the sewer pipe working for another 50 years and protect water quality and public health.
During the first phase of the project, we repaired 0.7 miles of pipe in 2025. In June 2026, crews began the second phase of the M Street Trunk Rehabilitation Project. Crews are repairing about 1.9 miles of sewer pipe serving the city of Auburn during this phase. Work is taking place between the intersection of 2nd Street Northeast and Pike Street Northeast and 23rd Street Northeast, near the Auburn Municipal Airport (Zones 30 and 36).
We will keep community members informed of project progress and be available to answer questions and address concerns throughout construction. Contact us at 206-263-9878 or email MStTrunkrepair@kingcounty.gov
We will provide additional translations or an interpreter at no cost.
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