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 August 31, 2026
As early as Wednesday, September 2, crews will repair the sewer pipe and maintenance holes on 24th Street Northeast between I Street and M Street Northeast. We expect to finish on Saturday, September 5. The schedule may be subject to change.
We will reline the pipe with a material that can cure in place inside the pipe. Relining the pipe saves money and limit disruptions. This work requires crews to work continuously around the clock. A temporary diversion pipe will keep sewer service running while we do these repairs.
Flaggers will guide vehicles and help traffic move in both directions near the work zone.
See the map below for more details.
- Crews will work around-the-clock from 5 a.m. on Wednesday, September 2, to 7 p.m. on Saturday, September 5.
- 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 at night.
- Expect traffic detours, equipment, and lane and sidewalk closures.
- Street parking restrictions 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. Rehabilitating the M Street Trunk will help preserve aging infrastructure and ensure the reliability of our regional wastewater system.
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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