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Eastside Interceptor Section 8 rehabilitation
The Eastside Interceptor Section 8 Rehabilitation Project will repair 4,800 feet of a 90- to 96-inch wastewater tunnel in Bellevue that is nearing the end of its useful life.
Project description
The Eastside Interceptor (ESI), which consists of 14 sections, is one of the largest conveyance systems within the Wastewater Treatment Division. The ESI collects and conveys untreated wastewater from homes, businesses, and schools between Kirkland and Renton and sends it to South Treatment Plant, located in Renton, to be cleaned and released into Puget Sound.
This project will repair a 1-mile section of the ESI called Section 8 (ESI 8), starting near the intersection of Interstate-90 and Interstate-405 in Bellevue to the intersection of Coal Creek Parkway Southeast and I-405. Repairs will help the pipe last another 50 years.
Project update
Understanding site conditions and rehabilitation options
Our team is in the early stages of project design. During summer 2024, the project team will:
- Survey the project area to understand existing conditions in the Eastside Interceptor Section 8 (ESI-8) sewer line and maintenance holes.
- Conduct geotechnical surveys to understand underground conditions.
- Inform community members about the project and upcoming survey work.
- Analyze design alternatives and identify a preferred option to rehabilitate the sewer line and the temporary diversion pipe.
Check back soon for more project updates.
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