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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.

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Project update

March 2024

The public outreach and communication predesign survey was closed on March 15, 2024.  We thank you for taking the time to give us your valuable input on how we can best engage with the community to receive feedback, answer your questions, and provide up-to-date information about the progress of the project from design to construction. 

Check back soon for more project updates.

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