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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Room 1000, Portland, OR 97204

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Southeast Interceptor Sewer Repair

Updated February 17, 2017

Environmental Services has completed design work for an inner southeast Portland repair of a deep interceptor sewer line that is deteriorating due to age. The repairs will extend the life of the sewer and protect public health, water quality and the environment. The city built the large-diameter Southeast Interceptor in 1954. It runs parallel to the Willamette River under inner southeast neighborhoods and is between 5 to 6 feet wide and 25 to 54 feet below the surface.

Two segments of the Southeast Interceptor require repairs. For the project map, click here.

What to Expect During Construction

Based on information collected about the condition of the Interceptor, the project team selected a repair technology that can be completed from inside the sewer line and will not likely require digging trenches in the roadway. The project work zones will be located at manholes (see map) and will move as the project segments are completed, with work at each manhole lasting up to two months. Crews may be working at multiple locations at the same time.

Accessing the sewer line through manholes will require temporary lane closures, which will require traffic control and construction signage. Where needed, traffic will be routed around the worksites. Traffic controls (cones, flaggers, temporary barriers, etc.) will be in place only during work periods and removed daily.

The manhole access locations will have adjacent staging areas for materials and construction vehicles. Equipment that generates noise will include sewer cleaning trucks, compressors, generators, ventilation fans, and other trucks and related equipment. The night work will also require lighting of the project area.

For more information

If you would like more information about the project or have questions and concerns you’d like to discuss, please call or email:

Cheryl Kuck
Community Outreach
Phone: 503-823-7898

Please include your name, property address and project name (Southeast Interceptor) in your voicemail and email so we can provide you more details about what to expect in front of your property. Also, please write "SEI" in the subject line of your email. Click SIGN UP! to sign up for periodic email updates.

Project Overview

Including the project description, map and schedule

Community Outreach

Check out current and previous communications about the project

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