Skip to Main Content View Text-Only

The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

MAILING ADDRESS: 1120 SW 5th Ave, Room 1000, Portland, OR 97204

More Contact Info

Southeast Interceptor Sewer Repair

Updated October 12, 2018Button. Click to sign up for email updates

Environmental Services has completed the latest phase of construction to repair the deep and wide Southeast Interceptor sewer tunnel. The sewer line 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. The repairs will extend the life of the sewer and protect public health, water quality, and the environment.


The project includes two segments of the Southeast Interceptor (see map below).

SEI Project Map


Crews have completed this phase of repairs to the Southeast Interceptor and expect to be out of the project area by the end of next week, October 19.

Now that we are in the rainy season, it is unsafe for crews to work inside the deep pipe tunnel. The sewer repair method for this project can only be completed from inside the tunnel on dry days when there will be no flow into the tunnel from rain or other parts of the sewer system. Even when we have a dry day this time of year, it takes one full day to remove the sewer bypass equipment and three days to dry out the sewer tunnel before crews can return to work inside it.

Environmental Services will review its design for the project and schedule additional repair work at a future date.

Project Accomplishments

Environmental Services and the contractor accomplished the following during this phase of construction:

  • Gathered data on the existing conditions of the sewer tunnel
  • Removed sediment from the sewer tunnel
  • Cleaned the sewer tunnel
  • Completed grouting work to repair the tunnel from SE 16th Avenue to SE Taggart Street
  • Patched grouting holes inside the sewer tunnel
  • Developed a successful temporary sewer bypass system to ensure uninterrupted sewer service while crews worked inside the sewer tunnel
  • Developed a successful manned-entry safety plan for crews to work inside the sewer tunnel

For more information

For more details about the project, click here. If you have questions and concerns you’d like to discuss, please call or email:

Cheryl Kuck
Community Outreach
Phone: 503-823-7898

If you want to be informed about future repairs for the Southeast Interceptor, click SIGN UP to sign up for periodic email updates or email Cheryl. Please be sure to include your name, property address, business name, and project name (Southeast Interceptor) in your voicemail and email so we can provide you more details about what to expect at your property. Also, please write "SEI" in the subject line of your email.

Project Overview

Including the project description, map and schedule

Community Outreach

Check out current and previous communications about the project