Storm damage recovery

SW 16th Ave and College St Sewer Project

Sewer and Stormwater
Environmental Services is repairing approximately 350 feet of public sewer pipe along SW 16th Avenue in the undeveloped right-of-way between SW College and SW Upper Hall streets. Repairing this aging and damaged sewer pipe will help protect public health and the environment.
Construction began in November 2023 and should be completed in January 2024.

In 2019, Environmental Services was originally slated to repair the sewer pipe within the undeveloped right-of-way between SW College and SW Upper Hall streets but had complications. The project went back to the drawing board to have further investigations to try and figure out the best avenue to repair the sewer in such a complicated area. Design is now complete and will begin construction November 3.

Pipe repair location on SW 16th Avenue between SW College St and Upper Hall St.


Construction is anticipated to be complete in January 2024.

What's Happening Now

All work is weather-dependent and subject to change. 

Week of December 11 and 18:

The following construction activities will occur during work hours between 7 a.m. and 6 p.m., Monday through Friday.

  • Continue CIPP on sewer mainline.
  • CIPP sewer connection to private property.
  • Install coconut matting/erosion control to wall.


Week of January 2:

  • Clean up and post-videotape sewer lines.

Method of Construction

Crews will repair the sewer pipes using a trenchless method called cured-in-place-pipe lining (CIPP). CIPP involves inserting a flexible liner inside the old pipe, inflating the liner, and exposing it to heat or ultraviolet light to “cure” and harden the liner inside the pipe.

Although sewer, water, and other utilities are expected to remain in service during construction, you may be requested to limit water usage during some stages of construction. We will notify residents in advance if they need to limit water use.

To learn more about this sewer construction method, go to

What to Expect During Construction

A brief guide on what you can expect during construction projects conducted by Environmental Services and their contractors can be found at

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This project will help protect the health of the Willamette River Watershed.