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

Concordia Sewer Repair Project

Updated September 21, 2018

Environmental Services continues construction of a sewer project to replace or repair up to 16,000 feet, or about 3 miles, of public sewer pipes in the Concordia Neighborhood, plus a few blocks in Woodlawn and Beaumont-Wilshire. Most of the sewer pipes are 90-100 years old and are in deteriorating condition. The sewer repairs will improve sewer and stormwater infrastructure, increase sewer capacity, and reduce the risks of street flooding and sewage releases to homes, businesses, and streets.

Concordia Construction Map


Developments of Note

The schedule for paving and Cured-in-Place Pipe Lining (CIPP) work has changed and will continue to be somewhat unpredictable due to the weather.

Construction Schedule

Crews are in various stages of repairs or replacement on sewer mainlines or sewer connections to properties at the following locations for the next couple of weeks:

Week of September 24:

  • Pipe burst mainline and open trench sewer connections to properties on NE 32nd Place between NE Prescott and Going streets
  • Trench paving NE Saratoga Street from NE 27th to the dead end, and NE 25th Avenue from the alley to NE Holman
  • Cured-in-Place Pipe Lining (CIPP)*:
    • Monday: NE 32nd Ave, mid-block north to Jarrett
    • Tuesday: NE 37th Ave between Rosa Parks Way and Liberty
    • Wednesday: NE 10th Ave, mid-block north to Holman
    • Thursday and Friday: To Be Determined

Week of October 1:

  • Continue to open trench sewer connections to properties on NE 32nd Place between NE Prescott and Going streets
  • Trench paving NE 27th mid-block to NE Ainsworth, from Jarrett to mid-block (north and south), and NE Jarrett from 27th to mid-block east.
  • Crews will be at various locations repairing manholes

*Please be aware that schedules are subject to change due to a variety of factors, including conditions underground, weather, traffic impacts and subcontractor and materials availability.

Construction Methods

The city uses many construction methods to repair or replace sewer pipes. In your neighborhood, the city’s contractor plans to use CIPP and pipe bursting in addition to the usual open trench method. CIPP is a trenchless repair method where crews access the sewer from manholes to insert a flexible liner inside the old pipe. The liner will be cured and hardened to form a new surface that seals cracks and restores the pipe to near-new condition.

People who live and work near a CIPP repair project can sometimes smell a chemical odor during the pipe-lining work. The odor is from the chemical styrene, which is in the resin liner installed inside the pipe. The odor dissipates quickly once the installation is complete. The amount of airborne styrene produced by the lining process is not expected to cause health issues for workers or the public.

Your water service should not be interrupted during the repair work; however, we request that you minimize your water usage because drainage into the sewer will be restricted and a back-up could occur in your home. Please do not run your dishwasher or washing machine and limit showers/baths until after the work is complete.

Pipe bursting is also a trenchless method that involves digging an access pit and inserting a bursting head into the existing line. The bursting head breaks the old pipe apart and pulls the new pipe into place behind it. This method involves a lot of preparation and post-bursting work, but actual pipe bursting takes just a few hours. The equipment is oud and causes vibration that you may feel in your home or business, which is standard for this method of construction.

Go to for more information and photos about construction methods.

What to Expect During Construction

  • Work on each block will be conducted in multiple phases with periods of inactivity between each phase ranging from a few days to a few weeks.

  • Except for night work, construction hours will be 7:00 a.m. to 6:00 p.m. Monday through Friday. The contractor may also schedule work during the same hours on Saturdays.

  • Construction creates noise, vibration, and dust and disrupts normal neighborhood activity.

  • The contractor will maintain local access, but construction may impact normal use of your driveway or entrance to your business.

  • You should expect traffic delays in and near the work area. Please observe traffic control signs and follow the directions of flaggers.

  • On‐street parking will be restricted in and near the work zones to create a safe work environment and to stage equipment and materials.

  • A city inspector will be on-site during work hours and may be able to assist you with an immediate need during construction.

  • Sewer, water, and other utilities will remain in service during construction.