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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

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Sullivan Gulch Trunk Sewer Repair

Updated September 17, 2020

Air Quality Alert

Due to hazardous air quality, construction that was originally scheduled for last week and early this week has been postponed. Once conditions improve, crews will resume their full-time work outdoors. For construction schedule, please see below.

Thank you for your understanding and patience.

The City of Portland’s Bureau of Environmental Services is continuing our work to repair and replace critical sewer and stormwater infrastructure. Environmental Services will continue to provide information and updates on construction schedules and activities during the COVID-19 emergency.

Button to sign up for email updatesCity of Portland Environmental Services—your sewer and stormwater utility—is designing a project to repair a large aging sewer pipe that is in deteriorating condition in the Lloyd neighborhood. The Sullivan Gulch Trunk Sewer Repair project intends to repair 125 linear feet of pipe with a diameter of 72 inches. This repair will help to protect the public and our environment by reducing costly breaks, leaks, blockages, and sewage releases to homes, businesses and streets.


The project area is adjacent to Union Pacific Railroad building at 301 NE 2nd Avenue, below the I5 and I85 freeways. Construction is
anticipated to be completed by the end of October 2020.

General Work Hours

All work will occur between 7:00 a.m. and 6:00 p.m., Monday through Friday, and on Saturdays if needed. This schedule may change due to a variety of factors, including weather, conditions underground, availability of materials and labor, and other factors.


Once conditions improve, Titan Utilities, city’s contractor, will schedule work to install steel liners and to grout the liners. For more information on construction method, see below.

Construction Method

Crews will enter the sewer tunnel from maintenance access holes and construct a new sewer inside the old concrete sewer using steel liner plates. After the steel liner plates have been assembled, they will grout the spaces between the new plates and the old concrete sewer. This method of construction will avoid digging trenches in the roadway and reduce aboveground impacts to the traveling public and adjacent properties.

For safety, crews can only work inside the tunnel on dry days when there is minimal wastewater flowing into the tunnel. In the event of rainfall or a sudden surge of stormwater flowing into the tunnel, crews and equipment must be removed quickly from the sewer tunnel, and completion of repairs will be rescheduled during dry weather.

What to Expect During Construction

You can expect the following activities and impacts during sewer construction:

  • Safety: Please keep children, pets, and vehicles clear of all construction activities and areas.
  • Work Hours: Work hours will be 7 a.m. to 6 p.m. Monday through Friday, and the same hours on Saturday if needed.
  • Noise, Vibration, and Dust: Construction creates noise, vibration, and dust and disrupts normal neighborhood activity.
  • Traffic Delays: Local access will be provided, but you should expect traffic delays in and near the work area and delays getting to and from your driveway.
  • Parking Restrictions: On-street parking will be restricted in and near the work zones to create a safe work environment and to stage equipment and materials.
  • Equipment Storage: Some equipment and materials may be stored on the street overnight.
  • Maintained Service: Sewer, water, and other utilities will be maintained during construction.
  • Schedule Changes and Inactivity: Construction occurs in phases, and there may be periods of inactivity between phases. Schedule is subject to change due to many factors.

Stay Informed

  • Be part of the project email updates by sending an email to with “Sullivan Gulch” in the subject line.
  • Call Stefanus Gunawan with questions or comments at 503-823-5759.