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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

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Hillsdale Crest Sewer Repair Project

Updated January, 2020Button. Click to sign up for email updates

Bureau of Environmental Services is designing a sewer project in the Hillsdale, Bridlemile, and Southwest Hills neighborhoods of Southwest Portland that will help keep stormwater and groundwater out of sanitary sewers in the area.

When stormwater and groundwater flows into sewer pipes designed to carry only sanitary sewage, it can cause sewer pipes to overflow and drain into ditches or nearby waterways. The Hillsdale Crest project will repair more than 16,000 linear feet of aging sewer pipe, much of which is more than 50 years old. The project will help keep stormwater and groundwater out of the system and ensure that the system has the capacity to safely carry sewage to treatment.

Hillsdale Crest sewer repair map

Schedule Update

Construction is postponed to late Spring of 2020, and is expected to be completed in Summer of 2021. 

Construction Method

Cured-in-Place Pipe-lining (CIPP) will be used to repair the sewer lines. Work crews access the sewer from manholes to insert a flexible liner inside the old pipe. Steam or UV light cures the liner, which gradually hardens to form a rigid, smooth surface that seals cracks and restores the pipe to near-new condition.

This trenchless method avoids cutting open the road surfaces, thus greatly reducing the amount of disturbances to the neighbors and shortening construction time from weeks to a few days. To learn more about construction methods, visit our website here:

Spot repairs or manhole installations may require excavation prior to beginning the lining process. In those cases, we will reach out to nearby properties individually ahead of time to coordinate construction activities. 

What to Expect during Construction

  • Odor may occur during the pipe lining process but it will dissipate quickly. The odor is from the chemical styrene in the resin liner installed inside the pipe. The amount of airborne styrene is not expected to cause health issues for workers or the public. To help reduce odors, run water in all sinks and basins to fill P-traps and completely cover floor drains with a wet towel or a zip bag filled with water.
  • Traffic delays should be expected in and near the work area. Please observe traffic control signs and flaggers.
  • Local access to all properties will be maintained, but normal use of your driveway may be delayed or impacted.
  • Utility services (sewer, water, etc) will remain in service. 
  • Work hours are 7:00 am to 6:00 pm Monday through Friday, but the contractor may schedule work during the same hours on Saturdays. 
  • Schedules are subject to changes due to weather, conditions underground, subcontractor schedules, and availability of materials, which may also lead to periods of inactivity.

For More Information

The best way to receive information on project activities is by clicking the "SIGN UP" button at the top of this page. If you have any questions or comments, please feel free to contact Ning Jiang at or 503-823-6006. 

Several sewer construction projects are happening simultaneously around your neighborhood. To see where they are and for project updates, visit our websites: 

Middle HillsdaleHillsdale South, and South Portland-Burlingame