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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 South Sewer Repair Project

Updated June 7, 2019

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Environmental Services is designing projects in the Hillsdale and Multnomah neighborhoods of Southwest Portland to repair or replace 30,000 feet, 

The project will also install new manholes and storm drain inlets where needed, repair existing manholes and storm drain inlets, and replace some public sewer connections to private properties from the main line in the street to the curb. This investment in your neighborhood will ensure continued dependable sewer service and protect the public and our environment by reducing the possibility of sewage releases to homes, businesses, and streets.or 5.7 miles, of public sewer pipes that are on average 80 years old and in deteriorating condition. Project design is currently focused on 9,000 feet, or 1.7 miles, in the South section, also known as the Hillsdale South Sewer Repair Project.

Engineers have determined which pipes will be repaired in the Hillsdale South project area, and have also identified construction methods and potential night work locations. To learn more about these construction methods click here.

Project Area

The Hillsdale South Project is one of three sewer repair projects planned for the Hillsdale area. Environmental Services is in the early stages of planning and design for the Middle and North sections. A construction date for these sections is not currently known, but it is anticipated that this work will take place following the completion of the South section.

Hillsdale South Project map


In the next few months, the city will be considering bids for construction and a contractor will be selected. Once a contractor is selected, they will begin developing the overall construction schedule.

Construction is anticipated to begin in November of 2019 and take a little over a year to complete.

Design and construction timelines for the Middle and North sections are not yet known. They will be done sometime after the South section.

Design Update

Over the last few months, crews have been in the neighborhood surveying, locating utilities, inspecting sewer pipes and manholes, studying soil types and conditions, and collecting information to help engineers decide which locations need repair and what construction methods are best for each location. You may still see crews in the neighborhood conducting these activities.

These design and pre-construction activities typically occur over time, rather than all at once.

What We Need from You

Environmental Services is working directly with individual property owners to gather information regarding access issues, private improvements in the right-of-way, and private sewer connections. If you have received one of these notices, please take the time to read and follow the instructions included in these documents. Your input and participation continue to help us design the best possible project with maximum benefits and limited impacts.

Night Work and/or Extended Hours

Engineers have identified additional locations that will likely require night work (see the map above). Due to the length and diameter of a few pipes, and traffic safety reasons, some of the work will extend a few hours beyond 6:00 p.m. or will need to be done overnight. Equipment that generates noise will include sewer cleaning trucks, compressors, light trucks, generators, pumps, and ventilation fans. Night work will require lighting of the work zone.

Work after 6:00 p.m. and before 7:00 a.m. and all hours on Sundays requires a noise variance from the Portland Noise Office. Environmental Services has applied for a noise variance to enable the city’s contractors to work both days and nights in certain locations.

Construction Methods

This project will include both trenchless and trench excavation methods:

  • Open Trench Pipe Repair: The contractor digs a trench, installs a new pipe, fills in the trench, and restores the street to its previous condition.
  • Pipe Lining (CIPP): Through a manhole, the contractor inserts a flexible liner into the existing pipe.  The liner hardens to seal cracks and form a new smooth pipe.
  • Pipe Bursting: The contractor pushes a bursting head into the sewer line to break apart the existing pipe while pulling a new pipe into place behind it.

For more details and photos of construction methods click here.

For More Information

If you would like more information about the project or have questions and concerns you’d like to discuss, please call or email:

Joe Tursi

Community Outreach 

Phone: 503-823-5753


If you have a concern or question about a pipe repair near you, please be sure to include your name, property address and project name (Hillsdale South) in your voicemail and email so we can provide you more details about what to expect in front of your property. Also, please write "Hillsdale South" in the subject line of your email. Click SIGN UP to sign up for periodic email updates.