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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

More Contact Info

Project Overview

Environmental Services is designing projects in the Hillsdale and Multnomah neighborhoods of Southwest Portland to repair or replace 30,000 feet, or 5.7 miles, of public sewer pipes that are on average 80 years old and in deteriorating condition.

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.

Project Area

The project area is divided into three sections, as shown on the map, and will be completed in phases. Project design is currently focused on the South section.

Hillsdale Sewer Repair project sections


Design in the South section will continue through 2018. A construction contractor will be selected in early 2019. Construction in the South section only is anticipated to begin in the summer of 2019 and take up to a year and a half 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.

Hillsdale South Section

Project design is currently focused on the South section, which will include about 9,000 feet, or 1.7 miles, of sewer pipes (see map).The South section will be followed by the Middle and North sections, although you may see crews in all three project sections throughout the life of the project.

Hillsdale South Project map

Approved Night Work

Environmental Services is partnering with the Portland Bureau of Transportation to complete sewer repairs on Capitol Highway as part of their repaving project. Work at each of the three locations (see map) should take less than one week and require one night of work at each location, with daytime pipe cleaning and sewer bypass setup.

Environmental Services will work 24/7 for approximately one day and night to line the sewer pipes. The pipe lining process is a minimum 24-hour process and cannot be stopped once started. Nighttime construction on Capitol Highway is expected to occur sometime between February 2019 and April 2019. The specific dates for this day and night work will be determined after a city contractor is hired to do the work.

Portland noise code allows construction from 7 a.m. to 6 p.m. Monday through Saturday. Work after 6 p.m. and before 7 a.m. and all hours on Sundays requires a noise variance from the Portland Noise Office. Because construction crews will work past 6 p.m. one day and night to line the pipes and harden the lining, Environmental Services applied for and was granted a noise variance. Equipment that generates noise will include a water jet truck, sewer cleaning truck, air compressor, sewer bypass pumps, generators, front end loader, and crane. Night work will require lights.

Project Map

Public and Private Property Access

Most sewer repair work will occur in the public right-of-way. It’s important that property owners understand that part of their land is deemed "public right-of-way" for streets, sidewalks, utilities, and similar public uses. In the Hillsdale neighborhood, the public right-of-way often extends well into what appears to be private property, including what appears to be private front lawns. Crews will access these areas to inspect and repair public sewers.

Public Sewer Easements

In addition, where the city has public sewer easements, crews may need to access private property for survey, other activities, and eventual sewer repairs. City outreach staff will coordinate with affected property owners for access to public sewer pipes and manholes.

Adjacent Projects in Southwest Portland

This area of Southwest Portland will see several sewer repair and stormwater improvement projects over the next few years. Two other large-scale sewer repair projects adjacent to this Hillsdale project are identified on the map below, including Council Crest-Homestead and South Portland-Burlingame projects. These projects are in the early stages of planning. A webpage for Council Crest-Homestead will be developed later this year.

Adjacent Southwest Projects map