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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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NW Northrup Sewer Repair Project

Updated June 2019

City of Portland Environmental Services – your sewer and stormwater utility - is designing a project to repair nearly 260 feet of 130-year-old public sewer pipe under NW Northrup St between NW 22nd and NW 21st avenues. Multiple tree roots have grown into the pipe causing it to deteriorate. Repairing the sewer now will reduce the possibility of costly breaks, sink holes and sewage releases to homes, businesses and streets.


Construction is anticipated to begin at the end of this summer and take up to five months to complete.

Night Work Proposed

Due to high traffic volumes and Portland Streetcar operations in this location, repairs are required to be performed at night, and on weekends (see map). Equipment that generates noise will include sewer cleaning trucks, compressors, generators, excavators, bypass pumps, and ventilation fans.

Submit comments to Portland Noise Office

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 will apply for a noise variance to enable the city’s contractors to work on seven nights and some weekends.

Your comments regarding the proposed schedule to work both evening/night and weekends are valuable, and you can submit them to the Portland Noise Office by Friday, June 21:

Portland Noise Office, 1221 SW 4th Avenue, Suite 110, Portland, OR 97204
Phone: 503-823-7350

Locations and Durations

NW Northrup between NW 21st and NW 23rd avenues: Crews will line the main sewer pipe using trench-less Cured-in-Place Pipe (CIPP) lining. The curing process to harden the liner is expected to extend a few hours past 6:00 p.m. for four nights.

Mid-block on NW Northrup between NW 22nd and 23rd avenues: To avoid shutting down the Streetcar service, night work is proposed for the installation of a lateral and two cleanouts at this location using trenchless methods. Three nights of work are expected.

NW Northrup between NW 22nd and 23rd avenues (near NW 22nd): To minimize disruptions to services at the Legacy Good Samaritan Hospital, some work activities have been identified for work on weekends, including Sundays. Weekend work may occur for select activities periodically throughout construction.

For more details of construction methods visit:

For More Information

We are working closely with nearby businesses to minimize impacts to their operations. We will also send more notifications prior to and during construction. If you have questions or concerns: