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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

Slabtown Sewer Replacement Project

Updated February 14, 2020

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Environmental Services (BES) continues construction on the Slabtown Sewer Replacement Project in NW Portland (between NW Thurman and Overton and 12th to 21st). The project is repairing 8,400 feet (more than one and a half miles) of sewer mains in streets, some of which are more than 115 years old and deteriorating due to age. Our crews will repair service connections that connect properties to the sewer system, replace stormwater inlets and inlet pipes, and repair or replace more than 46 manholes throughout the project area. Taking these actions now will help protect the public and the environment by reducing the possibility of costly breaks, leaks, blockages and sewage releases to homes, businesses and streets.

Current Construction Map

Construction Schedule  

Work on each block will be conducted in multiple phases with periods of inactivity between each phase, typically ranging from a few days to a few weeks. Please be aware that schedules are also subject to change due to a variety of factors, including conditions underground, weather, traffic impacts and subcontractor and materials availability.

Week of February 17:

  • Crews will be installing the final section of mainline pipe in the intersection of NW 14th and Quimby.
  • Crews will be prepping NW Raleigh between 18th and 20th avenues for final paving.
  • Crews will continue to prep and restore sidewalks and ADA ramps on NW 12th between Overton and Quimby.
  • A second crew will be installing a manhole in the intersection of NW 19th and Thurman.

Week of February 24:

  • Crews will continue restoration work on NW 12th between Overton and Quimby
  • Crews will also be pouring new ADA ramps on NW Saiver between NW 16th and 17th avenues.
  • Crews will be prepping and paving sections of NW Raleigh between NW 17th and 20th avenues.

Safety Around Construction

Safety is our top priority for the public and our crews. Please use caution, slow down, and follow the direction of flaggers to navigate through an active construction area. We understand that construction can have many impacts on people living and working in the area, and we appreciate your patience and understanding while we perform these necessary sewer repairs.

Final Restoration and Paving

Most of the pipe work in this project is complete, and crews have started preparing sections of the project for final restoration and paving. Final restoration and paving are subject to multiple factors include weather and subcontractor availability. Thank you for your patience while we work to finalize restoration and paving throughout the project area.

Due to the extent of the paving requirements for this project, crews will first prepare an area for paving the day before the actual paving. This will require a hard closure of the portion of the street that is to be paved the following day. Local access to neighboring businesses and residents will be maintained, but there will be delays while crews make the site safe for passage.

Construction Methods

Open trench construction will be used for this project. Open trench construction is the traditional and most common method of sewer construction and consists of excavating the existing pipe, replacing or repairing it, and the refilling the trench. For more details and photos about this and other construction methods, visit

To learn what to expect during construction, visit

We want to hear from you

We would like to know about the access needs at homes and businesses in the area, as well as any parking concerns, delivery schedules or other information you would like to share. Please contact us directly (information below).

For More Information

With questions, comments or concerns about business operations, medical issues or deliveries, please contact Joe Tursi at or 503-823-5753. To sign up for periodic email updates, click the Sign Up! button or email Joe with “Slabtown” in the subject line.

Slabtown Background

A brief history and background of the Slabtown project area

Slabtown Sewer Project Business Survey

Environmental Services is seeking feedback from businesses in the project area