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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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Slabtown Sewer Replacement Project

Updated June 19, 2019

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Environmental Services 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.

June 20 & 21:

  • Crews will be preparing NW Quimby between 18th and 19th for final paving and restoration on Thursday, June 20 and will pave on Friday, June 21.
  • Crews will continue to prep and pave the bursting pits in NW Raleigh between 20th and 21st avenues.

Week of June 24:

  • Crews will continue to excavate the bursting pits in NW Raleigh between 20th and 17th avenues.
  • Crews will begin bursting the mainline in NW Raleigh between 20th and 17th avenues.
  • Crews will also begin setting manholes at the intersections of 18th and 17th avenues and NW Raleigh.
  • While one crew is bursting the main sewer line in NW Raleigh between 20th and 17th avenues, a second crew will be installing service connections to the mainline in Raleigh between 20th and 21st avenues.

Week of July 1 – NO WORK ON JULY 4 or 5:

  • Crews will continue to install manholes at the intersections of 18th and 17th avenues and Raleigh.
  • Crews will begin installing service connections in Raleigh between 20th and 17th avenues after the new main sewer line pipe is installed.
  • A second crew will begin to prep and pave the bursting pits in NW Raleigh between 20th and 17th avenues.

Final Restoration and Paving

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.

Paving Schedule

Due to paving subcontractor availability, paving in certain sections of the project area is taking longer to complete. Paving is dependent on weather conditions and paving contractors are in high demand during the summer months. Thank you for your patience while we work to finalize restoration and paving throughout the project area.

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