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NE Gile Terrace Sewer Extension Project

Sewer and Stormwater
Environmental Services is designing a project to extend the public sewer into NE Gile Terrace and provide service to properties currently served by a nonconforming sewer. The project proposes to construct 306 feet of public sewer pipe, two manholes, one cleanout, and three sewer service laterals.
Project design continues. The construction timeline has not yet been determined.
On this Page

Project Area

The project is located on NE Gile Terrace between NE 22nd Avenue and NE Alameda Street.

What's Happening Now

Environmental Services continues the design process to determine necessary public sewer improvements and a construction plan. The design process involves extensive coordination with adjacent private properties. Their coordination with each other also influences the project, resulting in periods of inactivity due to private property negotiations about easements. Ongoing changes in private property ownership and easement negotiations influence the City's ability to finalize the design and proceed with construction.

We Want to Hear from You

Environmental Services will inform residents about project activities and respond to questions and concerns in a timely manner.

Sewer Emergency: In the event of a sewer backup or basement flooding, call the Maintenance hotline immediately at 503-823-1700. It is staffed all hours and all days, 24/7.

Construction Methods

Engineers are proposing to use a trenchless construction method called Horizontal Directional Drilling (HDD) to minimize impacts to the street, a retaining wall, and landscaping on NE Gile Terrace.

This method avoids having to dig large pits to install jacking and boring machines. Instead, crews dig much smaller sending and receiving pits. They use a drilling rig to drill a pilot hole and cut a path for the new sewer pipe. Crews install the new sewer pipe from the surface through the sending pit and then pull it through the cut path at the receiving pit.

After constructing the sewer improvements, crews restore the excavated entrance and receiving pit areas of the street plus any driveways and curbs that are damaged during construction.

What to Expect

Horizontal Directional Drilling involves the following steps:

  • Dig shallow sending and receiving pits to the required depth.
  • Drill a pilot hole that will establish the desired line and grade for the new sewer pipe.
  • Cut a larger-diameter path through the pilot hole to accommodate the new sewer pipe.
  • Install the new sewer pipe from the surface by pulling it through the cut path.
  • Connect the new pipe to the existing public sewer.
  • Cover open pits with steel plates—or secure the pits with fencing—at the end of each day as needed while work is in progress.
  • Backfill pits with sand or gravel and apply temporary asphalt patches.
  • Conduct quality control inspections.
  • Complete permanent pavement restoration of patched pits after work passes inspections.

Sign Up for Updates

Sign up for updates on the NE Gile Terrace Sewer Extension Project.


Cheryl Kuck

Community Outreach

phone number503-823-7898

Monday through Thursday, 7 a.m. to 5:30 p.m.

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