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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Room 1000, Portland, OR 97204

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Kenton Sewer Repair Project

Kenton Sewer Repair Project Construction Update: December 19, 2014

Environmental Services is replacing about 7,000 feet of public sewer pipes in the Kenton area that are between 80 and 90 years old and failing due to age. The work includes repairing or replacing about 2,500 feet of existing service laterals that connect houses and businesses from the curb to the public sewer in the street. This project will increase sewer capacity and reduce the risks of street flooding and sewage releases to homes, businesses and streets.

Preparing for Construction on Denver and McClellan

Crews will begin work on N Denver and N McClellan shortly after the New Year and work will take a number of weeks. Surface impacts will be minimal and temporary asphalt patches will be put in place until weather and temperature allow for the street to be fully rehabilitated – with March set as the earliest likely period but it will be done before the Kenton Street Fair. Traffic flow on Denver North and Southbound will be maintained throughout the project, but McClellan (to the East and West of Denver) will be “Local Access only”. Sidewalks will remain open, but the crosswalk in front of Kenton Station will be closed. There will be some parking restrictions, especially along McClellan and limited on Denver. No equipment will remain on Denver overnight.


Below is the anticipated construction schedule for the next three weeks.  This schedule is subject to change due to a variety of factors, including underground conditions, weather, subcontractor schedules and availability of materials.  As the contractor completes construction on each street, work crews apply a temporary asphalt patch. They will return at a later date to apply permanent paving.

No work will be conducted between December 24th and January 4th in recognition of the holidays. Most construction equipment will be removed from the neighborhood during the holidays to improve parking and access during the two weeks.

Week December 22:

  • N Watts (between Brandon and Delaware) – open trench lateral replacement
  • N Schofield (between Brandon and Delaware) – open trench lateral replacement

 Week of December 29:


 Week of January 5:

  • N McClellan (between Denver and Brandon) – gas line relocation. Staging, pipe layout and open cuts in street at points of entry
  • N Schofield (between Brandon and Delaware) – mainline replacement through open trench construction
  • N Watts (between Brandon and Delaware) – lateral replacement through open trench construction

Construction Methods

The city's contractor is using a combination of open trench construction, cured-in-place-pipe lining, and pipe bursting. Go to for more information about sewer construction methods.

Night Work at Several Locations

The Portland Noise Control Office granted Environmental Services a noise variance for nighttime construction at several locations in this project (see map below).

A city inspector will be on-site during this night work. To report concerns during night work, please call the on-site hotline at 503-823-8458. You may also call the Portland Noise Control Office at 503-823-7350 or email

N Interstate Avenue and N Russet Street

Construction in the intersection of N Interstate Avenue and N Russet Street will occur from 10:00 p.m. to 6:00 a.m. Monday through Saturday and should take no more than five days to complete. Businesses and residents in the construction area will be notified in advance of this night work.

The city’s contractor will excavate a trench to replace the public sewer pipe. The contractor will use heavy equipment to excavate and restore the pavement, and temporary lighting for the work area at night. The southbound travel lane of N Interstate Avenue will be closed and traffic re-routed during construction hours.

Cured-in-place Pipe Lining Locations

The contractor will use cured-in-place pipe lining (CIPP) to repair several sewers. Work crews may install lining at night at some locations because of the size of the pipe. Work at each location should take no more than a few days. People who live and work near a CIPP repair project can sometimes smell a chemical odor during pipe-lining. The odor is from the chemical styrene, which is in the resin liner installed inside the pipe. The odor dissipates quickly once the installation process is complete. The amount of airborne styrene the repair process produces is not a human health risk. Go to for more information about CIPP construction.

Project Area Map

The map below shows the location of pipes we will repair or replace. There may be temporary traffic controls, construction signage or increased traffic volume and parking on nearby streets.

Kenton Sewer Repair Map

What to Expect during Construction

  • Construction creates noise, vibration and dust and disrupts normal neighborhood activity.
  • Typical construction hours will be 7:00 a.m. to 6:00 p.m. Monday through Friday. If needed, the contractor may work the same hours on Saturday. The contractor will work at night to complete the cured-in-place pipe lining on larger pipes in several locations (see map). One location will require nighttime work to complete the open trench sewer repair. To minimize daytime traffic disturbance on N Interstate Avenue, sewer construction in the intersection of N Russet Street and N Interstate Avenue will require night work for no more than five days. We will notify residents in advance of night work.
  • Please stay clear of all construction activities and keep children, pets and vehicles out of construction areas.
  • On-street parking in or near the work area may be limited. Please observe no parking signs.
  • Equipment and materials may be stored on nearby streets overnight.
  • The contractor will maintain local access on streets, but you should expect delays. In some cases, construction activities may impact normal use of your driveway.
  • Sewer construction generally occurs in the street. However, in a few areas the contractor will have to cut into sidewalks and driveway edges then restore the areas. Construction may also affect the planting strip, the area between the curb and sidewalk. We will notify property owners where this may occur.
  • During construction, the city’s contractor will use by-pass pumps to maintain sewer service. If a short, temporary sewer service shut-off is necessary to relocate a line, the contractor will notify property owners in advance.
  • Construction near an individual property could last a few weeks. This may seem longer where the work extends on the same street for a block or more. Sewer construction has many phases, and there may be periods of inactivity between construction phases at each site.
  • A city inspector will be on-site during work hours and may be able to assist you with concerns. Inspectors wear a hard hat and a safety vest with “City of Portland” on the back.

For More Information

To report concerns during night work, please call the on-site hotline at 503-823-8458. You may also call Portland Noise Control Office at 503-823-7350 or email If you have other questions about the project, contact Amy Higgs at 503-975-7073 or To receive regular email updates about this project, please send an email to Amy with “Kenton” in the subject line.