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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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Grant Park Sewer Repair

January 22, 2015 UPDATE

The Grant Park Sewer Repair Project will replace or repair about 11,500 feet of public sewer pipes that are between 89 and 104 years old and failing due to age. The project will increase sewer capacity and reduce the risks of street flooding and sewage releases to homes, businesses and streets. Construction should be completed by March 2015.

Current Construction Activities
Two crews are working on sewer and lateral pipe repairs and restoration in the area. Please be aware that construction schedules are subject to change due to conditions underground, weather, traffic, subcontractor schedules and availability of materials. As the contractor uses different equipment or specialized crews at each site, you will notice several work phases.


The city’s contractor is allowed to but is typically choosing not to work on Fridays or Saturdays. However, they will be working Monday through Friday January 19-23 on cured-in-place-pipe lining, read below for locations.

Sewer repairs underway or upcoming:

Several areas of cured-in-place-pipe lining have been scheduled for the week of January 19th. Residents near the lining activity may notice a chemical odor and will be asked to limit water use for the day. Neighbors will see boiler trucks and crews at manholes, but there is no digging in the street. More information can be found below in this email. Residents will receive a construction notice a day or two in advance of pipe lining. The following locations are planned throughout the week, one day per location:

    • NE Hancock Street between NE 33rd and NE 32nd avenues, adjacent to Beverly Cleary School while school is closed for the MLK Jr holiday
  • NE Schuyler Street between NE 32nd and NE 30th avenues
  • NE Schuyler Street between west side of QFC store and NE 32nd Avenue
  • NE Schuyler Street between NE 33rd Avenue and QFC store

Sewer pipe repair is underway on NE 29th Avenue between NE Knott and Stanton streets.

Concrete restoration on spot repair areas is underway, or starting soon, dependent on weather, at the following locations:

    • NE 32nd Place between NE Thompson and just south of NE Brazee was just completed and traffic signs are being cleaned up.
    • NE 32nd Court between NE Thompson and just south of NE Knott will begin soon. Watch for one-way traffic signage. Crews will also return for  cured-in-place-pipe lining, schedule to be determined.
    • NE 26th Avenue between NE Thompson and NE Brazee will begin soon this week. Watch for one-way traffic signage.

Asphalt and concrete road restoration will continue to be scheduled, dependent on weather. Concrete restoration is happening in driveways and on concrete streets that were cut while repairing pipes. Concrete must reach a specific hardness before vehicles can be allowed to drive on it. This will result in some coned off driveways, or streets being closed except for local access only. Several streets will be reduced temporarily to one-way during this restoration work.

Access to school:

  • The parking lot on NE Hancock Street will continue to be accessible for staff, school deliveries, and student drop off and pick up.
  • Bus loading/unloading areas will not change.
  • Parking on NE Hancock Street will not be available. Families who drive should plan to enter the parking lot.
  • Families who are able to walk are encouraged to do so.

School work map

What to Expect During Construction

  • Work hours are 7:00 a.m. to 6:00 p.m. Monday through Friday, but the contractor may schedule work during the same hours on Saturdays.
  • Construction will create noise, vibration and dust and will disrupt normal neighborhood activity.
  • Minor tree trimming may occur in the public right-of-way.
  • Traffic control signs will be set up, and flaggers may direct traffic on higher-volume streets.
  • On-street parking in or near active work areas is prohibited during construction hours. Please plan to move your vehicle by 7:00 a.m. in work zones.
  • Equipment and materials may be stored on nearby streets overnight.
  • There may be periods of inactivity between construction phases.
  • A city inspector will be on-site during work hours and may be able to assist you with construction concerns. Inspectors typically wear a hard hat and a green City of Portland safety vest.
  • Please stay clear of all construction activities and keep children and pets out of construction areas.
  • You should receive a doorhanger notice a few days before work starts on your street.
  • Keep in mind schedules are always subject to changes due to weather, supply availability, or other issues.


Grant Park Sewer Repair Project Map

Sewer Construction Methods

The city is using a combination of open trench construction, cured-in-place-pipe lining (CIPP), and pipe bursting for this project. The contractor may use more than one construction method in some areas. For example, the contractor may use CIPP on the main public sewer pipe and open trench construction to repair or replace laterals that connect private sewers from the curb to the public sewer in the street.

Open trench installation is done in phases:

  • Saw cut pavement along the width of the trench
  • Remove pavement and existing material
  • Install public sewer pipe in the street
  • Backfill trench with sand or gravel
  • Replace laterals that connect private sewers to the system (from the curb to the street)
  • Restore surface temporarily with an asphalt patch
  • Complete final paving
  • Restore other areas disturbed by construction, such as sidewalks, driveway aprons and planting strips

Cured-in-place-pipe lining (CIPP) doesn’t require digging a trench. Work crews access the sewer from manholes to insert a flexible liner inside the old pipe. Hot water or steam inflates and cures the liner, which gradually hardens to form a rigid, smooth surface that seals cracks and restores the pipe to near-new condition. People who live and work near a CIPP repair project sometimes smell a chemical odor during the pipe-lining work. 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 produced is not a human health risk.

Pipe bursting involves digging an access pit and inserting a bursting head into the existing sewer line. The bursting head breaks the old pipe apart and pulls the new pipe into place behind it. Construction crews retrieve the bursting head from a second access pit.

Thank you in advance for your cooperation during this project. Please let us know if you have concerns such as business operations, disability issues, or medical or business deliveries. As always, we’ll strive to provide quick response to your concerns, minimal disruption near your residence or business, and open and clear communication with you throughout the project.


For More Information

Contact Kristen Kibler with JLA Public Involvement  at 503-235-5881, extension 106, if you have concerns, such as maintaining driveway access, business operations, or medical deliveries, during construction.

Email Kristen  with "Grant Park" in the subject line to receive project updates by email. During construction, we will be sending regular email updates to keep you posted about the schedulem, construction activities, possible traffic detours and delays, parking restrictions and other impacts.