MAILING ADDRESS: 1120 SW 5th Ave, Room 1000, Portland, OR 97204
In the spring of 2017, Environmental Services completed the first phase of sewer repairs on public sewer pipes in SW Yamhill and SW Morrison streets in downtown Portland. In the fall of 2018, Environmental Services completed a second phase of work to repair public sewer pipes that were in deteriorating condition.
Phase Three sewer repairs are expected to be scheduled for sometime in 2019. Originally scheduled for the fall of 2018, the repairs had to be postponed due to several factors, including the challenging nature of the pipes, difficult access issues, and availability of subcontractors and materials.
Repairs to the 100 to 140-year-old sewer pipes will protect the public and the environment by reducing the possibility of sewage releases to buildings and streets.
This map shows the sewer repair locations for the SW Yamhill-Morrison Sewer Repair Project.
Repairs to the remaining pipes (labeled as FALL 2018 on this map) will restart sometime in 2019. Environmental Services will notify property owners, businesses, and residents in the project area when the work is scheduled.
Repairs at each location should take less than a week, with a combination of daytime and nighttime work approved by the Portland Noise Office. TriMet light rail service will not be affected.
Daytime work includes videotaping the pipe, cleaning the pipe, and doing small repairs. Crews also set up the bypass service that provides uninterrupted sewer service to all buildings. The pipe lining work begins in the early evening and extends into the next morning as the new lining hardens in place. Then crews reinstate the service laterals to buildings and remove the bypass.
Traffic control areas and bypass set-up usually extend beyond the pipe repair locations, which can affect traffic on neighboring streets slightly.
The Portland Noise Office granted Environmental Services a Noise Variance to enable the city's contractor to work at night to repair the public sewer pipes at these locations. Pipe lining work takes place after 6 p.m. and before 7 a.m. to reduce traffic congestion, create a safer work zone, and allow time for the new sewer pipe lining to harden. Some work occurs during the day both before and after the pipe lining. The city's contractor may work on weekends as needed.
To repair the public sewer in the locations shown on the map, the city employs a process called Cured-in-Place-Pipe Lining (CIPP). Work crews access the sewer from manholes to insert a flexible liner inside the old pipe. Steam or ultraviolet light 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 can 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 by the lining process is not expected to cause health issues for workers or the public. Click here for more details about CIPP.
Vactor trucks are in the area to operate vacuum pumps necessary to clean the pipes prior to the lining and maintain sewer service during the lining. Vactor trucks generate noise and can be in place for up to several hours at a time.
The CIPP sewer pipe lining process occurs in phases:
The CIPP work requires dry conditions to complete, so the schedule may fluctuate due to weather, conditions underground, traffic impacts, subcontractor schedules, and availability of materials.
You can expect traffic delays, temporary lane closures, on-street parking removal, pedestrian detours, nighttime street closures, and flaggers as needed in the work zones. MAX light rail service will not be affected.
If you have a question or concern, call the project hotline at 503-823-5315, leave a message, and your call will be returned by the next business day.
If you have a concern or question about a pipe repair near you, please be sure to include your name, business name, property address, phone number, and project name (SW Yamhill-Morrison) in your voicemail and email so we can provide you more details about what to expect in front of your property. Also, please write "SW Yamhill-Morrison" in the subject line of your email.
Environmental Services coordinates with multiple agencies to schedule and complete construction, minimize disruptions, and help people get to where they are going. Learn about other projects that affect the Central Business District at www.MovePDX.net. To avoid circling around construction to find parking, the City recommends you use SmartPark garages.
Including the project description, map and schedule
Check out current and previous communications about the project