1120 SW 5th Avenue, Room 1000, Portland, OR 97204
Environmental Services is repairing about 7,400 feet of public sewer pipes at various eastside locations. Most of the pipes are over 80 years old and deteriorating due to age. This project will protect the public and the environment by reducing the possibility of costly breaks, leaks, blockages and sewage releases to homes, businesses and streets.
The city’s contractor will repair pipes using cured-in-place-pipe lining, which will require minimal open trench excavation. 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. All manhole, lateral connections and stormwater inlets will require open trench excavation. For more details about cured-in-place-pipe lining and open trench excavation, click here.
Typically, the lining process takes about six to eight hours and can be completed during the day. However, several locations in this project have larger diameter pipes where the lining process will take longer or where traffic safety requires that the work be done at night.
If you have questions about the project, contact Matt Gough at 503-823-5352 or by email.