Environmental Services will soon begin construction on a project to repair about 800 feet of public sewer pipes in downtown Portland that are 100 to 140 years old and in deteriorating condition. The sewer pipes are showing signs of cracks, breaks, holes, offset pipe connections, and obstructions, putting the pipes at risk of structural failure. Urgent repairs at three locations shown on the map below will protect the public and the environment by reducing the possibility of sewage releases to buildings and streets.
Construction is expected to begin mid-March and may continue through May 2018. The timeline is subject to change due to weather, availability of materials, subcontractor schedules, and other circumstances.
Repairs will be made in three locations (see map). The project will include both trench excavation and trenchless construction methods. The main line sewer pipes will be lined. Pipe lining will occur after 6 p.m. and before 7 a.m.
The spot repair in SW Oak Street will require digging a pit to relocate a water line and replace a section of the sewer pipe. This work will occur during the day.
The project may also require some sawcutting and jackhammering to install sewer cleanouts in multiple locations. This noisier work will be done during the day.