Environmental Services will begin construction in summer 2014 on a project to repair about 20,000 feet of deteriorating sewer pipes that are failing due to age. There will be construction at multiple sites in southwest, north, northeast and southeast Portland. The work will include repairing or replacing manholes, storm drains, and sewer service laterals that connect homes and businesses to public sewer pipes.
This project will protect public health and the environment by reducing the possibility of costly breaks, leaks, blockages and sewage releases to homes, businesses and streets. Construction will begin this summer and is scheduled to be complete in winter 2015.
The city’s contractor will make most of the repairs using the cured-in-place pipe-lining (CIPP) process and open trench excavation. CIPP is a trenchless technology that involves inserting a flexible resin liner that adheres to the inside of the pipe. Hot water or steam circulated through the pipe hardens the liner and gives the pipe a new interior surface. Workers access the pipe from the surface through a manhole, which reduces the need for excavation and minimizes surface disruption.
The contractor will excavate trenches to replace lateral connections to homes, manholes and storm drains, and will use open trench construction to complete work at the SW 1st and Madison location.
What to Expect During Construction
- Construction crews will do most of the sewer lining work through manholes in the streets.
- Typical work hours will be 7:00 a.m. to 6:00 p.m. Monday through Friday. The contractor can also choose to work on Saturdays if necessary.
- Roads will be closed to through traffic, but local residents will have access from one direction. You may experience delays.
- If work is right at your driveway and you have to use your vehicle, you will need to move it before the work starts.
- Preparation and restoration will take a couple of days to complete but the pipe lining process should only take one day at each location.
- You may notice an odor during the pipe lining process but it will dissipate quickly.
- There will be night work at some locations. We will notify residents in advance of night work.
- The contractor will excavate trenches to replace lateral connections to the curb or right-of-way.
- On-street parking in or near the work area will be prohibited during work hours.
- Equipment and materials may be stored on nearby streets overnight.
- A city construction inspector will be on-site during work hours, and may be able to assist you with construction concerns. Inspectors typically wear a green safety vest and hard hat.Let us know if you have concerns such as business operations, disability issues or medical deliveries.