1120 SW 5th Avenue, Room 1000, Portland, OR 97204
Environmental Services has nearly completed design work for an inner southeast Portland repair of a deep interceptor sewer line that is deteriorating due to age. The repairs will extend the life of the sewer and protect public health, water quality and the environment. The city built the large-diameter Southeast Interceptor in 1954. It runs parallel to the Willamette River under inner southeast neighborhoods and is between 5 to 6 feet wide and 25 to 54 feet below the surface.
Two segments of the Southeast Interceptor require repairs. For the project map, click here.
The project's final design work will continue through late fall 2016. Construction is currently anticipated to begin as early as May 2017 and continue for up to a year.
Based on information collected about the condition of the Interceptor, the project team has selected a repair technology that can be completed from inside the sewer line and will not likely require digging trenches in the roadway. Accessing the sewer line through manholes will require temporary lane closures, which will require traffic control and construction signage. These lane closures may cause additional traffic congestion during construction work periods.
For traffic safety and to minimize traffic congestion, the city is proposing to do night work at all but one of the project work zones. Portland noise code allows construction from 7 a.m. to 6 p.m. Monday through Saturday. Work after 6 p.m. and before 7 a.m. and all hours on Sundays requires a noise variance from the Portland Noise Office.
Because construction crews will work past 6 p.m. and on weekends, Environmental Services will apply for a Noise Variance.
Based on information collected about the condition of the Interceptor, the project team has selected a repair technology that can be completed from inside the sewer line and will not likely require digging trenches in the roadway. The project work zones will be located at manholes (see map) and will move as the project segments are completed, with work at each manhole lasting up to two months. Crews may be working at multiple locations at the same time.
Accessing the sewer line through manholes will require temporary lane closures, which will require traffic control and construction signage. Where needed, traffic will be routed around the worksites. Traffic controls (cones, flaggers, temporary barriers, etc.) will be in place only during work periods and removed daily.
The manhole access locations will have adjacent staging areas for materials and construction vehicles. Equipment that generates noise will include sewer cleaning trucks, compressors, generators, ventilation fans, and other trucks and related equipment. The night work will also require lighting of the project area.
Your comments regarding the proposed night work are valuable and you can submit them to the Portland Noise Office by letter, email or telephone. Please submit your comments by November 30 to:
Portland Noise Office
1221 SW 4th Avenue, Suite 110
Portland, OR 97204
Email the noise office at firstname.lastname@example.org
If you have questions, contact Cheryl Kuck by email or by phone at 503-823-7898. In your email and voicemail messages, please provide your property address and the project name (Southeast Interceptor).
To be added to the project's email update list, click on the SIGN UP! button above or email Cheryl with "SEI" in the subject line. If you include your address, we may be able to provide you more details on what to expect near your property.
Southeast Interceptor Project maps
Scheduled public meetings to discuss project details
Southeast Interceptor Project newsletters
Overview of sewer construction methods