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Label:
Sewer and stormwater
Label:
Active
This project will repair two pressurized pipes (force mains) that carry sanitary sewer flows from the Inverness Pump Station to the Columbia Boulevard Treatment Plant. These pipes are aging and need to be repaired to protect public health and the environment.
Construction for this project is expected in the summer of 2026 and should take about 24 months to complete.
The pressurized pipe (force main) system that connects the Inverness Pump Station to the treatment plant includes two pressurized force main lines:
- An 8.7 mile long pipe that is 24 inches in diameter. It was installed in the 1980's.
- A 10.6 mile long pipe with a diameter that ranges from 36 inches to 20 inches in diameter. It was installed in the late 1990's.
Because of the high-pressure environment of the pipes, and the caustic nature of the flows they carry, force mains have a shorter service life than typical gravity flow sewer pipes. Some sections of the two force mains that serve the Inverness Pump Station are in poor, or unknown, condition. This project will inspect these two important force mains, and then conduct necessary repairs to help reduce the risk of failures in the Inverness Force Main system
Project Location
The Inverness Pump Station is in Northeast Portland north of I-84 and east of I-205, slightly north of the Columbia Slough and south of the Columbia River. It is in the Parkrose Neighborhood, next door to the Multnomah County Inverness Jail. Two force mains (pressurized pipes) carry sanitary sewer flows from the pump station to the Columbia Boulevard Wastewater Treatment Plant (CBWTP).
Link to text description of the Inverness Pump Station Force Main and Outfall Project Map.
What's Happening Now?
Environmental Services Staff are currently in the project development phase of this project. Staff are working throughout the project area to identify the condition of the force mains and prioritize areas that need repair. This summer, staff will begin to construct repair solutions for each area that needs rehabilitation. Design work will continue alongside some construction activities until the summer of 2027. Construction is expected to continue until the fall of 2028.
We Want To Hear From You
We would like to hear from you about special events, school activities, and community services in your neighborhood you think may be impacted by this project. Also, we want to know if you have any concerns related to business operations, disability or mobility issues, medical or business deliveries, and proposed night work. Your input will help us minimize the impact to your neighborhood during construction.
Sign Up For Project Updates
Environmental Services will inform residents and businesses about project activities and respond to questions and concerns in a timely manner. The following resources will help you stay informed and report concerns:
- Project Updates: To receive email or text message updates for this project, sign up now at Sign Up for BES Project Updates. Updates provided through our free GovDelivery subscription service are the best way to stay informed about what's happening and what to expect. You can also sign up for bulletins on other projects and topics
- Questions: Contact Aaron Abrams at Aaron.Abrams@portlandoregon.gov or call 503-823-2827.
- Sewer Emergency: Call 503-823-1700 immediately. The City Maintenance hotline is staffed all hours, all days (24/7).