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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

MAILING ADDRESS: 1120 SW 5th Ave, Room 1000, Portland, OR 97204

More Contact Info

NW Flanders Street and 11th Avenue Sewer Repair Project

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Updated July 24, 2017

Construction is complete on an Environmental Services a project to repair about 250 feet of sewer pipe in NW Flanders Street between NW 12th and 11th Avenues (see map). The sewer was constructed in 1916 and shows signs of wear and tear, cracks, tree root intrusion and structural deformation due to stresses on the pipe. This project will protect public health, property and the environment, and reduce the possibility of sewage releases into streets, homes and businesses. 

Map of work area


Construction began April 11, and was completed in July.

For More Information

Contact Debbie Caselton by phone at 503-823-2831 or send Debbie an email with “NWFlanders” in the subject line. Please let us know if you have concerns such as business operations, disability issues, medical or business deliveries, or other concerns about how this project might affect your property. If you provide your property address, we may be able to provide you details about what to expect in construction at your property.

Sign up now for periodic email updates by clicking the SIGN UP! button above. We'll keep you posted about the construction schedule, traffic and parking controls, and construction activities as the project evolves.


Developments of Note

Construction is underway

Pre-Construction Activities

Learn about surveying and tree trimming work before construction

Construction Methods

Learn about open trench excavation and pipe lining

Traffic Control and What to Expect

Learn about traffic restrictions and what to expect during construction