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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

SW Terwilliger Boulevard Sewer Project

Updated July 6, 2017

SW Terwilliger Boulevard is open to Highway 43 earlier than anticipated. You may see crews doing minor clean-up work and restoration, but the road is completely open to all traffic.

In December 2016, Environmental Services began construction on a project to install 7,600 feet of eight-inch sewer in SW Terwilliger Boulevard from SW Northgate Avenue to Highway 43. Originally, Environmental Services estimated that the work could take up to eight months, but the construction team now predicts work will be complete one month early, and SW Terwilliger will likely be open in July. The new Terwilliger sewer will connect to the 30-inch Tryon Interceptor sewer, which carries sewage to the Tryon Creek Wastewater Treatment Plant in Lake Oswego. This improvement to the wastewater collection system will help protect water quality, public health, and our environment.

For More Information

Contact Debbie Caselton at 503-823-2831 or email Debbie at with “Terwilliger” in the subject line.


Includes detour, project and trail maps