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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

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UPDATED: Traffic Advisory: Sewer improvements to close lane on Hwy 43 at SW Terwilliger beginning April 9 for up to two months

UPDATE (May 17) - Crews to pave Highway 43 between Terwilliger and E Street

UPDATE (April 27, 2017) - Crews completed installation of the manhole ahead of schedule. The next and final step in this project is paving and restriping lanes to their preconstruction configuration.

UPDATE (April 6, 2017) - We continue to look for a dry weather window to begin this project. The next possible start date is April 9.

UPDATE (March 31, 2017)  - The schedule for this work has changed. This project is now scheduled to begin at 10 p.m. Tuesday April 4, 2017. Any additional schedule updates will be posted to Twitter @BESPortland with the hashtags: #hwy43 and #pdxtraffic

(March 29, 2017) – Environmental Services advises the traveling public that a sewer construction project will require lane restrictions on Highway 43 at SW Terwilliger Boulevard near the entry way to Lake Oswego beginning 10 p.m. Friday, March 31, and continuing 24 hours a day for up to two months. One lane will be open in each direction at all times.

The traveling public is advised to expect some delays, to travel cautiously and to observe the lane closures and signage.

The lane restrictions will allow crews to install two manholes and about 80 feet of pipe under Highway 43 between SW Terwilliger Blvd and E Avenue. The work is part of the SW Terwilliger Sewer Project to improve wastewater collection in the area and to protect water quality, public health, and our environment.

For additional information, including progress photos and additional maps, visit

The Bureau of Environmental Services works with Portland residents and businesses to protect water quality, public health, and the environment through wastewater collection and treatment, sewer construction and maintenance, stormwater management, and stream and watershed restoration. Follow on Twitter @besportland