Skip to Main Content View Text-Only

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Room 1000, Portland, OR 97204

Tryon Creek Outfall Repair

Project Informationphoto of Tryon Creek outfall in need of repair

Environmental Services is designing a project to replace an outfall pipe that carries stormwater runoff from 24 acres in southwest Portland and from portions of Interstate 5. The 36-inch concrete pipe collects runoff near SW 35th Drive close to Barbur Boulevard and the freeway and discharges stormwater to Falling Creek, a Tryon Creek tributary.

Over the years, erosion has undercut the pipe where it drains to the creek. This project will replace the outfall pipe, stabilize slopes around and below the pipe, and replant the area with native vegetation.

Project Schedule

This project is scheduled for construction in August 2014 and will likely last for several weeks.

Traffic Control

Much of the work zone is off of the roadway. However, drivers in the area should note traffic control signs, respect speed limits and expect delays during construction. When necessary, flaggers will guide traffic through the work zone.

For More Information

With questions or for more information, please contact Becky Tillson at 503-823-2827 or To be added to an email update list, email Becky with “Tryon Outfall Project” in the subject line.