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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

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

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Alder Shaft

Updated February 17, 2017

This spring, Environmental Services will install a valve and underground vault near the intersection of SE 3rd Avenue and Alder Street to reduce the rare build-up of air pressure in the public sewer system that can occur during intense rainstorms. The valve will help to ensure the sewer system operates safely and efficiently.

Schedule and Construction Activities

The project is located near the busy intersection of SE 3rd and Alder. Construction is anticipated to take less than two weeks and occur late May 2017. This includes time to set up, install piping and structures, and then restore pavement disturbed during construction. 

Alder Shaft project mapCrews will work at the manhole in the street and install piping that connects to a new underground pressure valve and vault structure. There will be temporary traffic restrictions, such as reduced lanes or assistance from flaggers. Parking will be temporarily removed around the work area during construction.

Environmental Services has selected a contractor, and they are preparing for construction. More detailed information will be available this spring. 

Coordination with Businesses

In the coming weeks, we will revisit businesses nearest to the project area to discuss their needs during construction (e.g., delivery and access). If we haven’t dropped by your location and you’d like to talk with us, please contact us to schedule a visit. Thank you for your cooperation during this important sewer project.

For more information

If you would like more information about the project or have questions and concerns you’d like to discuss, please call or email:

Cheryl Kuck
Community Outreach
Phone: 503-823-7898

Please include your name, property address and project name (Alder Shaft) in your voicemail and email so we can provide you more details about what to expect in front of your property. Also, please write "Alder Shaft" in the subject line of your email. Click SIGN UP! to sign up for periodic email updates.

Other Projects in Your Area

Environmental Services maintains and improves the City’s sewer infrastructure. The SE Alder Pump Station Upgrade Project will improve reliability, increase pumping capacity and help prevent sewage releases to protect public health, water quality and the environment. For more information about that project and its construction schedule, visit

Environmental Services is also planning repairs to an aging sewer line in poor condition along SE 3rd Avenue south of SE Alder Street. For more information about that project and its construction schedule, visit