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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 Trunk

Updated June 22, 2017

This summer, Environmental Services will install a valve and underground vault at the intersection of SE 7th Avenue and Yamhill Street. The equipment will reduce the rare build-up of air pressure in the public sewer system that can occur during intense rainstorms. The project 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 7th and Yamhill. Construction is anticipated to begin as early as July 10 and take up to three weeks to complete. This includes time to set up, install piping and structures, and then restore pavement disturbed during construction. 

Alder Trunk 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.

What to Expect during Construction

You can expect the following activities and impacts with this sewer repair project:

  • Sewer construction creates noise, vibration, and dust and disrupts normal neighborhood activity.
  • Local access to all properties will be maintained.
  • You should expect temporary traffic restrictions, reduced lanes, and delays in and near the work area. Please observe traffic control signs and follow the directions of flaggers.
  • On-street parking will be temporarily removed in and near the work zones to create a safe work environment and to stage equipment and materials.
  • Some equipment and materials may be stored on your street or nearby streets overnight.
  • There may be periods of inactivity between construction phases due to a variety of factors including weather, subcontractor schedules, and availability of materials.
  • A city inspector will be on-site during work hours and may be able to assist you with an immediate need during construction.
  • Sewer, water, and other utilities will remain in service during construction.

For more information

If you have concerns about business operation, disability issues, medical or business deliveries, or other questions, please call or email:

Cheryl Kuck
Community Outreach
Phone: 503-823-7898

Please include your name, property address, and project name (Alder Trunk) 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 Trunk" 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 scheduled to begin in August 2017, visit