Citywide Sump Repair and Replacement

Sewer and Stormwater
Environmental Services is removing aging sumps throughout the City and replacing them with new sumps and new sedimentation manholes. This work will help control stormwater runoff and sewer backups.
Construction began in April 2023 and will continue through April 2026. Check the webpage for regular project updates.
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What's Happening Now

Construction on three sump and sedimentation maintenance holes is currently taking place and will take up to three months to complete. Design will continue for other locations throughout the City.

Construction Locations:

  • NE 84th and Skidmore
  • SE Clay Court. and SE Millmain Drive
  • SE Millmain Dr near SE 154th Avenue

This new infrastructure will help control stormwater runoff during heavy rain events, improve water quality, and help prevent basement and sewer backups.

Construction Schedule

Work is completed on NE 84th and Skidmore, crews will move to SE Clay Court and Millmain Drive.

Rest of the Week

  • Crews to complete repairs at SE Millmain Drive and 154th Avenue. 
  • Crews will finalize installation of new sump and sedimentation maintenance holes at SE Clay Court and Millmain Drive.
  • Crews will be prepping and paving at NE 84th and Skidmore. This work may extend into the next week. 

Week of June 24

  • Crews will be prepping and paving all other locations for final paving restoration.

Week of July 1

  • No construction is anticipated this week and will resume later in the month. Please note – some City of Portland offices and facilities will be closed on July 4th in observance of the Independence Day Holiday.

Construction will temporarily restrict some travel lanes and sidewalk crossings in work zones, remove on-street parking, and create traffic delays.

Construction will occur during work hours between 7 a.m. and 6 p.m., Monday through Friday. 

All work is weather-dependent and subject to change.

See the map on the project webpage for locations of where we have completed construction and where construction is coming in the near future. 

Remote Media URL

What are Sumps and Sedimentation Maintenance Holes?

A sump maintenance hole (sump) is a large, concrete cylinder installed under a street and that is connected to a storm drain and a separate tank, called a sedimentation maintenance hole, that filters out garbage and pollutants.

Environmental Services owns, operates, and maintains 8,625 sumps and 6,352 associated sedimentation maintenance holes all over the city.

For more information about sump maintenance holes and other ways in which BES manages stormwater, visit the How We Manage Stormwater webpage.

Infographic of Sedimentation and Sump Maintenance Holes

We Want to Hear from You

We would like to hear from you about special events, school activities, and community services in the neighborhood that you think may be impacted by this project. Also, we want to know if you have any concerns related to business operations, disability or mobility issues, medical or business deliveries. Your input will help us minimize construction impacts to your neighborhood. 

Sewer Emergency: In the event of a sewer backup or basement flooding, call the Maintenance hotline immediately at 503-823-1700. It is staffed all hours and all days, 24/7.

Construction Methods

The contractor will require excavating trenches, accessing manholes, digging pits to complete sump repairs and replacements. 

  • Open Trench Excavation: The contractor excavates a trench for sump repairs and replacements, and then fills in the trench and restores the disturbed pavement. 

What to Expect

You can expect the following activities and impacts during construction: 

A Safe Work Site: We want you to be safe around the work site. Please keep children, pets, bikes, cars, and trucks away from the tools, machines, supplies, and construction workers. 

Noise, Vibration, and Dust: Construction creates noise, vibration, and dust and disrupts normal neighborhood activity. 

Traffic Delays: The work will slow down traffic in your neighborhood. Please read the traffic signs and follow directions from the workers with flags. 

Access to Your Home or Business: You will be able to go to your home or business, but you may not be able to park as close as you would like. We will try to make sure driveways and parking lot entrances stay open. Crew members can help you safely enter or exit your driveway or business parking lot.   

Parking Restrictions: We want you to be safe, so you might not be able to park your car next to work spaces, equipment, or materials. If crews are working directly in front of your home or a business, you may need to park in another place. 

Equipment Storage: Sometimes we will leave tools, machines, and supplies on your street overnight.  

Maintained Service: You can still use sewer, water, and other services while we work on your street. 

Work Hours: Work hours are 7 a.m. to 6 p.m., Monday through Friday. Sometimes we work on Saturdays from 7 a.m. to 6 p.m. 

Schedule Changes and Inactivity: Work schedules can change for many reasons like weather, traffic, and problems with tools, machines, or supplies. Sometimes we need to stop between different types of work and start again later. 

Sign Up for Updates

Environmental Services is committed to keeping residents and businesses informed. Sign up for regular project updates through our free GovDelivery subscription service. These updates are the best way to stay informed about what’s happening and what to expect. You can also sign up for bulletins on other projects and topics.