South Corbett and Carolina Sewer Repair Project

Sewer and Stormwater
Environmental Services is designing a sewer project to replace 250 feet of aging pipes near private properties within the Corbett neighborhood. This project will protect public health and the environment by reducing the possibility of sewage releases to homes, businesses, and streets.
Construction is anticipated to start in early-Summer 2024 and will take up to four months to complete.
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The South Corbett and Carolina Sewer Repair Project is part of the Maintenance Capital Contract (MCC) program for Environmental Services. The urgent capacity project will install a new and appropriately sized mainline sewer system to reduce the risk of pipe collision, emergency repair, and to continue providing gravity sewer service in the area. 

The scope of the project is to repair the following:

  • Replace existing 98 feet of 18-inch clay pipe and 155 feet of 20-inch clay pipe in easements behind houses using CIPP thermal cure.
  • Active sewer laterals will be relined to the wye connection and those not plugged will be reinstated.
  • One maintenance hole will need to be raised to the surface to access it to pull the liner through.
  • Tap root and heavy root pruning will be needed and possibly removal and replacement of segments of fences on four properties.

Project Area

The project area is located at the intersection of South Corbett Avenue and South Carolina Street, across from the Carolina Pump Station.

This is a simplified map for the South Corbett and Carolina Sewer Repair Project.

General Schedule

Construction is anticipated to begin early-June 2024 and will be completed in October 2024.  

What's Happening Now?

Project designers have surpassed the 90% design milestone. The project’s final design should be completed soon. During this last phase of the project design process, crews will be in the neighborhood conducting additional investigations to collect information to help determine all repairs needed.

Pre-construction Activities

Before the actual sewer pipe repair work begins, crews will be in the neighborhood completing various tasks to set up the work zones and prepare for major construction. Pre-construction activities typically occur over time rather than all at once.

These activities may include some or all listed below:

What to Expect During Construction

You can expect the following activities and impacts during construction:  

  • Noise, Vibration, and Dust: Construction creates noise, vibration, and dust. These activities may disrupt normal neighborhood activity.  
  • Equipment Storage: Construction equipment and materials may be stored on streets overnight. To ensure safety please keep all children, pets, and pedestrians away from work zones.
  • Restricted Parking: Little or no on‐street parking will be allowed in and near work zone, especially during work hours. On days when crews will be working in front of your house or nearby, please plan ahead. If you park your vehicle on the street, plan to move it off the street by 7 a.m. and return it at 6 p.m.  
  • Traffic Delays: Expect traffic delays in and near the work area. The contractor will develop detailed traffic control plans for each location. 
  • Pedestrian Access: If temporary crosswalk and sidewalk closures are necessary, signage will indicate the alternate way for pedestrians to proceed.  
  • Services Maintained: Sewer, water, and other utilities are expected to remain in service during construction.  
  • Garbage Pickup: Access to garbage and recycling bins for haulers will always be maintained.  
  • Schedule Changes and Inactivity:Construction schedules can change due to a variety of factors, including conditions underground, weather, traffic impacts, subcontractor schedules, and availability of materials. These same variables may cause periods of inactivity during construction phases. 

Construction Methods

Environmental Services will use the following construction method to make sewer repairs and raise one maintenance hole to the surface:

  • Cured-in-Place Pipe Lining (CIPP): The contractor inserts a flexible liner into the existing pipe through a maintenance hole. The lining material hardens to restore the interior without needing to dig big trenches.

Please visit the webpage to learn more details and access photos about sewer construction methods.

Proposed Night Work

To reduce public impacts and complete the work as quickly as possible, Environmental Services is proposing to work both days and nights. Daytime work hours will be between 7 a.m. and 6 p.m. Monday through Friday, and Saturdays as needed. Nighttime hours will be between 6 p.m. and 7 a.m. Work at project location may include several weeks to complete CIPP lining work.

CIPP lining will be done at night when levels of sewage and stormwater flows in the pipes are lower and less likely to compromise the lining. Equipment that will generate noise overnight will include vactor trucks (sewer cleaning trucks), light tower trucks, compressors, generators, pumps, and ventilation fans.

Submit Comments to Portland Noise Program

Portland noise code allows construction from 7 a.m. to 6 p.m. Monday through Saturday. Work after 6 p.m., before 7 a.m., and all hours on Sundays requires a noise variance from the Portland Noise Office. This project will apply for a noise variance to enable the contractor to work both days and nights. Your comments about the work proposal are valuable. 

Public is invited to submit all comments and questions before Wednesday, April 3, 2024.

The Noise Program is in the process of reviewing the noise variance application for this sewer project. To submit comments or questions, please email the Noise Program at or call 503-823-7350. The Noise Program operates on Monday, Wednesday, and Friday between 7:30 a.m. and 4 p.m. 

We Want to Hear from You

Environmental Services will inform residents and businesses about project activities and respond to questions and concerns in a timely manner. The following resources will help you stay informed and report concerns:

  • Project Webpage: For current details, please visit
  • Questions: Call the message line at 503-823-5759 or email city staff, stating your project of concern. Outreach staff will return your call by the next business day.
  • Sewer Emergency: In the event of a sewer backup or basement flooding, call the City Maintenance hotline immediately at 503-823-1700. It is staffed all hours and all days, 24/7.

Sign Up for Updates

Sign up for periodic email or text message updates for the South Corbett and Carolina Sewer Repair Project 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. 

This project will help protect the health of the Willamette River Watershed.