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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

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NE 29th and Sandy Sewer Repair Project

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The City of Portland’s Bureau of Environmental Services is continuing our work to repair and replace critical sewer and stormwater infrastructure. Environmental Services will continue to provide information and updates on construction schedules and activities during the COVID-19 emergency. 

Updated August 11, 2020

Environmental Services continues a project to repair about 160 feet of large public sewer pipe in NE 29th Ave between NE Sandy Boulevard and Sullivan Street. This section of sewer pipe is showing signs of deterioration due to age.  


Please keep in mind that schedules may change due to a variety of factors such as weather and subcontractor availability. 

Phase 1: Open Trench Work

Crews have completed the majority of open trench excavation to install a large manhole at the intersection of NE 29th Avenue and Sullivan Street. A steel plate will remain over the excavation until Phase 2 is complete. Go to to learn more about open trench excavation.

Phase 2: Cured-in-Place Pipe-Lining

Work to repair a larger diameter sewer pipe under NE 29th Avenue between Sullivan Street and Sandy Boulevard using CIPP is on hold until materials on order for this phase arrive. This work was originally expected to occur in Augustbut now is expected to occur in September. Go to to learn more about CIPP.

 project map

Traffic Impacts

Local traffic on Sullivan Street will be maintained, but the intersection of NE 29th and Sullivan will be hard closed during installation of the manhole during Phase 1. Cars using Sullivan Street for parking or deliveries should be prepared to enter and exit from 30th Avenue and Sandy Boulevard.    

Construction Methods  

This project will include both trenchless and trench excavation construction methods: 

  • Cured-in-Place-Pipe Lining (CIPP) to repair the main sewer pipe
  • Sawcutting and jackhammering to install cleanouts in some locations 
  • Digging trenches to replace some sewer service lateral connections to buildings 

Go to to learn more

What to Expect During Construction

You can expect the following activities and impacts during construction:

  • Expect traffic delays in and near the  work zone.
  • On-street parking will be temporarily removed in and near the work zone during work hours.
  • Equipment and materials may be stored on streets overnight.
  • Sewer, water, and other utilities are expected to remain in service during construction.
  • Construction creates noise, vibration, and dust and may disrupt normal neighborhood activity.

Night Work 

Most work will be completed during regular work hours from 7 a.m. to 6 p.m. Monday through Friday, and Saturdays if needed. However, crews will need to work one night shift in order to complete mainline sewer pipe repairs using CIPP, which requires inserting a flexible liner inside the old pipe, inflating the liner, and exposing it to heat or ultraviolet light (UV) to “cure” the pipe.   

Due to the large diameter of the pipe being repaired near you, it will take about 16 hours or more to complete the CIPP process, allow the liner to fully cure, and to clean up. This will require working from morning into the evening and possibly overnight. You will be notified if additional night shifts are needed.   

Stay Informed 

Environmental Services is working directly with adjacent properties affected by this project. Community outreach staff will listen to your suggestions and respond to your concerns: 

We encourage you to support local businesses during this difficult time. You can still shop online for goods and gift certificates, and many stores and restaurants are open and accessible for pickup or delivery of food and drink.