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Hillsdale North Sewer Project

Sewer and Stormwater
Environmental Services is in the design stage of the Hillsdale North Sewer Project. This project will repair or replace approximately 8,571 feet of aging public sewer pipes throughout your neighborhood. Taking these actions now will help protect public health and the environment.
Construction is anticipated to begin in the Spring or Summer of 2024 and may take a year to complete.
On this Page

Project Area

Simplified map of the Hillsdale North Sewer project
A simplified map of the Hillsdale North Sewer Project.

What's Happening Now

Over the next few months, crews will be in the neighborhood locating utilities, surveying, inspecting sewer pipes and manholes with closed circuit TV, and drilling to take soil and pavement samples. This information will help engineers decide which locations need repair and what construction methods are best for each location. Learn more about these pre-construction activities by visiting the Pre-Construction webpage

Night Work Proposed 

Engineers have identified multiple locations that will likely require night work (see map). Due to the length and diameter of a few pipes, and traffic safety reasons, some of the work will extend a few hours beyond 6:00 p.m. or will need to be done overnight.

Equipment that generates noise will include sewer cleaning trucks, compressors, light trucks, generators, pumps, and ventilation fans. Night work will also require lighting of the work zone.

Construction Methods

This project will include both trenchless and trench excavation methods: 

  • Open Trench Excavation: The contractor digs a trench, installs a new pipe, fills in the trench, and restores the patched trench with new pavement.  
  • Pipe Lining (CIPP): Through a maintenance hole, the contractor inserts a flexible liner into the existing pipe.  The liner hardens to seal cracks and form a new smooth pipe. 
  • Pipe Bursting: The contractor pushes a bursting head into the sewer line to break apart the existing pipe while pulling a new pipe into place behind it. 

Visit the Construction Methods webpage for more details and photos of construction methods.

Public and Private Property Access

Most information-gathering activities will occur in the public right-of-way. The public right-of-way includes the street, sidewalks, planting strips, and sometimes undeveloped areas like yards or gravel spaces. In the Hillsdale neighborhood, the public right-of-way often extends well into what appears to be private property, including what can appear to be private front lawns. Crews will be accessing these areas to inspect, maintain, and repair public sewer pipes and manholes.

Public Sewer Easements

In addition, where the city has public sewer easements, crews may need to access private property for survey, other information-gathering activities, and eventual possible sewer repairs. City outreach staff will coordinate with affected property owners for access to public sewer pipes and manholes.

Project Background

This project is part of a series of large-scale sewer projects that have, or will be occurring, in the Hillsdale neighborhood. The Hillsdale South Sewer Project finished construction in January 2021, and the Hillsdale Middle and Hillsdale NW projects are currently in the design phase.

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Tracie Heidt (she/her)

JLA Public Involvement

K. Bullock Clayton (she/her/they)

Community Outreach
phone number503-823-5759Monday through Friday, 8 a.m. to 5 p.m.
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