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​Project overview

The 99 Avenue sanitary sewer conveys wastewater from west Edmonton to the Gold Bar Wastewater Treatment Plant. The sewer is approximately 30 metres deep and services approximately 117,000 customers. Inspections have identified the existing trunk varies from fair to very poor condition and requires rehabilitation between 142 Street and 151 Street to ensure it continues to meet the current needs and growth for west Edmonton.

This project has been broken down into two stages: 

  • ​​Stage One: New Sewer Construction - Along 99 Avenue, north on 148 Street and east on 101 Avenue (completed)
  • Stage Two: Rehabilitation of 99 Avenue Sanitary Trunk - Along 99 Avenue, from 142 Street to 151 Street ​​


Impacts to you 

While we try to minimize disruptions during our project work, there are some things that may affect you throughout the project, like traffic impacts and sidewalk closures.

Impacts to you


What to expect during construction

You can expect to experience typical construction activities during this work. Here are the details about what you can expect during construction.

Construction impacts



This project is broken out into 2 stages and we estimate both stages will be complete by 2024. Have a closer look at a more detailed project timeline.



Project background

Learn more about the work we're doing during this project and why we need to do it.

Project background

Adjacent or related projects

We'll also be working on different rehabilitation projects in the same area, during the same time. Find out how this work impacts the 99 Avenue project.

 Related projects


Tunnel Boring Machine

For this project, we'll be using a Tunnel Boring Machine (TBM) to excavate tunnels. Learn more about this machine and how it's used.

Tunnel Boring Machine