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​Pr​oject overview​​

​The Mill Creek combined sewer trunks carry wastewater from a large part of south Edmonton towards the Gold Bar Wastewater Treatment Plant, and also convey rainwater and snowmelt from some of Edmonton’s older south side neighborhoods. This line services approximately 58,000 sanitary connections in south Edmonton. Segments of the combined sewer trunk have been observed to be in very poor condition. 

Inspections have identified that the existing tunnel running through the Ritchie and Old Strathcona neighborhoods, as well as under the Mill Creek Ravine, requires replacement to ensure it continues to reliably meet the needs for south Edmonton. 

The project is expected to begin in mid-March 2023 with completion in 2026.

Click map for larger version


Project background

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

Project background


Timelines and impacts to you

This project is broken out into 3 stages and we estimate all stages will be complete in 2026​. Have a closer look at a more detailed project timeline and impacts to you.

Timelines and impacts

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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


Tunnel Boring Machine

For this p​roject, 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


Public information session

On November 24, 2022, we held a public open house to introduce the project to the community.

Open house board​s


We understand you may have questions about this information, so please feel free to contact us.

Tel: (780) 412-4200​