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​Project overview

The existing 99 Avenue sanitary trunk line that services over 100,000 customers needs to be replaced. This project will be completed in 2 stages, starting in summer 2020 and we estimate the project will be finished by the end of 2024. In Stage 1 (red line in the map below), we are building a new tunnel along 99 Avenue, north on 148 Street and east on 101 Avenue. In Stage 2 (blue line in the map below), we'll rehabilitate the existing tunnel on 99 Avenue. Once our work is done, both tunnels will be in service, increasing capacity in the trunk network.


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

Community Art Contest

EPCOR has incorporated the community into the project through a Community Art Contest utilizing construction site hoarding.
About our community art contest