Eglinton Crosstown West Extension Construction Update
RT&S has published numerous reports on Metrolinx Eglinton’s progress over the past two years. Here is the agency’s latest report.
The latest progress made over the past few months and what to expect along the route this fall.
We talk a lot about dig a tunnel.
But that’s because there’s been a lot to talk about, given the progress made since tunneling began on the Eglinton Crosstown West Extension last April.
Over the past six months, Renny, the first TBM to start digging, has excavated 1.9 km, while Rexy, the second TBM, has excavated 1.1 km since late July. (You can follow the progress of Renny and Rexy here.)
When these two TBMs are completed, they will have dug over 6km of tunnel between Renforth Drive and just west of Scarlett Road – a significant section of the 9.2km route.
Once the Eglinton Crosstown West extension is complete, you’ll be able to travel quickly and easily from Toronto’s east end, to the heart of the city and to Mississauga – no transfers required.
West End Connectors Construction (WECC), the team constructing the tunnels between Renforth Drive and Scarlett Road, are not only working on the tunnels but are also busy with works at key points along the route.
All About Headwalls
Headwalls are an important part of tunnel construction.
Headwalls are the underground retaining structures consisting of a series of concrete columns, called piles, which create a watertight wall around the area of future subway stations and emergency exit buildings.
To construct the headwalls, piles will be drilled into the ground using large drill rigs, which are typically over 33 meters high.
They must be built before the tunnel boring machines arrive at each location. It takes teams approximately four to eight months to construct each headwall.
The headwalls will then serve as frameworks for the construction of future stations and emergency exit buildings.
Construction of the headwall for the project has been underway since the spring.
As it must be completed before the arrival of the tunnel boring machines at each site, the construction of the headwall moves from west to east along the route before the arrival of the tunnel boring machines.
Construction of the headwall on Martin Grove Avenue began this spring and will be completed this month (October), while construction on Kipling Avenue began this summer and will be completed in the spring of 2023.
Work on the emergency exit building at Wincott Drive also began this summer and will continue through next spring.
Looking ahead, work on the headwalls at Islington is expected to start later this autumn and last until spring 2023, while construction of the headwalls at Royal York is expected to start in the winter.
Realignment of Eglinton Avenue West
Once Renny and Rexy reach their destination just west of Scarlett Avenue, they will be dismantled and pulled out of the ground through a mining shaft.
This shaft is also the portal where trains will transition between the tunnel and the elevated guideway.
Construction of the extraction shaft will begin this winter – but early crews are making space by moving Eglinton Avenue West 10 meters (or 33 feet) south.
Beginning in April, crews began realigning the road, including digging out the existing sidewalk, multi-use pathway and patches of grass bordering the road, and constructed a retaining wall, which will eventually hold an all-new sidewalk and a multi-use path separated from the newly staggered traffic lanes.
Crews also built a new ramp that connects to the pedestrian bridge just west of where the portal will be.
This work is expected to be completed by the end of this year, at which time WECC will proceed with the construction of the extraction shaft.
Virtual Open House
To learn more about upcoming work, Register for the virtual open house on November 2.
For those who wish to get more involved, it is possible to join the Construction Liaison Committee (CLC).
Quarterly CLC meetings provide a forum for residents, businesses or other local interested parties to communicate and share their concerns directly with project staff. For more details on how to join the CLC, email [email protected]
Visit Metrolinx.com/EglintonWest to subscribe to the project newsletter and get the latest information about the project.