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Project News September 2014

September 2, 2014

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Construction Update: Track Installation Well Under Way!

Photo of workers welding rail
Workers welding rail in the new tunnels – June 2014.

Exciting things are happening underground on the Toronto-York Spadina Subway Extension (TYSSE) project. Now that tunnelling is complete, work is under way to install track and prepare the tunnels for subway service.

What’s been done so far?

The project’s track installation contractor began installing track last summer between Downsview Park Station and Finch West Station. This was followed by installation of track between Sheppard West Station (existing Downsview Station) and Downsview Park Station. Track is now installed in both tunnels between Sheppard West Station and the crossover, south of Finch West Station.

Map of tunnel progress
Construction Activity Map shows completed track in blue.

What’s happening right now?

While track installation continues between Pioneer Village Station and York University Station, special trackwork is under way at the Finch West Station crossover (a crossover has special tracks and switches to allow trains to cross from one track to another). The next stage of track installation will begin at York University Station and proceed south to Keele Street.

Double concrete ties
Double concrete ties installed in the southbound tunnel north of Downsview Station – February 26, 2014.

Photo of workers in tunnel
Looking southbound north of Downsview Station where crew are installing the power rail coverboard – February 26, 2014.

Photo of workers installing rail
Crew installing rail at Pioneer Village Station – June 23, 2014.

Photo of puck
A standard puck, which is embedded in the ties.

Special Track Design Reduces Noise and Vibration

Subway tracks are bolted to concrete ties (reinforced concrete pads) which rest on a concrete trackbed in the tunnel. Since concrete on concrete would create noise and vibration, special vibration isolation pucks (rubber cushions resembling giant hockey pucks) are embedded in the underside of the concrete ties, separating the ties from the trackbed (see photo above).

Track Installation Statistics

The TYSSE project is an 8.6-kilometre extension of the Toronto Transit Commission’s Yonge-University-Spadina subway line from its present terminus at Downsview Station (to be renamed Sheppard West Station when the extension is complete) to the Vaughan Metropolitan Centre Station at Highway 7. It will have six new stations. The expansion of the subway will bring the line into The Regional Municipality of York.

For More Information

Call: 1-800-223-6192
Email: to receive regular construction notices
YouTube: Visit the Official TTC YouTube Channel to view three tunnelling videos; the latest shows construction of the northern tunnels by TBMs “Yorkie” and “Torkie” in York Region.

The Toronto-York Spadina Subway Extension project is jointly funded by the Government of Canada, the Province of Ontario, the City of Toronto and The Regional Municipality of York.

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Bus Route Changes


Review the new changes to bus routes in the area to connect to the new subway extension.

Read about it here!

Need Information

To contact us for information about the project:

Call 416-393-4636 (INFO) automated information available 24 hours daily.

Contact the Project

Photo Gallery

Check out the latest construction photos and project YouTube videos.

Click here to view the Photo Gallery.

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