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Thursday, March 14, 2013    

Tunnel boring for Toronto subway extension gets under way


Toronto Transit Commission (TTC) officials and other dignitaries yesterday marked the start of the next stage of tunnel construction for the Toronto-York Spadina Subway extension at the future Highway 407 Station.

The tunnel project will require two boring machines to create twin tunnels that will link the Highway 407 Station site to the Steeles West Station site, Transport Canada officials said in a prepared statement.

The machines will bore less than a mile of twin subway tunnels at a rate of about 16 yards a day, southeast from the launch location to an extraction site.

Managed by the TTC, the project will extend the commission's Yonge-University-Spadina Subway line about six miles from its present terminus at Downsview Station to the Vaughan Metropolitan Centre at Highway 7. The extension will feature six new stations, including one at York University, and three new commuter parking lots.

The project is slated for completion in fall 2016. The project is being funded by the Canadian government ($697 million, in Canadian dollars), province of Ontario ($870 million), city of Toronto ($526 million) and regional municipality of York ($352 million).

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