The route of a contentious subway extension running between Yorkville and Bloor Street is taking shape after the Finch Avenue tunnel-boring machine pulled out of service.
Crews at the Union Depot facility have shifted the state-of-the-art bore of the 6.5-kilometre tunnel toward the east to accommodate the self-propelled beast that burrowed below the subway tracks for five years, before some of its batteries were depleted and it had to be mothballed. The tunnel is expected to be back in operation by November, and its working status is largely in the hands of Ontario’s transportation ministry, which owns Union Depot.
TIMELINE: TTC’s Yonge-Eglinton subway project
Located a short distance east of Toronto’s industrial core, the city’s Transitway line runs on rails that are not street-level. The Yonge-Eglinton extension, which was approved by the City of Toronto and Transit Commission, runs above ground and was designed with elevated stations so it would not interrupt traffic flows in the city’s busy west end.
The tunnel bored to the east is designed to allow cars to reach the station at McArthur Avenue to the north of the railway, bypassing one of two tunnel crossings planned at Bloor Street.