The vertical excavation of the north shaft has been completed on the Ontario Line’s Queen-Spadina subway station in Toronto.
During the next phase of excavation, which will continue into early 2026, crews will connect the newly completed station shaft to the future station platform area and excavate in a south-west direction away from the north-east corner of Queen Street and Spadina Avenue.
This cavern will also create space for the future tunnelling machines to pass through as they create the Ontario Line subway tunnels through downtown Toronto.
Crews will deliver specialised machinery into the excavated shaft at the north site where it will be assembled and operated. The machines will use sequential excavation.
When complete, the Ontario Line will be a 15.6km subway that will bring 227,500 more people in Toronto within walking distance to transit. It will have 15 stations and more than half the route will be underground.
