Ontario Line tunneling begins in Toronto, marking major underground milestone
TORONTO (UI) — Tunneling has begun on the Ontario Line subway project in Toronto, marking a major milestone in one of Canada’s largest urban infrastructure builds.
Crews are using two tunnel boring machines to excavate twin tunnels from Exhibition Station toward the Don Yard, reaching depths of up to about 130 feet below ground.
The Ontario Line will span approximately 9.7 miles (15.6 kilometers) and include 15 stations, connecting Exhibition Place to the Eglinton Crosstown light rail line at Don Mills Road.
Construction is now underway across the full route, with excavation already completed or nearing completion at several downtown stations, including King West, Moss Park and the Distillery District.
Premier Doug Ford described the start of tunneling as a “historic milestone,” noting the project is expected to reduce travel times for some commuters by up to 40 minutes.
Transportation Minister Prabmeet Sarkaria said the milestone advances the province’s broader transit expansion efforts and supports thousands of construction jobs.
At Exhibition Station, crews are building platforms and entrances to connect the new subway line with regional rail service and support growing demand in nearby neighborhoods.
Officials estimate the project will support about 4,700 jobs annually and place roughly 230,000 people within walking distance of transit once complete.
The Ontario Line is part of a broader transit investment program that includes multiple subway expansions across the Toronto region.
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