First Yonge North Subway Extension tunnel boring machine arrives
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- First Yonge North Subway Extension tunnel boring machine arrives
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Oct. 26 – A special delivery has arrived for the Yonge North Subway Extension.
The first of two tunnel boring machines (TBMs) that will dig the extension’s twin 6.3-kilometre tunnels has arrived at the tunnel launch shaft site in York Region
The first tunnel boring machine for the Yonge North Subway Extension has arrived at the launch shaft in York Region.
Emblazoned with a bright red maple leaf, the TBM’s large circular cutterhead will eventually rotate and carve out one of the new subway tunnels, after the machine is fully assembled and ready.
One of two tunnel boring machines for the Yonge North Subway Extension.
Work to assemble the first TBM is now underway, with a crane being used to lower its pieces into the launch shaft, where the machine will be put together – bringing the Yonge North Subway Extension one step closer to tunnelling.
The second TBM will go through a similar process when it arrives.
Assembly of the first tunnel boring machine is underway.
Meanwhile, crews are getting the launch shaft site ready for future tunnelling by installing equipment and support systems the TBMs will need once they start digging.
The two tunnel boring machines will start their underground journey from the launch shaft.
The Yonge North Subway Extension will extend TTC Line 1 subway service approximately eight kilometres farther north, building rapid transit from downtown Toronto to Vaughan, Markham, and Richmond Hill.
Map showing the Yonge North Subway Extension, which includes five new stations at Steeles, Clark, Royal Orchard, Bridge, and High Tech.
Once assembled, the two TBMs will tunnel south from the launch shaft toward Finch Station, each digging one of the twin tunnels that will connect the subway extension to existing Line 1 service at Finch Station.
The Yonge North Subway Extension will add more than 94,000 transit rides to the network each day, reducing travel times by up to 22 minutes and cutting greenhouse gas emissions by more than 4,800 tonnes annually.
Get the latest updates on the Yonge North Subway Extension by subscribing to the e-newsletter and following the project on Instagram and Facebook. The Metrolinx community office in York Region also provides opportunities to connect with project experts and learn more about ongoing and upcoming construction.
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