"Yorkie" Tunnelling Underway from Steeles West Launch Site

December 1, 2011

The third of four tunnel boring machines, “Yorkie”, began tunnelling at the end of last month from the Steeles West launch shaft. “Yorkie and Torkie” will build the tunnels in sections from Finch West Station up to Vaughan (see graphic below). This is the first section of the tunnels to be built from Steeles West station launch site to the Finch West station site. A tunnel boring machine can tunnel or “bore” up to 15 metres per day. “Torkie” is currently being assembled and will be launched early in 2012 from Steeles West launch site and will follow the same path.

For more Toronto-York Spadina Subway Extension construction information, please contact us at:

Construction Information Line: 1-800-223-6192

Email: TYSSE@ttc.ca

TTY Hearing Impaired Service: 416-481-2523 (Daily 8 a.m. - 5 p.m., closed statutory holidays).