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Update: TBM "Holey" Breaks Through on the East Side of W.R. Allen Road

December 7, 2012

In late July, 2012 the Tunnel Boring Machine “Holey” began its second tunnelling drive from the launch shaft at the Sheppard West Station site and headed southbound toward the Downsview Subway Station. “Holey” has now completed the milestone of breaking through at the extraction shaft located at W.R. Allen Road and  Sheppard Avenue West on December 7, 2012. “Holey” tunnelled 1.2 kms in its final drive and placed 793 tunnel liners in the tunnel.

Removal of “Holey” from the extraction shaft will begin the week of December 10, 2012 and is anticipated to take approximately six weeks to complete. 

TBM Holey Breaks Through.

(Above, TBM "Holey" breakthrough)

You may follow the progress for “Holey” and “Moley” on our website under “Tunnelling Progress” and the neighbourhood maps “Downsview-Sheppard” and “Keele-Finch”.

Southern Tunnel Contract Progress Map

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