Tunnelling for Toronto’s Scarborough Subway Extension has passed the halfway mark.
TBM Diggy Scardust, operated by Strabag, has completed over 4km of the 6.9km tunnel and installed nearly 2,000 liner rings.
The Herrenknecht machine has just passed the Lawrence and McCowan station site and is advancing towards the extraction shaft at Eglinton Avenue East and Midland Avenue.
Strabag has the design, build and finance contract for the 6.9km section of the tunnel, while the remaining 900m portion will be built by the stations, rail and systems contractor, Scarborough Transit Connect, a consortium of Aecon Infrastructure Management, FCC Canada and Mott MacDonald Canada.
At 10.7m wide, the three-station Scarborough extension will be the first subway tunnel in Toronto to house tracks operating in both directions.
