Ontario transportation agency Metrolinx has contracted a 50/50 joint venture with Aecon and ACS Dragados Canada to excavate 3.25km of tunnel for the Eglinton Crosstown Light Rail Transit (LRT) project.
Under a $177m tunnelling contract, the joint venture will build two parallel 6.5m diameter tunnels west along Eglinton Avenue. The 3.25km tunnel will be constructed from a launch shaft located east of Brentcliffe Road to an extraction shaft located east of Yonge Street.
As part of the LRT contract, the company will also construct two emergency exit buildings.
Aecon president and chief operating officer Teri McKibbon said: "Aecon has extensive experience developing mass transit systems, and we are pleased to be awarded this significant LRT contract.
"The Eglinton Crosstown LRT is a landmark transit line that will serve millions of transit users across the city of Toronto."
The tunnelling work is expected to start as early as next year, and is scheduled for completion in the second quarter of 2016.
In 2012, the first $320m tunnelling contract was awarded to a joint venture of Obayashi Canada, Kenny Construction, Kenaidan Contracting and Technicore Underground.
Under the contract, the companies were to construct 6.2km tunnel below Eglinton Avenue from the west launch shaft area at Black Creek Drive to Yonge Street.
Aecon, which is the lead of the joint venture, is also working on the Toronto-York Spadina Subway Extension, and the UP Express elevated spur line.