Metrolinx has completed all excavation under the Toronto Transit Commission (TTC) box, where crews had to navigate in and around the existing and operational TTC Yonge-University subway Line 1.
This required crews to build a second platform below the existing one, including using underpinning and special techniques to dig out the earth. With all excavation under TTC complete, Metrolinx has completed all major excavation on the project.
Next, crews will be leveling and compacting the ground to prepare for a concrete pour which will form the lowest level.
