Metrolinx: Ontario Line investigative drilling in Thorncliffe

Investigative drilling work along Overlea Blvd, Thorncliffe Park Drive and Millwood Road will take place, to advance design concepts and other structural plans for the Ontario Line. Metrolinx will be drilling test holes and using a vacuum truck to gather information and evaluate underground conditions. The Community Notice states that the work could be starting as early as July 25, 2022. Intersections impacted: Overlea Blvd & Millwood Rd; and Overlea Blvd & Thorncliffe Park Drive