Fencing has gone up around the launch shaft for the Scarborough Subway Extension at the northeast corner of Sheppard Avenue East and McCowan Road.
https://blog.metrolinx.com/2021/02/1...oving-forward/
Utility Relocations are ongoing and full scale construction of the tunnel launch shaft will begin in a month or two.
Toronto Scarborough Subway Extension - 4.7 miles (7.5 km)
The line will replace the failing Scarborough Rapid Transit Line, an ICTS mid-capacity system that has reached end of life (Same technology as the Vancouver Skytrain). It will feature 3 stops over the 7.5km, one at Lawrence Avenue, one at Scarborough Town Centre, and one at Sheppard Avenue.
http://www.metrolinx.com/en/greaterr...%20Scarborough.
This is one of four subway extensions expected to start construction in Toronto over the next 2 years or so.