"This project will deliver the 7.8-kilometre Scarborough Subway Extension in two primary contracts: the SRS contract and the Advance Tunnel contract, which is currently under..." (May, 2022)
References:
May, Tiana. (2022, Dec 2nd) Development Partner Selected for Toronto’s Scarborough Subway Extension. Retrieved from Railway-News: https://railway-news.com/development-partner-selected-for-torontos-scarborough-subway-extension/