The Eglinton-Scarborough Crosstown Tunnel West, Keele to Yonge Contract, is part of the Eglinton Crosstown LRT project, one of the largest infrastructure expansion projects in Toronto’s history. The light rail transit (LRT) line will run across Eglinton Avenue between Mount Dennis (Weston Road) and Kennedy Station. This project is part of an $8.5 Billion transit expansion program. The scope of work includes construction of a 6.5km long, twin-bored tunnel running beneath Eglinton Avenue from Black Creek Station to the Yonge Street Station. The 6 meter twin tunnel was constructed using earth pressure balance (EPB) tunnel boring machines with installation of precast concrete tunnel liners (PCTL). The PCTL had an internal diameter of 6 meter with a reinforced wire cage. Technicore along with its Joint Venture Partners, Obayashi, Kenny and Kenaidan carried out the construction of the 6.5 kilometer twin tunnels. Technicore was primarily responsible for the management and sourcing of the labour force including, scheduling, payroll, union and trade agreements. Strict adherence to local codes and standards was necessary for successful completion of this project. Due to its proximity to local businesses and residences in the highly populated downtown core, a rigorous settlement monitoring systems was permitted to ensure no disruption to existing infrastructure occurred.