Scarborough Subway Extension Advanced Tunnel Project Name and Location: Scarborough Subway Extension Advanced Tunnel Project . Toronto (Canada) Client: ACCIONA INGENIERIA EWE Intervention: Geotechnical and Structural Design during Request for Proposal process Key Features: 7.8-kilometre tunnelling works, from Kennedy Station to McCowan road/Sheppard Avenue Launching and extraction shafts, tunnels Headwalls for emergency exit buildings and stations