Hydro One Midtown Tunnel

  • Provided comprehensive services in tunnel design, including project coordination; civil engineering design, including the design of sump pumps; structural design; topographical and legal surveying; traffic management, including temporary traffic signal design; ventilation design; and contract administration
  • Tunnel design included a total of three shafts ranging in depths, two different support systems of steel liner plate and steel ribs and lagging, and two tunnels excavated by the tunnel boring machine
  • Project required careful and precise route selection to accommodate specific property requirements while maintaining a constructible alignment for the tunnel boring machine