Design and Construction of the Montreal Largest Transit System
Once completed, the Montreal Réseau Express Métropolitain (REM) will be the fourth largest automated transportation system in the world. For the metropolitan area, the REM also represents the largest transportation infrastructure since the Montreal metro inaugurated in 1966. The proposed solution fosters environmentally sustainable transportation. The REM represents construction costs of approximately 6.3 billion Canadian dollars. The project consists of 67 km of twin tracks over four branches connected to downtown Montreal. The project includes 26 stations with 3 underground stations in downtown Montreal. One of the underground stations will be built using the NATM method and the 2 others with the cut and cover approach. The project also includes the rehabilitation and enlargement of the Mont Royal Tunnel. This100 year old double track tunnel is about 5 km long. The REM also consists of 3.6 km new TBM tunnel connecting downtown to the Montreal International Airport through saturated soft ground and karstic rock.