Main Street Tunnel Main Street Tunnel The Main Street Tunnel, located in Welland, Ontario, Canada, is an underwater tunnel, carrying Niagara Road 27 and the unsigned designation of Highway 7146 under the Welland Canal. It is named as a part of East Main Street. The structure was built as a part of the Welland By-Pass project. Its construction was relatively easy since, like the Townline Tunnel, it was constructed at the same time as the channel above it and a simple cut and cover. The tunnel was officially opened on May 20, 1972. The tunnel links Highway 406 on the west side of
Channel Tunnel for an expected German invasion, a Royal Navy officer in the Directorate of Miscellaneous Weapons Development calculated that Hitler could use slave labour to build two Channel tunnels in 18 months. The estimate caused rumours that Germany had already begun digging. A British film from Gaumont Studios, "The Tunnel" (also called "TransAtlantic Tunnel"), was released in 1935 as a futuristic science fiction project concerning the creation of a transatlantic tunnel. It referred briefly to its protagonist, a Mr. McAllan, as having completed a British Channel tunnel successfully in 1940, five years into the future of the film's release. By 1955,