Main Street Tunnel technique, whereby the tunnel was excavated, the concrete poured, and the structure buried, on top of which the canal channel was built. This avoided costly boring beneath an active waterway; the structure cost C$11 million. This price was split 50–50 between Transport Canada and the St. Lawrence Seaway Authority. The tunnel opened with a parade featuring the Welland Police pipe band and various officials on the morning of May 20, 1972. 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
Channel Tunnel against another German attack. The French did not take the idea seriously, and nothing came of Lloyd George's proposal. In the 1920s Winston Churchill was an advocate for the Channel Tunnel, using that exact nomenclature in an essay entitled "Should Strategists Veto The Tunnel?" The essay was published on 27 July 1924 in the "Weekly Dispatch", and argued vehemently against those that believed the tunnel could be used by a Continental enemy in an invasion of Britain. Churchill extolled his enthusiasm for the project again in an article for the "Daily Mail" on 12 February 1936, "Why Not A Channel