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 On 17 January 2015, both tunnels were closed following a lorry fire which filled the midsection of Running Tunnel North with smoke. Eurostar cancelled all services. The shuttle train had been heading from Folkestone to Coquelles and stopped adjacent to cross-passage CP 4418 just before 12:30 UTC. Thirty-eight passengers and four members of Eurotunnel staff were evacuated into the service tunnel, and then transported to France using special STTS road vehicles in the Service Tunnel. The passengers and crew were taken to the Eurotunnel Fire/Emergency Management Centre close to the French portal. On the night of 19/20 February 1996, about