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
Kviven Tunnel Kviven Tunnel The Kviven Tunnel () is a long road tunnel through the mountain "Kviven", along the European route E39 highway. The road crosses the county border between Sogn og Fjordane and Møre og Romsdal counties. The eastern end of the tunnel is at Kalvatn, just east of the village of Fyrde in Volda Municipality (in Møre og Romsdal county). The western end is at the village of Grodås in Hornindal Municipality (in Sogn og Fjordane county). The tunnel was approved for construction in 2008 and it was completed in 2012. The tunnel was officially opened on 22 September 2012