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
Genting Sempah Tunnel additional tunnel for the eastbound traffic was constructed between 1995 and 1997 when the Karak Expressway was upgraded from a 2-lane highway to a high-speed multi-lane expressway. Genting Sempah Tunnel The Genting Sempah Tunnel is the first highway tunnel in Malaysia. Located on the Kuala Lumpur–Karak Expressway, the 900-metre tunnel connects Hulu Gombak in Selangor to Genting Sempah, Pahang. This tunnel was constructed between 1977 and 1979. The tunnel was officially opened in 1979 by the former Minister of Works and Communications, Abdul Ghani Gilong. The tunnel was once used to be the longest road tunnel in Malaysia before the