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
Genting Sempah Tunnel 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 construction of the 4-km SMART Tunnel which was opened in 2007. Originally, the Genting Sempah Tunnel was used to be a 2-lane single-carriageway tunnel but then an