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
Channel Tunnel favoured a drive-through tunnel, but ventilation issues, concerns about accident management, and fear of driver mesmerisation led to the only shortlisted rail submission, CTG/F-M, being awarded the project in January 1986. Among reasons given for the selection was that it caused least disruption to shipping in the Channel, least environmental disruption, was the best protected against terrorism, and was the most likely to attract sufficient private finance. The British "Channel Tunnel Group" consisted of two banks and five construction companies, while their French counterparts, "France–Manche", consisted of three banks and five construction companies. The role of the banks was to