Welland Canal, bridge 13 Welland, the bridge also links East Main Street (leading towards Niagara Falls) and West Main Street (providing access to roads leading along the Welland River to Wainfleet and Wellandport. It also provides a link between Niagara Street (formerly known as North Main Street leading to Thorold and St. Catharines, and King Street (formerly South Main Street, and also Canal Street), formerly leading to the Canada Southern Railway station, and on to Port Colborne. The "Chippawa Road" (as Main Street was then known) crossed the First Welland Canal (constructed between 1824 and 1829) via a wooden swing bridge with the pivot
Welland Canal updated systems for Locks 1 through 7 will be completed in 2017. In the 1950s, with the building of the present St. Lawrence Seaway, a standard depth of was adopted. The long Welland By-Pass, built between 1967 and 1972, opened for the 1973 shipping season, providing a new and shorter alignment between Port Robinson and Port Colborne and by-passing downtown Welland. All three crossings of the new alignment—one an aqueduct for the Welland River—were built as tunnels. Around the same time, the Thorold Tunnel was built at Thorold and several bridges were removed. These projects were to be tied into