Welland Canal and crossings are numbered from north to south. The following illustration depicts the profile of the Welland Canal. The horizontal axis is the length of the canal. The vertical axis is the elevation of the canal segments above mean sea level. If assigned by the St. Lawrence Seaway Authority. The original bridges across the fourth canal were numbered in order. Numbering was not changed as bridges were removed. Welland Canal The Welland Canal is a ship canal in Ontario, Canada, connecting Lake Ontario and Lake Erie. It forms a key section of the St. Lawrence Seaway. Traversing the Niagara Peninsula
First Welland Canal 1818, when the flow was especially low, Merritt pursued the idea of bringing water to his mills from the Welland River. On a bigger scale, the Erie Canal, dug from the Hudson River through northern New York, was about to reach Lake Erie. The impending completion meant the cargo from upper Great Lakes was about to head down the canal and Hudson River to New York City, bypassing its previous destination, Montreal. At the time, a considerable rivalry existed between Montreal and New York for cargo headed to Europe via ocean-going vessels. All of these factors contributed to the construction