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 First Welland Canal The Welland Canal has gone through many incarnations in its history. Today, five distinct canal-construction efforts are recognized. The retronym First Welland Canal is applied to the original canal, constructed from 1824 to 1829 and 1831 to 1833. The Great Lakes form an excellent navigation route into the interior of North America. Downstream from Niagara Falls, ships can reach the port city of Montreal without encountering major difficulties. Upstream, the lakes are navigable all the way to the western end of Lake Superior. Early on during the European settlement of North America, lack of other infrastructure made