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 a straight cut across the Wainfleet Marsh. The location chosen for the aqueduct across Welland River was not Port Robinson. Although the Welland Canal and River first met in Port Robinson, it was decided to dig the canal essentially parallel to the river for a couple of kilometers upstream before crossing it. The aqueducts of three subsequent canals were later built in the same spot. Once again, many of the Deep Cut labourers were transferred to the Feeder cut. The digging was finished in the span of 177 days, which was a large achievement at the time. Lake Erie water