First Welland Canal points on the Lake Erie shore, and also offered a natural harbour for the ships waiting to enter the canal. The new part of the canal was to run in a fairly straight line, except for a stretch where it followed a local ravine and a creek to minimise required excavation of hard rock in the area. The Welland Canal Company obtained a loan of 50,000 pounds from the Province of Upper Canada. Construction started soon after, but it was delayed by rain, difficulty in clearing land, and a cholera outbreak in 1832. Neither the Wainfleet Marsh nor the rock
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