Welland Canal Port Maitland. With the opening of the extension, the canal stretched between the two lakes, with 40 wooden locks. The minimum lock size was , with a minimum canal depth of . Deterioration of the wood used in the 40 locks and the increasing size of ships led to demand for the Second Welland Canal, which used cut stone locks, within just a few years. In 1839 the government of Upper Canada approved the purchase of shares in the private canal company in response to the company's continuing financial problems in the face of the continental financial panic of 1837.
Welland Canal, bridge 13 years. Ships failing to negotiate the curve, on at least a couple of occasions, collided with the western approach span. The Welland Public Library holds a file of newspaper clippings regarding such collisions, including one where the ship Atomena collided with the bridge in 1970. The route through Welland which had crossed Main Street since the 1830s was winding and difficult. The large number of bridges, and especially a railroad swing bridge (Welland Canal, Bridge 15) made the route difficult and dangerous. In 1967, it was decided to re-route the canal to the east of the city via the Welland