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 15 Railway Canal Subdivision through Welland and the new Wainfleet Marshalling Yard at Wainfleet, Ontario. In the late 1980s, service on this line between Welland and Wainfleet ended and the track was removed between Wainfleet and a point a couple of hundred meters west of Bridge 15. The bridge remains in use today exclusively to serve Vesuvius Industries in Welland. It is owned by the Canadian Pacific Railway (CPR), but is not connected to any other CPR tracks. It is used only sporadically by Trillium Railway, and chain link fence gates have been installed at both ends of the bridge to