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 of Welland on the former Welland Canal railway/Canadian National tracks beside the former site of the Atlas Specialty Steels plant (torn down in 2007). A daily as requested (Monday to Friday) train operates along this route to Merritton. Trillium Railway has a handful of industries throughout Thorold and St. Catharines, on the former Niagara, St. Catharines and Toronto trackage. No passenger trains stop in Welland – the closest Via Rail stations are in St. Catharines and Niagara Falls. Via Rail ceased operations of their own trains to these stations on 25 October 2012. Amtrak does operate 2 trains to these