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 separate railway lines. The new segment of canal would have no bridges, and just one railway tunnel, so all of these routes required redesign. The two branches of the CASO line, plus the Cayuga Subdivision were re-routed through the Townline Tunnel, while the North/South Canadian National line was split and discontinued as a through route. The station at King Street was abandoned and demolished. It was replaced by a new station outside of town, but passenger service ended soon after. Today, Welland is the location of one of only two remaining railway crossings that span the Welland Canal. The Townline