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 The public buyout was completed in 1841, and work began to deepen the canal and to reduce the number of locks to 27, each . By 1846, a deep path was completed through the Welland Canal, and by 1848 that depth was extended the rest of the way to the Atlantic Ocean via the future path of the St. Lawrence Seaway. Competition came in 1854 with the opening of the Erie and Ontario Railway, running parallel to the original portage road. In 1859, the Welland Railway opened, parallel to the canal and with the same endpoints. But this railway was