Ontario Highway 20A (Wellandport) History - The King's Highways of Ontario

There have been four different routes in Ontario numbered as King's Highway 20A. This section of Highway 20A ran from Bismarck to the Highway 3A Junction west of Welland. Three other discontinuous sections of Highway 20A existed north of Stoney Creek, west of Elfrida on Hamilton Mountain and south of Thorold.

This route of Highway 20A initially ran from the Highway 20 Junction at Bismarck southerly to Wellandport. The Ontario Department of Highways (DHO) assumed this short route as a new provincial highway on June 4, 1930. The new route was designated as Highway 20A and was about 5 km in length. The entire route was paved from Bismarck to Wellandport in 1930. In 1934, Highway 20A was extended southeasterly from Wellandport to join up with Highway 3A at Becketts Bridge. The DHO assumed the road between Wellandport and Becketts Bridge on April 4, 1934. This extension added almost 10 km to the length of Highway 20A. In 1937, the entire route of Highway 20A from Bismarck to Becketts Bridge was renumbered as Highway 57.