This early example of a concrete arch bridge is noted for its extremely wide deck which is wider at the west end than at the east end, as it brings Elgin Street and Wellington Street together to merge with Rideau Street. In this sense, the bridge is essentially a form of "Y" bridge. Y bridges are a rare layout of bridge or bridges that split into two structures while crossing a feature. However, unlike a typical Y bridge, this bridge was designed with a single bridge unit with a solid deck throughout with no gaps, forming a triangle-shaped deck. The space in between the roads was originally designed for use as an open public space, giving rise to the name Plaza Bridge. Today however, increasing traffic volumes and traffic design requirements have eaten up the plaza space and now the nearly the entire deck is utilized by traffic lanes. In addition, a hole was cut in the western end of the deck to provide a pedestrian stairway that leads under the bridge.
Historical Photo of Newly Completed Bridge
Source: The Contract Record, Vol. 26, No. 17, April 24, 1912.
Historical Photo of Previous Cast Iron Arch
Source: Bridge and Rideau Canal from Stairs [showing
Corry Building - Lindsay's].
William James Topley/Library and Archives Canada/PA-009035
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