The Montrose Swing Bridge is located on the Welland River at the junction with the Queenston Power Canal in the south-east portion of the City of Niagara Falls, Ontario, Canada. It was built ca. 1910 to carry the Canada Southern Railway over the river (click the link to see a discussion of companies who used the Canada Southern tracks over the years). It is a two track bridge, although only one track remains in use today. It crosses the river at roughly a 45-degree angle.