Reversing Falls Bridge, Road bridge in Saint John, Canada

Reversing Falls Bridge is a two-lane steel arch road bridge carrying New Brunswick Route 100 across the Saint John River at Saint John. It was designed by Philip Louis Pratley and opened in 1915 alongside the 1853 suspension bridge it replaced. The Reversing Falls Railway Bridge has shared the crossing since 1885, and a public viewing point sits above the bridge on the west bank.

The original crossing was built in 1853 and replaced in 1915 with the current steel structure following engineering advances of the era. This replacement provided a safer and more durable passage over the turbulent river section.

The bridge is known locally as the floating bridge. Until the 1940s it carried a streetcar line across the river. Visitors stop at a public viewing point above the bridge on the west bank, or use the restaurant and gift shop built next to its western abutment.

The bridge is part of Route 100 and vehicles can cross toll-free while moving between eastern and western sections of the city. Pedestrians can use the walkways to view the water reversal from above, especially during tidal changes.

The first known suicide attempt in which somebody survived occurred on June 29, 1914, when the crossing was still a suspension bridge. Between 2017 and 2022 the Saint John Police Force responded to an average of 20 incidents a year at the bridge, and calls for a barrier were made in 2017, 2019 and 2022.