The Quebec Bridge, opened in 1917, crosses the Saint Lawrence River near Quebec City.
It is a cantilever bridge carrying road, rail, and pedestrian traffic between Sainte-Foy–Sillery–Cap-Rouge and the south shore. The bridge was built to provide a major crossing closer to Quebec City than Montreal’s bridges.
Construction suffered two catastrophic collapses. The southern cantilever fell in 1907, killing 75 workers, and a central section collapsed during a second attempt in 1916, killing 13 more. The failures led to major changes in engineering oversight and bridge design practice.
The completed bridge has a 549-metre main span. It is often confused with the nearby Pierre Laporte Bridge, a later suspension bridge that carries highway traffic but is not the famous cantilever structure.