Longest Cantilever Bridge - Pont de Quebec

The Quebec Bridge (Pont de Québec in French) crosses the lower Saint Lawrence River to the west of Quebec City, and Lévis, Quebec, Canada.

The Quebec Bridge is a riveted steel truss structure and is 987 metres (3,239 ft) long, 29 m (94 ft) wide, and 104 m (340 ft) high. Cantilever arms 177 m (580 ft) long support a 195 m (640 ft) central structure, for a total span of 549 m (1800 ft), the longest cantilever bridge span in the world. It is the easternmost (farthest downstream) complete crossing of the Saint Lawrence.

The bridge accommodates three highway lanes (none until 1929, one until 1949, two until 1993), one rail line (two until 1949), and a pedestrian walkway (originally two); at one time it also carried a streetcar line. It has been owned by the Canadian National Railway since 1993.