Multiple choice general knowledge Longest cantilever bridge Pont de Quebec, Qubec Forth Bridge, Edinburgh Minato Bridge, Osaka Commodore Barry Bridge, New Jersey Reveal answer Fill a bubble to check yourself A Correct answer Explanation The Pont de Québec (Quebec Bridge) is the world's longest cantilever bridge with a main span of 549 meters. Completed in 1917, it crosses the Saint Lawrence River in Quebec, Canada and still holds this record today.