QuizAsk someone to name the world's longest bridge and you'll usually hear Golden Gate or Brooklyn Bridge — both iconic, neither close to the top of this list. The actual record-holders are enormous viaducts built for high-speed rail, mostly in China, that stay elevated across miles of flat, flood-prone terrain instead of running at ground level.
- Danyang–Kunshan Grand Bridge — China — ~165 km (102 mi) — part of the Beijing–Shanghai high-speed line
- Changhua–Kaohsiung Viaduct — Taiwan — ~157 km (98 mi) — Taiwan High Speed Rail
- Cangde Grand Bridge — China — ~116 km (72 mi) — Beijing–Fuzhou high-speed line
- Tianjin Grand Bridge — China — ~114 km (71 mi) — Beijing–Shanghai high-speed line
- Wuhan–Guangzhou Grand Bridge — China — ~109 km (68 mi) — Wuhan–Guangzhou high-speed line
- Hong Kong–Zhuhai–Macau Bridge — China — ~55 km (34 mi) — the world's longest sea-crossing bridge-tunnel system
- Bang Na Expressway — Bangkok, Thailand — ~54 km (34 mi) — one of the longest road viaducts anywhere
- Beijing Grand Bridge — China — ~68 km (42 mi) — Beijing–Shanghai high-speed line
- Lake Pontchartrain Causeway — Louisiana, USA — ~38 km (24 mi) — the longest bridge over open water, continuous
- Confederation Bridge — Canada — ~13 km (8 mi) — the longest bridge over ice-covered water
The Lake Pontchartrain Causeway is the one worth remembering for trivia night: it's the longest bridge in the world measured over continuous open water, which is a different (and more famous) record than "longest bridge" overall.