Famous Beam Bridges Around the World

Beam bridges (girder bridges)—the simplest structural form: horizontal beams supported at each end by piers/abutments—are the most common bridge type worldwide. Here are iconic examples (note: some listed are actually suspension/cable-stayed/arch—corrected below).

✅ True Beam / Girder Bridges

• Lake Pontchartrain Causeway (Louisiana, USA) — World's longest continuous bridge over water (23.83 mi / 38.4 km). Prestressed concrete girders.
• Manchac Swamp Bridge (Louisiana, USA) — 22.8 mi (36.7 km), concrete girders.
• Atchafalaya Basin Bridge (Louisiana, USA) — 18.2 mi (29.3 km), I-10 twin spans, girders.
• Hong Kong–Zhuhai–Macau Bridge (China) — 34 mi (55 km) total; bridge sections are steel box girders.
• Vasco da Gama Bridge (Lisbon, Portugal) — 10.7 mi (17.2 km), concrete box girders.
• Øresund Bridge (Copenhagen–Malmö) — 4.9 mi (7.8 km) bridge section: concrete girder (tunnel + artificial island complete link).
• Confederation Bridge (PEI–New Brunswick, Canada) — 8 mi (12.9 km), concrete box girders.
• Seven Mile Bridge (Florida Keys, USA) — 6.8 mi (10.9 km), concrete segmental box girders.
• General typology: Nearly every highway overpass, railway viaduct, and pedestrian footbridge is a beam/girder bridge (concrete I-beams, box girders, steel plate girders).

❌ Commonly Misclassified (Not Beam Bridges)

• Eiffel Tower Bridge — Doesn't exist. (Eiffel designed Garabit Viaduct — arch.)
• Forth Rail Bridge (Scotland) — Cantilever truss (steel).
• Ponte Vecchio (Florence) — Segmental stone arch.
• Ponte Sant'Angelo (Rome) — Stone arch (originally Roman).
• Viaduc de Millau (France) — Cable-stayed (tallest bridge piers at 343 m).
• Brooklyn Bridge (NYC) — Suspension / cable-stayed hybrid.
• Golden Gate Bridge (SF) — Suspension.
• Mackinac Bridge (MI) — Suspension.
• Sydney Harbour Bridge — Steel arch.
• Auckland Harbour Bridge — Steel box girder (beam!) — This one IS a beam bridge.

🎯 The Real Beam Bridge Hall of Fame

For record spans: Rio-Niterói Bridge (Brazil) — 300 m central steel box girder (longest girder span). Shenzhen Bay Bridge (China) — 2,600 m continuous concrete box girder.

Beam bridges are the workhorses of infrastructure—unflashy, ubiquitous, and essential.