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Modern engineering has produced bridges so long that they stretch farther than many cities. Most of the world’s longest bridges are viaducts—elevated structures that carry highways or high-speed rail lines across rivers, wetlands, farmland, and urban areas.
Top 10 longest bridges in the world (2026)
| Bridge | Length | Country |
|---|---|---|
| Danyang–Kunshan Grand Bridge | 164.8 km | 🇨🇳 China |
| Changhua–Kaohsiung Viaduct | 157.3 km | 🇹🇼 Taiwan |
| Tianjin Grand Bridge | 113.7 km | 🇨🇳 China |
| Cangde Grand Bridge | 105.9 km | 🇨🇳 China |
| Weinan Weihe Grand Bridge | 79.7 km | 🇨🇳 China |
| Bang Na Expressway | 54.0 km | 🇹🇭 Thailand |
| Beijing Grand Bridge | 48.2 km | 🇨🇳 China |
| Lake Pontchartrain Causeway | 38.4 km | 🇺🇸 USA |
| Manchac Swamp Bridge | 36.7 km | 🇺🇸 USA |
| Yangcun Bridge | 35.8 km | 🇨🇳 China |
The world’s longest bridge
Danyang–Kunshan Grand Bridge
- Length: 164.8 km (102.4 mi)
- Opened: 2011
- Carries: Beijing–Shanghai High-Speed Railway
- Interesting fact: It crosses Yangcheng Lake and thousands of bridge piers support the structure across water and marshland.
This bridge is so long that a train traveling at 300 km/h takes about 33 minutes just to cross it.
Longest bridge over water
Lake Pontchartrain Causeway
- Length: 38.4 km (23.9 mi)
- Location: Louisiana, USA
- Opened: 1956 (second span added in 1969)
It is famous for appearing to disappear into the horizon, with water visible in every direction for most of the drive.
Longest road bridge
Bang Na Expressway
- Length: 54 km
- Location: Bangkok, Thailand
- Type: Elevated expressway
For many years it held the record as the world’s longest road bridge.
How China dominates the rankings
China has 7 of the top 10 longest bridges. The reason is its massive high-speed rail network, where long viaducts are used to:
- avoid level crossings,
- reduce land acquisition,
- protect wetlands and farmland,
- maintain very straight rail alignments for trains traveling over 350 km/h.
Length comparison
To understand the scale:
Chart options
Longest bridges in the world
Lengths of the top five longest bridges in kilometers.
- Mumbai to Pune: ~150 km
- Danyang–Kunshan Bridge: 164.8 km
The bridge is actually longer than the distance between Mumbai and Pune.
Quick facts
Longest overall
Danyang–Kunshan
Longest over water
Lake Pontchartrain
Longest road bridge
Bang Na Expressway
Longest in Taiwan
Changhua–Kaohsiung
Longest in the USA
Lake Pontchartrain
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Lengths of the top five longest bridges in kilometers.
| bridge | km |
|---|---|
| Danyang–Kunshan | 164.8 |
| Changhua–Kaohsiung | 157.3 |
| Tianjin | 113.7 |
| Cangde | 105.9 |
| Weinan Weihe | 79.7 |