Top 5 Longest Bridges in 2025: Key Facts and Engineering Highlights
Top 5 Longest Bridges in 2025: Key Facts and Engineering Highlights of October 2025: These viaducts dominate global rankings by total length, per Wikipedia and engineering reports. All are concrete-based for seismic and high-speed durability, supporting rail networks.
Summary Table:
| Rank | Bridge Name | Length (km) | Location | Material | Type | Construction (Years) | Cost (USD) |
|---|---|---|---|---|---|---|---|
| 1 | Danyang–Kunshan Grand | 164.8 | Jiangsu, China | Prestressed Concrete | Viaduct | 2006–2010 (4) | $8.5B |
| 2 | Changhua–Kaohsiung | 157.3 | Taiwan | Post-tensioned Concrete | Viaduct | 1999–2004 (5) | ~$5.5B |
| 3 | Kita–Yaita | 114.4 | Tochigi, Japan | Reinforced Concrete | Viaduct | 1978–1982 (4) | ~$1.2B (adj.) |
| 4 | Tianjin Grand | 113.7 | Tianjin, China | Prestressed Concrete | Viaduct | 2008–2010 (2) | ~$3B (est.) |
| 5 | Cangde Grand | 105.9 | Hebei, China | Prestressed Concrete | Viaduct | 2008–2010 (2) | ~$2.5B (est.) |
Notes: Costs for #4–5 estimated from $32.5B Beijing–Shanghai HSR share; #3 inflation-adjusted from 1980s data. Lengths above land/water.
1. Danyang–Kunshan Grand Bridge
- Length: 164.8 km
- Location: Jiangsu Province, China (Beijing–Shanghai HSR)
- Material: Prestressed concrete box girders
- Type: Elevated viaduct (9 km over water)
- Construction Time: 2006–2010 (4 years, 10,000 workers)
- Cost: $8.5 billion (~$51M/km)
- Key Features:
- Supports 350 km/h trains; 9,000 pillars for flood resistance.
- Guinness record holder since 2011; handles 200M+ passengers/year.
2. Changhua–Kaohsiung Viaduct
- Length: 157.3 km
- Location: Changhua to Kaohsiung, Taiwan (THSR)
- Material: Post-tensioned concrete segments (35m spans)
- Type: Single-column viaduct
- Construction Time: 1999–2004 (5 years)
- Cost: ~$5.5 billion (major THSR component)
- Key Features:
- Earthquake-resistant design (flexible columns); typhoon-proof.
- Cuts Taipei–Kaohsiung travel to 1.5 hours; 200M+ passengers by 2012.
3. Kita–Yaita Viaduct
- Length: 114.4 km
- Location: Tochigi/Fukushima, Japan (Tōhoku Shinkansen)
- Material: Reinforced concrete girders
- Type: Multi-span viaduct
- Construction Time: 1978–1982 (4 years)
- Cost: ~$1.2 billion (2025-adjusted)
- Key Features:
- Pioneered 320 km/h bullet trains; seismic upgrades post-2011 quake
- Spans rural valleys; minimal maintenance over 40+ years.
4. Tianjin Grand Bridge
- Length: 113.7 km
- Location: Hebei/Tianjin, China (Beijing–Shanghai HSR)
- Material: Prestressed concrete box girders (32m, 860 tons each)
- Type: Railway viaduct
- Construction Time: 2008–2010 (2 years)
- Cost: ~$3 billion (HSR portion estimate)
- Key Features:
- Navigates urban sprawl/soft soils; wind-resistant.
- Halves Beijing–Tianjin commute; boosts regional logistics.
5. Cangde Grand Bridge
- Length: 105.9 km
- Location: Hebei Province, China (Beijing–Shanghai HSR)
- Material: Prestressed concrete
- Type: Elevated viaduct (3,092 piers)
- Construction Time: 2008–2010 (2 years)
- Cost: ~$2.5 billion (HSR portion estimate)
- Key Features:
- Engineered for M8 earthquakes/floods; modular build.
- Crosses the Yongding River basin, enhancing connectivity in northern China.
These structures underscore Asia’s HSR dominance, with concrete viaducts prioritizing efficiency over suspension aesthetics. No ranking shifts are expected by end-2025.
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