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Friday, October 11, 2024

Top 10 longest bridges in the world

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Bridges are among the most awe-inspiring engineering feats in human history, showcasing ingenuity, skill, and the desire to connect people across challenging terrains.

These monumental structures are not only functional but also symbols of human determination to overcome nature’s barriers.

In this article, we’ll explore the top 10 longest bridges in the world, marveling at the engineering accomplishments that make them possible.

1. Danyang–Kunshan Grand Bridge, China

  • Length: 164.8 kilometers (102.4 miles)
  • Completed: 2010
  • Purpose: High-Speed Rail The Danyang–Kunshan Grand Bridge is the longest bridge in the world, stretching a remarkable 164.8 kilometers. It was built as part of the Beijing–Shanghai High-Speed Railway, cutting through rivers, lakes, and rice paddies. This bridge exemplifies China’s dedication to rapidly expanding its infrastructure, allowing for faster connections between its major cities.

2. Changhua–Kaohsiung Viaduct, Taiwan

  • Length: 157.3 kilometers (97.8 miles)
  • Completed: 2007
  • Purpose: High-Speed Rail The Changhua–Kaohsiung Viaduct in Taiwan is part of the Taiwan High-Speed Rail network. Designed to withstand earthquakes, this viaduct is vital for safe travel through a seismically active region. It connects key cities, providing an efficient and reliable transportation link along Taiwan’s western corridor.

3. Tianjin Grand Bridge, China

  • Length: 113.7 kilometers (70.6 miles)
  • Completed: 2010
  • Purpose: High-Speed Rail The Tianjin Grand Bridge serves the Beijing–Shanghai High-Speed Railway and is one of China’s most important railway bridges. Stretching over 113 kilometers, it is one of the longest bridges in the world and one that facilitates fast travel between Beijing and Shanghai, accommodating trains traveling at speeds of up to 350 km/h (217 mph). This bridge plays a crucial role in the country’s high-speed rail network.

4. Cangde Grand Bridge, China

  • Length: 105.8 kilometers (65.7 miles)
  • Completed: 2010
  • Purpose: High-Speed Rail Another engineering marvel on the Beijing–Shanghai High-Speed Railway, the Cangde Grand Bridge is notable for its length and strength. It was constructed to withstand the natural challenges of the region, including earthquakes. The bridge features more than 3,000 piers, providing stability and resilience against seismic activity.

5. Weinan Weihe Grand Bridge, China

  • Length: 79.7 kilometers (49.5 miles)
  • Completed: 2008
  • Purpose: High-Speed Rail The Weinan Weihe Grand Bridge is part of the Zhengzhou–Xi’an High-Speed Railway, a key component of China’s extensive rail network. It crosses the Weihe River, and its construction required sophisticated engineering to ensure stability and longevity. The bridge’s primary purpose is to connect key regions of China, enhancing economic growth and transportation efficiency.

6. Bang Na Expressway, Thailand

  • Length: 55 kilometers (34 miles)
  • Completed: 2000
  • Purpose: Elevated Highway The Bang Na Expressway is one of the world’s longest road bridges and serves as an elevated highway in Bangkok, Thailand. It spans 55 kilometers and is primarily used to alleviate traffic congestion in and around the capital city. The bridge runs above a busy urban area, with six lanes of traffic to help facilitate the efficient movement of vehicles.

7. Beijing Grand Bridge, China

  • Length: 48.1 kilometers (29.9 miles)
  • Completed: 2010
  • Purpose: High-Speed Rail The Beijing Grand Bridge is also part of the Beijing–Shanghai High-Speed Railway. Covering over 48 kilometers, it connects key parts of the rail line, contributing to a seamless high-speed connection between Beijing and Shanghai no wonder it is one of the longest bridges in the world. It was built with precision to ensure the durability and safety of trains traveling at high speeds.

8. Lake Pontchartrain Causeway, USA

  • Length: 38.4 kilometers (23.9 miles)
  • Completed: 1956 (first span), 1969 (second span)
  • Purpose: Highway The Lake Pontchartrain Causeway is the longest continuous bridge over water in the world, consisting of two parallel spans that stretch across Lake Pontchartrain in Louisiana. It provides a vital link between Mandeville and Metairie, drastically reducing travel time for commuters and serving as a lifeline for the communities on either side of the lake. The bridge’s iconic structure is a symbol of American ingenuity, standing resiliently through hurricanes and other natural challenges.

9. Line 1 Wuhan Metro Bridge, China

  • Length: 37.8 kilometers (23.5 miles)
  • Completed: 2009
  • Purpose: Urban Transit Rail The Wuhan Metro Bridge is an integral part of the Wuhan Metro system in China. It spans 37.8 kilometers and plays a crucial role in the city’s public transportation network, providing an efficient means of travel for millions of people. Its construction helps reduce traffic congestion and offers a sustainable alternative for urban mobility.

10. Manchac Swamp Bridge, USA

  • Length: 36.7 kilometers (22.8 miles)
  • Completed: 1979
  • Purpose: Highway The Manchac Swamp Bridge is an elevated bridge that runs through Louisiana’s Manchac Swamp. As one of the longest bridges over water in the United States, it plays a crucial role in the Interstate 55 corridor, connecting New Orleans to Baton Rouge.

Built over challenging terrain, the bridge is a testament to the skill required to construct major infrastructure projects in swampy, wetland areas. Its elevated design minimizes environmental disruption, allowing vehicles to pass through the swamp without impacting the delicate ecosystem below.

Conclusion

The longest bridges in the world represent much more than just an engineering challenge—they are vital links that bring communities closer, facilitate trade, and promote economic growth. These structures span rivers, lakes, highways, and urban landscapes, each one uniquely designed to overcome the geographical challenges of its environment.

From China’s massive high-speed rail viaducts to the United States’ iconic causeways, the sheer size and scale of these bridges are awe-inspiring. As engineering technology continues to advance, we can expect to see even more ambitious projects that push the limits of what’s possible, connecting not just cities and countries but entire continents.

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