It is common for bridges to be seen in the built environment, as they connect two locations, usually separated by a body of water. A bridge is yet another sort of technology that allows people to pass over an obstacle without the need for assistance.
The World’s Longest Bridge
The Danyang–Kunshan Grand Bridge, which was finished in 2010 and officially opened in 2011, has a total length of 102.4 miles, making it the world’s longest bridge in terms of length (164.8 kilometers). The bridge is located on a train line that connects the cities of Shanghai and Nanjing in the province of Jiangsu.
Did You Know?
- The Danyang-Kunshan Grand Bridge, which employed 10,000 workers, took four years to build and cost approximately $8.5 billion.
- The Danyang-Kunshan Grand Bridge has reduced the trip time from Ningbo to Jiaxing from 4.5 hours to just two hours, compared to the previous 4.5 hours it took on public transportation.
- The Yangcheng lake part of the bridge is supported by 2000 concrete pilings and carries 450,000 tonnes of steel, while the remainder of the bridge is supported by 9500 concrete pilings.
- The bridge was built to resist typhoons and earthquakes of magnitude 8, as well as a direct hit by a naval vessel weighing 300,000 tonnes.
- The rail transportation part of the facility, the (Tianjin Grand Bridge) Langfang–Qingxian viaduct, spans a distance of 113.7 kilometers (70.6 mi), making it the world’s fourth longest bridge.