Published On: Sun, Jan 7th, 2024

The world’s longest bridge that’s the length of four marathons built to withstand typhoons | World | News


The world’s longest bridge has sent people into a frenzy after everyone realised just how long it is, and what it’s designed to withstand. The Chinese super-structure is an engineering masterclass which is the envy of the world.

At an official length of 102 miles, the Danyang-Kunshan Grand Bridge forms a hefty part of the Shanghai-Beijing railway line.

The viaduct is the same length as the sum of four marathons and lets trains zoom through.

On average, the bridge stands at a stunning 100 feet off the ground, while its width is a whopping average of 260 feet.

The huge infrastructure project didn’t come cheap though – the equivalent of £6.9 billion was spent, at around £41.5 million per mile.

The bridge runs roughly parallel to the iconic Yangzte River – about 8 to 80km south of it – and crosses lowland rice paddies and canals. Perhaps most strikingly, there is a huge section across 5.6 miles of open water – the Yangcheng Lake – where special measures were forced into place.

There are a mind-boggling 2,000 pillars and steel cables in this wet section, and it was built to withstand natural phenomena like magnitude 8 earthquakes and strong typhoons – the latter of which will get increasingly more intense and frequent thanks to man-made climate change.

Designed and built by the government-funded China Road and Bridge Corporation, the route goes from Shanghai to Nanjing, passing alongside various huge cities including Danyang, Changzhou, Wuxi and Suzhou. It was designed to relieve traffic on the roads by getting people on the rapid train – although there are also two lanes for driving on the bridge.

The second-longest bridge in the world is in nearby Taiwan, which at 97.5 miles connects Baguashan to Zuoying, all the while preventing seismic activity from bringing it down.

Nevertheless, China dominates the top ten list for longest bridges, coming in at third, fourth, fifth, seventh and ninth, according to the BBC.



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