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six lanes and 11 km underwater illuminated by millions of LEDs

China has already opened the longest underwater tunnel in the country: the Taihu tunnel. Almost 11 kilometers long and 7.2 meters high, this engineering work located in Jiangsu province passes below Taihu Lake, in eastern China, which is also the third largest freshwater lake in the country.

The construction of this underwater tunnel began in January 2018, and has required an investment of more than 1,500 million dollars.

With six lanes and two directions of traffic

Almost two million cubic meters of concrete, automatic steel processing equipment and intelligent systems were used to carry out the project to prevent the leakage of wastewater and dust, according to the experts. local media.

Avoiding water seepage has been one of the main problems at the engineering level, since the tunnel is located at 20 meters deep. It has two directions of traffic and six lanes thanks to its 43 meters wide, and to access it you have to go through a tollbooth.

Among the technological details highlights the LED lighting with colors, to avoid, he says, driver fatigue.

It is expected to reduce the travel time of its users and to serve as a connection between several cities. The tunnel is part of the 44-kilometer-long Changzhou-Wuxi Expressway, which has also recently been opened to traffic.

Other underwater tunnels famous for their length are the Ryfast, in Norway (also charged) with 14.3 km long, or the Tokyo Bay Aqua-Line, a motorway for vehicles that passes under Tokyo Bay, and that is 9.6 km long.

Although the Taihu is an impressive construction that will represent a new way of traveling by road in China, it is the Eurotunnel or Tunnel of the English Channel which is considered one of the largest underwater tunnels in the world.

It connects the United Kingdom and France by rail and the submerged part stretches for 37.9 kilometers, which can be covered by private vehicle on board the Eurostar train.

And watch out for Faroe Islands, in Denmark. In January 2021 they inaugurated an underwater roundabout, whose construction has taken three years. It is part of a series of 11 km long underwater tunnels connecting the islands of Streymoy and Eysturoy. The structure, made of natural rock and decorated by Faroese artist Tróndur Patursson, resembles a jellyfish and is illuminated with blue and green lights.

Photo | Xinhua News

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Lenny Li

I started to play with tech since middle school. Smart phones, laptops and gadgets are all about my life. Besides, I am also a big fan of Star War. May the force be with you!

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