The longest underwater tunnel has just been inaugurated in China

The name of the new tunnel just opened is Taihu, and it is not just any tunnel. He’s underwater! And in particular, it is the longest ‘underwater’ highway tunnel in China. It is located in the eastern part of the country, in the province of Jiangsu. It has been open to traffic in recent days.

The length of the tunnel is 10.79 kilometers and its height reaches 7.25 meters. The tunnel was built under Lake Taihu, which is the third largest freshwater lake in all of China. The world’s largest new underwater tunnel is part of the 43.9-kilometer Changzhou-Wuxi Highway, which has just opened for traffic.

Taihu Tunnel, the beginning of the works

It dates back to 2018 (same year in which Elon Musk started talking about his high-speed tunnel of the future) the start of the works for the construction of the tunnel, for which equipment was used (according to the team that created the project) automatic systems for steel processing and the latest generation of intelligent systems, capable of guaranteeing the absence of dust and sewage discharges.

The Taihu submarine tunnel is the longest in China, moreover it is a very special and unique infrastructure, which stands out from those we are used to seeing. First of all for the colors: it is not gray like any gallery we know, it is colorful and looks like a very welcoming structure. The team of workers who worked on the construction of the tunnel took well 4 years to complete the single project.

The futuristic project

As we have already said previously, and as has in fact been confirmed by the workers, the futuristic and very ambitious project was realized thanks to intelligent systems and special equipment, which made it possible to avoid any risk during the works, to be able to eliminate any possibility. discharge of dust and liquids. As we can imagine, the resulting work is truly unique and surprising. China’s longest underwater highway tunnel opened to traffic last Thursday, on 30 December 2021, in the eastern province of Jiangsu. The facility is part of the Changzhou-Wuxi Highway, which reaches a total length of 43.9 km.

What is the longest underwater tunnel in the world

It is not an easy answer to give, it depends on several factors. Definitely the gallery Seikan, in Japan, and the Channel Tunnel (France-England) are the major candidates. The first is 53.85 kilometers long, the second 50.45 kilometers. It is not easy to decide the winner, given that the Channel has the longest submarine section: 39 kilometers against 23 in the Japanese tunnel.

In any case, the record for the longest underwater tunnel in the world It is held by the Seikan tunnel, built from 1971 to 1988, from an idea conceived since the early twentieth century. Its realization was not easy, given the complex geological context.

Taihu Tunnel, the longest submarine tunnel in the country

The Channel, on the other hand, is the third longest tunnel in the world, and the construction works took place from 1987 to 1994. This is specifically the tunnel that, as we all know, connects France to England by sea and which consists of three different parallel tunnels: two external railways, one internal for transport on rubber, which allows the passage for maintenance and to have an escape route in case of emergency.

It is not over here, there is also another underwater tunnel among the longest in the world, and indeed the largest that can be traveled by car: it is the one that connects Denmark and Sweden, allows rail and road traffic for more than 8 kilometers.

Source: Virgilio Motori by

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