World Top 10 Longest Underwater Tunnels. In 1975, the Parliament of Norway decided that the main road between Oslo and Bergen would run via Filefjell . Some of them go through mountains and even water to meet the needs of highways and roads. Here are some of the longest tunnels in the US. The longest and deepest railway tunnel in the world, Switzerland’s Gotthard Base Tunnel stretches 35.5 miles (57km) and whisks passengers deep under the Swiss Alps. In 1992, Parliament confirmed that decision, made the further decision that the road should run through a tunnel between Lærdal and Aurland, and passed legislation to build the tunnel. The expert board was led by Qian Qihu from Chinese Academy Engineering. Longest transport tunnels in the world* 1. This tunnel if approved and completed will also be the longest underwater tunnel in the world. More than 14 miles (22.5 kilometers) of the Seikan Tunnel is beneath the water, making it the world’s longest tunnel with an undersea segment. Picture credits: @LeShuttle | Twitter. They handle traffic in efficient ways, and are laid sometimes through mountains and even water to meet the needs of highways and roads. The tunnel was officially opened to rail traffic on March 13, 1988. Top Underwater Tunnels Of The World 1. The Top 4 1. 2. Playing next. Construction of the Jintang undersea tunnel is expected to start this year, while the overall project will take six to seven years to complete.With a maximum depth of 78 meters and a diameter of 14 meters, the 16.2km-long tunnel will be the world’s longest undersea tunnel for high-speed rail upon completion. The United States has some of the longest tunnels in the world. The World's longest Road Tunnels; Country: Tunnel: Length: Date of opening: Norway: Laerdal: 24 510 m: 27.11.2000: China: Zhongnanshan (2 tubes) 18 040 m Pastimers. Nonetheless, the link will be some way off the Macau Bridge in Hong Kong – which is the world’s longest sea crossing bridge-tunnel, at 55km. 4 years ago | 14 views. Construction of this tunnel is expected to cost roughly USD 43 billion and will be part of the Chinese central government’s plan to enhance connectivity in the country’s northeastern region and stimulate regional economic growth. Some tunnels are used to supply water for consumption or hydro-power. Delaware Aqueduct is the longest tunnel in the world at 85 miles long and 13.5 feet wide. Eiksund Tunnel’s World Record To Be Replaced By Rogfast Tunnel. Then, in 1971, a new era of underwater tunneling began with the construction of the Seikan Railroad Tunnel, which currently stretches 53.85 kilometers beneath the Tsugaru Strait in Japan. Follow. Oct 19, 2020. Photo: Skyfish. Country: Japan. Construction work on the tunnel began in 1971 and was completed in 1988. The tunnels serve different purposes in the states they are located. In fact, many of the longest tunnels on this list exist to carry water, and may also be known as aqueducts. 1982 – 2.9km long undersea tunnel that connects Vardø community with mainland Norway. After two years of preparation, the technical proposal for the construction of the subway tunnel has passed the assessment of the expert council. It is the longest road tunnel in the world, succeeding the Swiss Gotthard Road Tunnel. 10 Longest Underwater Tunnels In the World. Largest Tunnels in the US. The Laerdal Tunnel in West Norway is the world's longest road tunnel and cost $153 million to build, which works out at $6,250 per meter. Denmark’s ‘Disappearing Road’ Is Really An Awesome Underwater Highway - … 2:01. Second longest railway tunnel until 2016. Norway is currently building another subsea tunnel called the Rogaland Fixed Link or the Rogfast Tunnel that when successfully completed will set the record of being the world’s longest and deepest road tunnel. Rogfast tunnel in Norway – construction having started in 2018, at 27 km length, 392 m depth, it will be the longest road tunnel and deepest undersea tunnel in the world. Did You Know About This Longest Underwater Tunnel #UnboxFactory This tunnel under the Baltic Sea will be the longest immersed tunnel in the world. It will connect the municipalities of Randaberg and Bokn in Rogaland county, Norway. It is the longest rail tunnel in the world, although the longer Gotthard Base Tunnel in Switzerland is under construction and scheduled to open to traffic in 2017. China’s fast train will have the first and longest underwater tunnel, local media said, Monday, August 3, 2020. As soon as 2029, the Fehmarnbelt Tunnel which, at its deepest point, will be 131 feet under the Baltic Sea, will easily connect Germany and Denmark. But what’s most impressive is the length: at nearly 18-km long, the completed structure will become both the longest road and rail tunnel and the longest immersed tunnel in the world, surpassing the 13-km Marmaray Tunnel in the Bosporus, Turkey. Browse more videos. Today, it is one of the most significant train routes of London and an interesting tourist attraction. Eben Diskin. Length: 53.9 kms. Seikan Tunnel - Japan. 2. The Longest Underwater Tunnel In The World this strange-looking beast in tokyo is an artificial island and tourist attraction by the name of umihotaru (translation: marine firefly) which forms part of the tokyo bay aqualine, a bridge-tunnel that connects kawasaki and kisarazu. Gotthard Base Tunnel, Switzerland – land railway tunnel beneath Alps connecting Uri and Ticino, opens 2016 – 35.5 miles . 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