Published On Oct 14,2017
Top 10 Longest Underwater Tunnels In The World !! Information Side
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1. Seikan Tunnel -- 53.9 km -Japan's Seikan Tunnel is the longest underwater tunnel in the world, and is located beneath the Tsugaru Strait. The tunnel connects Hokkaido Island with the Aomori Prefecture. The tunnel was constructed as the government's response to the unfortunate sinking of five ferry ships due to a typhoon back in 1954, which resulted in public outrage. As engineers saw that extreme weather conditions made bridges too risky, an undersea tunnel would be the safest way to go. The tunnel was completed in March of 1998, which saw the start of all railway transport using the tunnel.
2. Channel Tunnel -- 37.9 km-The Channel Tunnel Connects Folkestone in the United Kingdom to Pas-De-Calais, in northern France. It is owned by Eurotunnel, and has single direction tunnels where the national freight trains, Eurostar, and the Eurotunnel shuttle runs. A central service tunnel is connected to all of the lanes, which also provides access to maintenance and emergency teams. The service tunnel also provides a safety point in the event of an emergency, and passengers would need to be evicted. Special multi-functional vehicles were created for traveling within the service tunnel, designed to arrive at the scene or bring passengers to safety in record time.
3. Tokyo Bay Aqua line -- 15 km-The Tokyo Bay Aqua line is also recognized as a toll highway which spans the Tokyo Bay of Japan. The Tokyo Bay Aqua line opened to the public in December 1997, since planning and construction took 31 years. The tunnel connects Kisazaru City to Kawasaki City; and before the tunnel to cross both cities it required one to drive 100 kilometers along the Tokyo Bay; or to take a ferry.
4. Bomlafjord Tunnel -- 7.8 km-The Bomlafjord Tunnel is part of the Triangle Link Project, together with 3 other bridges designed to connect the islands of Stord, Bomlo, and Fittjar in Norway.
6. North Cape Tunnel -- 6.8 km -The North Cape Tunnel is one of the longest underwater tunnels in Norway, and is located in the Nordkapp Municipality in the northern area of the country. It is located beneath the Magerøysund.
7. Severn Tunnel -- 3.62 km-Located in the United Kingdom, the Severn Tunnel connects South Gloucestershire to Monmouthshire, beneath the River Severn. Construction of the Severn Tunnel was carried out from 1873 to 1886, by the Great Western Railway.
9. Sydney Harbour Tunnel -- 2.8 km-The Sydney Harbour Tunnel became operational in August of 1992, and connects the Warringah Freeway to the Eastern Distributor as a means of decongesting the Sydney Harbour Bridge.
10. Thames Tunnel -- 0.4 km-The Thames Tunnel is the oldest underwater tunnel in the world and opened back in 1843.
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