When complete it will be the world’s longest road and tail tunnel. The tunnel is the UK's first high-speed railway line. Longest railway tunnel; by geodetic distance (of 55.782 km (34.661 mi)) between the two … The underwater tunnel in the Tsugaru Strait links Japan’s main islands of Hokkaido and Honshu. Stretching for 137,000 meters, the Delaware Aqueduct is the longest tunnel in the world. Only continuous tunnel sections should be included, at least 35 km long, excluding branches from the longest tunnel.

A high-speed rail network that carves through the Swiss Alps and features the world's longest rail tunnel is set for completion in 2020. Only continuous tunnel sections should be included, at least 30 km long. A tunnel in the Guangzhou metro is one of the longest tunnels in the world. World Facts The Longest Tunnels In The World. The tunnel also won the Global Engineering 'Century Award'. Description. The tunnel connects Hokkaido Island with the Aomori Prefecture. Wikimedia Commons has media related to Tunnel. The 53.85km Seikan tunnel in Japan is the longest and deepest rail tunnel in the world. The Gotthard Base Tunnel started in 2004, and travels underneath the Swiss Alps for 35.4 miles. The tunnel was the longest underwater tunnel in the world for more than 100 years until 1987 and it was the longest mainline railway tunnel in the UK until its length was exceeded in 2007 by the opening of the two London tunnels of High Speed 1, part of the Channel Tunnel Rail Link. The Seikan Tunnel (Japanese: 青函トンネル, Seikan Tonneru or 青函隧道, Seikan Zuidō), is a 53.85 km (33.46 mi) dual gauge railway tunnel in Japan, with a 23.3 km (14.5 mi) long portion under the seabed of the Tsugaru Strait, which separates Aomori Prefecture on the main Japanese island of Honshu from the northern island of Hokkaido. It passes through Tsugaru Strait connecting the … It connects Folkestone in the UK to Coquelles in France. Earlier this week, the new longest tunnel in the world was completed. Image courtesy of Angaurits. Longest road tunnel in the world. Seventeen years after construction crews started boring beneath the Swiss Alps, the world's longest, deepest tunnel officially opened Wednesday. It is a railway tunnel designed for mass transit. Hakkōda tunnel is the second longest railway tunnel in Japan and sixth longest in the world. This page presents the same tunnels as in list of tunnels by length in separate lists according to the different tunnel types. The GBT has surpassed Japan’s 33.4-mile (53.9km) Seikan tunnel as the world’s longest train tunnel. This page presents a list of the longest railway tunnels of the world, excluding subway tunnel sections .