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The inauguration of this the 57-kilometre (35.4-mile) tunnel through the Alps and central Switzerland drew the leaders of France, Germany and Italy for the celebration on Wednesday. At its maximum point, the tunnel is more than 2.3 kilometres (1.4 miles) underground, deeper than any other rail tunnel. The project is expected to reap benefits across Europe for years, including faster travel between Italy and points north and less reliance on trucks that were polluting the Swiss Alps air.
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This tunnel in an Asian country reigned as the world’s longest railway tunnel for nearly 30 years. It travels 53.9 kilometres (33.5 miles) under the Tsugaru Straits, linking the islands of Honshu and Hokkaido. This tunnel hits the lowest elevation for a tunnel 240 metres (790 feet) below sea level.
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More than 13,000 workers took over five years to complete this 50.5-kilometre (31.4-mile) undersea tunnel between Britain and France, which was inaugurated in May 1994. It runs as deep as 75 metres (250 feet) below sea level and had been Europe’s longest tunnel until the new tunnel came along.
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Inaugurated in 2007, the second-longest Swiss tunnel runs for 34.6 kilometres (21 miles) and is part of the same three-tunnel project in Switzerland as the newly-inaugurated tunnel.
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This 28.4-kilometre (17.7-mile) tunnel in Spain was inaugurated in 2005 after about 32 months of construction. It links Madrid, the capital, with north-western Spain.
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