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World's 1st 'floating tunnel' proposed

from NBC News

Steep, icy mountains and deep fjords make western Norway famously scenic, but they also make life difficult for motorists. With seven ferries along the way, the almost 700-mile trip between the cities of Kristiansand in the south and Trondheim in the north typically runs about 21 hours — at an average speed of about 30 miles an hour. But that could soon change. A $40-billion infrastructure project being planned by the Norwegian government aims to replace the ferries with bridges, conventional tunnels and what could be the world's first "floating tunnel." But Michael Mooney, a civil and environmental engineer at the Colorado School of Mines, said the trickiest part of designing and building a first-of-its-kind large structure would be anticipating all the possible hiccups. more

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