Norway building world’s deepest road tunnel plunging 1,280 feet under the sea
SMRTR summary
Norway is constructing the world's deepest undersea road tunnel, plunging 1,280 feet below sea level and stretching 17 miles to connect Stavanger and Bergen without ferries. The $2.4 billion Rogfast project, expected to complete by 2033, will cut travel time by 40 minutes while facing major engineering challenges from saltwater leaks and extreme underwater pressure.
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