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Content will be ported from http://quadrail.pattcom.com/
The information is based on research done by engineer Bill Simpson during the 1990s and early 2000s. Information below is just a placeholder until we get around to porting the rest of the info.
One possible method for crossing the Bering Strait, is long, prefabricated tunnel segments. They would be fabricated on dry land below sea level in an area surrounded by man-
The area would then be flooded and the tunnel segments (temporarily capped on the ends) would be floated to excavated trenches in the Bering Strait between the Diomede Islands, Russia, and Alaska, and then lowered into position. The sloped sections of tunnel would be fabricated on site after sea walls and dikes are built from the coasts of the Diomedes, Russia, and Alaska.