Quote:
Originally Posted by mwadswor
I'm too lazy to dig up a link at the moment, but it's been done before. In places like Norway with deep fjords it's cheaper to build a floating tunnel than build a tunnel all the way down to the bottom of the fjord.
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actually, technically it hasnt.
but it is theoretically possible to do and several proposals have been put forward.
http://en.wikipedia.org/wiki/Submerged_floating_tunnel