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Old 2008-07-28, 21:40   #11
Brian-E's Avatar
Jul 2007
The Netherlands

2·3·5·109 Posts

Originally Posted by davieddy View Post
There is not much mystery about how a tunnel interfaces with
a bridge in the middle of the sea: they build a rectangular island.
Well, that was already clear to me (though is there any particular reason why you say "rectangular"? Does it need to be?). However I still consider it a feat of engineering. It would be easier, I guess, if the water at that point is particularly shallow. Now I think about it, probably that is indeed the case - there are likely to be shallow areas in wide rivers and sea inlets everywhere, and presumably one such area will have been selected on which to build the artificial island.

The question about which bridge/tunnel combination it is does not quite seem to have total consensus here, but the proponents of the Monitor-Merrimac Memorial Bridge-Tunnel seem to have produced the best supporting evidence.
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