Quote:
Originally Posted by Deez
Is the 50M$/km dollar tag just for boring, or does it include all components?
As an example of some of the extra goodies that go along with highway tunnels, here's a satellite shot of a multi-million dollar ventilation building that circulates air in Boston's "Big Dig" tunnels (this is one of 7).
http://www.satellite-sightseer.com/id/12698
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Yeah, sorry about that. I have been thinking about trains too much lately. A 4-lane tunnel with road surface and ventilation should run about $150M per Km.
I have no idea how the study calculated $500M for a bridge and then calculated over $1,500M for a tunnel! At there rates, the DOTT would be about $2,000M! It looks to me as if the tunnel idea was being discarded through any means.
SUNK TUNNELS are anything but revolutionary and have been used for decades in North America for under water tunnels. The problem with them is that, generally, a trench is dredged for the tunnel to sit in. This would not be acceptable to the environmentalists. Although it would result in an in-expensive tunnel link, the idea will not be pursued.