Quote:
Originally Posted by Wormius
2 things -
1) How did the planners for the Green Line not anticipate the tunnel under the Bow River being such a problem that they are now considering to, or decided already, to kibosh it at the last minute?
2) Is tunneling under a river really that big of a deal? There are lot of places with tunnels running beneath bodies of water. What is so different about our situation? Doesn't every tunnel construction face similar risks of flooding and variations in the topology? I mean, around the world there are some very deep train station platforms. I don't know about 7 stories, but it would make for a unique experience at least.
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The distance under the river is relatively short, and they don't have a lot of space to work with on either side, so I'm guessing going deep isn't an option (I don't know what the max slope a train can run on is, but I would imagine it's fairly shallow).