Quote:
Originally Posted by 65MAX
I don't think a tunnel needs to start at 13th and Holladay since there's no real impediments to surface MAX until you get to the Convention Center and Rose Quarter. That's where the grade separation becomes crucial and where the portal should be placed.
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Right, but heading westward from 7th, you're already heading downhill - you'd have to go really steep to descend underground there. The only way I can see it working would be to turn N along Interstate west of RQ and descend there, where it's relatively flat (though still significantly higher than the river). Or by going underground at 13th and descending slowly through the Lloyd. But hey, pipe dreams, right?