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Originally Posted by dleung
I'm curious as to why it seems as if almost all multi-level parking in Chicago are in above ground parkades. Does it have something to do with water tables or soil conditions? In Toronto and Vancouver, all new multi-level parking is underground,...even for waterfront sites, excavations for condo parking routinely go 4-5 stories below lake/sea level. ..
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I can't speak to why it isn't more common, but to answer your first question, yes, there are a decent number of examples of underground parking in Chicago. It's certainly not super-common, but it does exist. The Sears Tower has some. The AT&T building has some. The building with the AMC River East 21 theatre has some. And there are other examples.