They are actually looking to widen the ones on the endlines and add field level circulation on the sidelines. I guess it isn't especially considered unsafe, but inconvenient at any rate. At 107,000 pre renovation Michigan stadium didn't have a ton more exits, and they certainly weren't much wider and it emptied out reasonably smoothly, so I wouldn't be too worried about that aspect of the Rose Bowl, or May Day for that matter.
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