US had the double-deck before, Nimitz Freeway (Interstate 880)

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送交者: TomBrady 于 2010-08-25, 14:17:09:

回答: 高速公路都修成两层还是比较可行性的计划。上层下层往相反的方向开 由 HHS 于 2010-08-25, 13:32:10:

1989 Loma Prieta earthquake, which happened the World Series, crashed the double- deck. Some people trapped between the decks.

After that, seems no one wants double-deck anymore.



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