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One thing to consider is that the more recently a country develops the easier it is to have nice infrastructure because they had a better technological foundation to work with, and a stronger labor force. The U.S was one of the first industrialized countries, and consequently must tear down the old before putting in the new. As for transportation, for the country the size of the U.S, with cities all throughout, it makes more sense to have a highway system than a train system. Europe is much more dense than the U.S overall. China's cities are coastal, and Japan is a tiny dense island.

Some state have worst infrastructure than others, but if you look at the best states, that is probably the best one can hope for currently, until new cheaper technologies make it reasonable.