I, too, live in Minnesota. Right after this horrendous catastrophe, my relatives were calling the house like crazy, trying to obtain any information on my family's whereabouts. It just goes to show how unexpected an event this was. :(
To top off the befuddlement, this accident remains an unfathomable mystery. There really is no explanation as to why the bridge, forty years old, should suddenly come to ruins like it did (in case any of you are wondering, forty years is not considered an old age for such a structure). And while construction was being done upon it, it was strictly resurfacing, an operation that has a minute (to nonexistent) chance of causing the subject of work to collapse. Thus the enigma is being stubbornly chipped away while there are still numerous questions waiting for answers.
Until then, my prayers go out to the poor victims (those who are lost, and those who were fortunate enough to survive).