Well, it seem that Rotting Cryptkeeper Fred Phelps has decreed that it was an act of "God" in punishment to Minnesotans for allowing GLBT people to live there.
Apparently, the Phelps clan will be protesting at the funerals of those who died on that bridge when it collapsed.
Quoting PZ Myers of the Pharyngula blog:
I wonder what happens on the day a blood clot stops Phelps' black and shriveled lump of cardiac muscle. Will his followers stand around at his funeral, howling about damned fags and fag enablers?