The collapse of the I-35 bridge over the Mississippi River at Minneapolis struck me as a déjà vu moment. It seemed like yesterday when pictures of a bridge with cars strewn into a river were all over the news.
I found an article about that I-40 bridge disaster and many others. Naturally, by this morning, Wikipedia had already updated its article on such disasters.
While quite spectacular when they happen, it is not the kind of occurrence that happens often. Many times it is because of an outside agent causing the bridge to weaken. Sometimes it is poor design or construction. Sometimes is is poor maintenance.
But always it seems the the reaction is "Wow, we didn't see that coming."
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