CNN CNN Newsroom May 25, 2013 16:14:00
Questions about our country's infrastructure as a a whole. >> this is the most infamous bridge failure. 2007 in minneapolis. this span gave way during rush hour. federal investigators concluded it was probably a design flaw that led to this. but the american society of civil engineers says of the more than 600,000 bridges in the country, many of them are in some kind of danger of failure for a wide variety of reasons. we're talking about old brings and new ones and big ones and small ones. every place you see yellow, there's a higher percentage of bridges that are in trouble. thousands of brid...
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