America's Broken Bridges in Dire Need of Repair

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Five years after the Minneapolis I-35W span suddenly collapsed in August 2007, killing 13 people and injuring 145 others, the U.S. still has 18,000 similarly designed spans, known as fracture-critical bridges, that need continual attention and money for inspections at a time when funding for maintenance is drying up. A March 22 article by Bloomberg Businessweek examined the issues. Read more.