I-35 Bridge Collapse: The NTSB's Report
Are you're interested the collapse of the I-35 bridge in the Twin Cities and the claims that have followed in its wake? Then if you haven't already, take a look at the Report prepared by the National Transportation Safety Board on the disaster. It's informative, goes into more detail than most of the press coverage, but it's still readable for people like me who aren't engineers (well at least the Abstract and Executive Summary sections at the beginning are).
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