"There are 7,980 bridges in the U.S. that are both structurally deficient, meaning they have received a "poor" rating, and fracture-critical, meaning they lack support to hold up the bridge if a single component fails. To give you an idea of the significance of these designations, the I-35W Bridge in Minneapolis was both structurally deficient and fracture-critical before it collapsed."
Barry B. LePatner is the author of Too Big to Fall: America's Failing Infrastructure and the Way Forward
Huffington Post
