Report: It will take 80 years to fix all struturally weak bridges

CNN - Officials have dubbed Monday's bridge collapse in Tennessee a freak accident, but that might be turning a blind eye to a larger issue. Bridges across the United States are deteriorating, and a new report estimates it will take more than 80 years to fix all of them. More than 47,000 bridges in the United States are in crucial need of repairs, says the American Road and Transportation Builders Association.

• There are 616,087 bridges in America
• Of those, 47,052 (nearly 8%) are "structurally deficient" and need urgent repairs
• 235,020 bridges (38%) need some sort of repair
• Americans cross structurally deficient bridges 178 million times a day, including such landmarks as the Brooklyn Bridge and the San Mateo-Hayward Bridge over the San Francisco Bay
• The average age of a structurally deficient bridge is 62 years