T4America, a pro-transportation advocacy group, is releasing a new report today on the sorry state of US bridges.
The Fix We're In For: The State of Our Nation's Bridges
The results are well known, and worth repeating, many bridges are structurally deficient. The average bridge is over 42 years old. There are insufficient funds being spent on repair/replacement/rehabilitation. Unless something is done, this will only get worse (entropy and all), bridges do not repair themselves.
Fix It First remains the battle cry.