A study by the American Road & Transportation Builders Association says 55,710 bridges in the U.S. are structurally deficient, which means a bridge is in need of repair. This does not mean the bridges are necessarily unsafe (yet) but is an indicator of the overall degrading conditions American infrastructure is currently facing.

Still, that is almost 10 percent of all American bridges, which number over 612,000. Iowa, Pennsylvania, Oklahoma, Missouri and Nebraska are the states with the most amount of bridges in need of repair.

Alison Black, the transportation association's chief economist and author of the report, told CNN it would take 20 years to repair all the bridges on the list.

"If we are going to lay that foundation for economic growth, we need to invest in a modernized highway system," Black added.

States with the fewest number of deficient bridges are Nevada, Delaware, Utah and Hawaii. Twenty-three states have more than 9 percent of their bridges that are structurally deficient.

No, your fear of collapsing bridges doesn't need to ratchet into high gear (we said, unconvincingly). The study is just highlighting the bridges that need repair sooner rather than later. If you want to see which bridges near you may need repair, you can check out this handy (horrifying) map.

Hat tip Autoblog

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