5. Pennsylvania
>Percent of bridges that are structurally deficient: 13.8%
>Number of bridges: 23,166
4. South Dakota
>Percent of bridges that are structurally deficient: 17.3%
>Number of bridges: 5,886
3. Rhode Island
>Percent of bridges that are structurally deficient: 17.5%
>Number of bridges: 779
2. Iowa
>Percent of bridges that are structurally deficient: 18.9%
>Number of bridges: 23,870
1. West Virginia
>Percent of bridges that are structurally deficient: 20.4%
>Number of bridges: 7,314