The National Transportation Safety Board recommended that 68 bridges undergo vulnerability testing nearly one year after the Francis Scott Key Bridge collapsed in Baltimore.

NTSB Chairwoman Jennifer Homendy said a vulnerability assessment could have prevented the deadly Key Bridge collapse. The bridges recommended for assessment include the country’s most iconic structures, such as the Brooklyn Bridge in New York, the Golden Gate Bridge in California, the Chesapeake Bay Bridge in Maryland, and the Mackinac Bridge in Michigan.