The National Transportation Safety Board said proper risk assessment by the state of Maryland could have averted the collapse of Baltimore’s Key Bridge that killed six road workers in 2024.

Baltimore’s Francis Scott Key Bridge was at high risk of collapsing if it was struck by a ship, federal safety investigators said Thursday, but Maryland officials never conducted a review — and even lacked the necessary data to do one.

Sixty-eight bridges across the US should be assessed to see if they are at risk of collapse if hit by a ship, transportation safety officials found, while urging the bridges’ owners to undertake immediate vulnerability assessments.