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.

The NTSB urges immediate safety assessments for four Houston area bridges at high risk of collapse due to vessel strikes.