The safety board issued recommendations as part of its ongoing investigation into the collapse of Baltimore’s Key Bridge last year after it was hit by a ship.

Federal investigators have determined that the Maryland Transportation Authority (MDTA) failed to complete a crucial vulnerability assessment that could have identified the Francis Scott Key Bridge as being at high risk of collapse from a ship strike well before last year's disaster.

A new NTSB report compiled after the Francis Scott Key Bridge collapse in Baltimore shows that San Francisco's Golden Gate Bridge and four other Bay Area spans may be vulnerable to collapse from a ship strike.