The NTSB identified 68 bridges across the country, including both the east- and west-bound spans of the Bay Bridge and the Chesapeake City Bridge, with an  an “unknown level of risk of

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 US National Transportation Safety Board has issued a warning to bridge operators, telling them to conduct essential safety checks to avoid another tragedy like the Baltimore Bridge disaster nearly one year ago.