The collapse of the Francis Scott Key Bridge in Baltimore after being struck by a cargo ship has major implications for the US economy, according to officials. The bridge collapse blocks a primary shipping channel accessing the critical Port of Baltimore, one of the busiest in the US. Maryland Governor Wes Moore called it a "national economic catastrophe" impacting people and businesses nationwide. The port handles over 1 million shipping containers annually as well as 850,000 vehicles, making it a key infrastructure for US trade.