Explosives break up Key Bridge section atop Dali, readying to refloat vessel

There was a boom, several plumes of smoke and then a splash as millions of pounds of Francis Scott Key Bridge debris fell Monday evening into the Patapsco River. Crews had previously placed linear shaped charges — explosive cutting devices — on the large piece of the bridge that dropped March 26 on the bow of the Dali after the ship struck one of the bridge’s supporting piers.