Al Drago/Bloomberg via Getty Images(BALTIMORE) -- A cargo ship crashed into Baltimore's Francis Scott Key Bridge early Tuesday morning, causing a near-total collapse of the span and halting vessel traffic into and out of the Port of Baltimore.Six construction workers believed to have fallen from the collapsing bridge into the frigid waters of the Patapsco River below are presumed dead, officials said. A search-and-rescue effort has been suspended and will shift to a recovery mission, officials said.Here's how the news is developing:Mar 27, 4:22 PMTimeline shows moments before cargo ship collis...