Six people who went missing when a bridge in Baltimore near Washington collapsed after a cargo ship crashed into it are presumed dead, the US Coast Guard said as it announced that the search for survivors had been suspended. Rear Admiral Shannon Gilreath said that, based on the length of time that the search has been going on, and the water temperatures “we do not believe that we are going to find any of these individuals still alive.” Gilreath added that the “search and rescue effort” would be suspended as of 7:30 pm (2330 GMT). Maryland State Police’s Roland Butler said the operation would c…