(CNN)After days of digging through 950 tons of steel and concrete, the remains of all six victims of the pedestrian bridge collapse in Florida have been recovered, authorities say. Rescuers have worked day and night to extract the victims and mangled cars after the bridge crumbled Thursday. "I believe that is the final count," Miami-Dade County Police Director Juan Perez said. "This ends with a tragedy of six. ... We are pretty confident that no one is left.