SWEETWATER, Fla. (CBS News) - Crews have been working non-stop to reach and recover victims of the bridge collapse at Florida International University. The death toll is at least six, including 18-year-old Alexa Duran, a student at the school. Her car was crushed by the footbridge. Also, 37-year-old Navaro Brown, a bridge worker who was on the span when it collapsed, died. Two of his co-workers are among the nine injured.