At 18:19 CO 15 was dispatched to the Milton River Bridge for a multiple vehicle MVA. Chief 1503 arrived to find three vehicles in the roadway with all occupants out of the vehicles. The box was held to MICU and Rescue. Rescue 15 arrived and took care of hazards on two of the vehicles. Crews were then dispatched to assist Company 2 with a water rescue. Units on scene: Chief 1503 Derr, Rescue 15, MICU 15, Traffic 15, 1561, 1563, and Milton Police Department.