A Double Girder Bridge Crane is a type of overhead crane. It feature end trucks that operate on fixed rails attached to the top flange of runway girders or beams.
Double girder cranes provide higher lift capacity than single girder cranes, because the hoist is placed between the two cross girders rather than under a single girder. Therefore, the depth of the cross girder is gained in switching to double girders.
Double girder cranes are designed for heavier capacities and often have a continuous duty cycle. These cranes are motorized and typically feature radio controls.