A bridge crane is a device used to place pre-fabricated beams onto pre-fabricated bridge piers. It falls under the category of cranes, primarily due to its function of lifting beams and then lowering them into position.Bridge cranes are significantly different from the general notion of cranes. They have stringent requirements and involve the movement of beams, also known as longitudinal shifting. Bridge cranes are categorized into several types, such as for constructing highway bridges, conventional railway bridges, and dedicated passenger railway bridges.