This gantry crane for highway construction is employed to lift the concrete beam or bridge on to the supports of highway construction. It consists of girder longitudinal flat car, girder components, support system, crane transverse, longitudinal shift system, hydraulic system, electric control system, etc.
This highway construction gantry crane can be rail type and step type. The rail type concrete beam launching crane is mainly used for lifting of beams with length not more than 30m. While the step type crane need no rails, which has no pressure and damage to the highway beam/bridge because the legs can be landed on the supports.