Launching Gantry is a device that places prefabricated concrete beams onto prefabricated piers. The Launching Gantry belongs to the category of cranes. Its main function is to lift the beam and then transport it to the position and then put it down. But it is very different from ordinary cranes. The conditions required are harsh and there are movements on the beam, or called longitudinal movement. Launching Gantry can be divided into road bridge type, cargo railway bridge type, and passenger railway bridge type.