Road and bridge engineering warning device

The utility model discloses a road and bridge engineering warning device in the technical field of road and bridge engineering warning devices. Supporting wheels are fixedly arranged on the outer walls of the two sets of lower turning plates. Wherein moving wheels are fixedly arranged at four corners of the bottom of the mounting bottom plate; a fixed seat is fixedly arranged in the center of thetop of the mounting bottom plate; the top of the fixing base is movably connected with a screw joint rod in a screw joint mode. The top end of the screw joint rod is movably connected with a bearing seat; a protection box is fixedly arranged at the top of the bearing seat; a warning lamp is fixedly arranged at the top of the protection box; hinge seats are fixedly arranged on the left and right side walls of the protection box and the tops of the two groups of lower turning plates; screw joint cylinders are movably hinged between the two hinge joint seats on the left side and the two hinge joint seats on the right sid