Road and bridge construction protection device

The utility model discloses a road and bridge construction protection device which comprises a base, a first protection structure and a second protection structure, and the first protection structure and the second protection structure are arranged on the base front and back. The second protection structure comprises a second fixing frame, a lifting assembly and a second protection net. The second fixing frame is fixed to the position, on the back side of the first protection structure, of the base, the second protection net is arranged in the second fixing frame and connected with the inner side wall of the second fixing frame through a lifting assembly, and the lifting assembly can drive the second protection net to move up and down along the inner side wall of the second fixing frame. The protective device has the advantages that the first protective net is designed to preliminarily protect a construction site; and the height-adjustable second protective net is designed to meet the requirements of the cons