Noise reduction barrier for municipal road and bridge construction

The utility model discloses a municipal road bridge construction noise reduction barrier which comprises a base, the center of the top of the base is connected with a concave frame in a sliding mode, the left side and the right side of the top of the base are connected with sound insulation plates in a sliding mode, the sides, close to each other, of the sound insulation plates are tightly attached to the connecting position of the concave frame, and the tops of the sound insulation plates are connected with clamping plates in a buckled mode. The inner surface of the clamping plate is buckled with the top of the concave frame, springs are fixedly connected to the left sides and the right sides of the front face and the back face of the base, the base and the concave frame are arranged, the sound insulation plate can be limited, the springs are arranged to drive the moving blocks to move in the opposite directions, the moving blocks drive the pin rods to move in the opposite directions, and the sound insulatio