Waterproof polymer alloy cable bridge

The utility model discloses a waterproof polymer alloy cable bridge, which comprises a bottom plate, side plates arranged on two sides of the bottom plate, a top plate arranged at the upper ends of the side plates, a connecting plate arranged on one side plate and used for being spliced with the other side plate, and the width of the top plate is not less than the distance between the outer walls of the left side plate and the right side plate. A clamping mechanism is arranged between the top plate and the side plate, and the clamping mechanism and the top plate are integrally formed; the clamping mechanism comprises an arc-shaped hook plate arranged on one side of the top plate, a clamping groove I matched with the arc-shaped hook plate is formed in the outer wall of the side plate, a clamping plate is arranged on the lower surface of the other side of the top plate, and the clamping plate is used for clamping the inner wall and the outer wall of the side plate; the cable tray can prevent water from seeping