An illustrated view of a tailgate gap prevention device for preventing a gap between a tailgate and a box of a vehicle. The tailgate gap prevention device is useful for preventing debris, ice, snow, etc. from falling into and being trapped in the gap between the tailgate and the box of the vehicle. The tailgate prevention device provides a quick, easy and safe cleanup of the truck box where the gap is not collecting debris, ice, snow etc. The tailgate gap prevention device has a tailgate bridge and a plurality of hinges. The hinges are screwed onto the tailgate bridge and onto the box of a vehicle. Once installed, spring-loaded hinges will cause the tailgate bridge to slide into position preventing the gap from debris, ice, snow, etc.