The utility model discloses a go roof beam to increase reinforced (rfd) public road bridge roof beam of rib, including the bridge body, the bottom of bridge body is equipped with the pier backup pad, the lower terminal surface of pier backup pad is equipped with the pier, the inside of bridge body is equipped with hollow beam slab, the top of hollow beam slab is equipped with hollow beam slab potting layer, be equipped with the rib post between the hollow beam slab potting layer, be equipped with rib post backup pad in the hollow beam slab potting layer of rib post upper end, hollow beam slab potting layer's up end is equipped with bridge wholeization concrete layer, bridge wholeization concrete layer's up end is equipped with the bridge floor waterproof layer, the up end both sides of bridge body are equipped with people's bank of china's boss. This go roof beam to increase reinforced (rfd) public road bridge roof beam of rib, rational in infrastructure, the practicality is strong, and through increasing the ribbing post between hollow beam slab, the bridge intensity of reinforcing greatly increases bridge life, and the setting of bridge floor waterproof layer prevents that the rainwater from getting into the inside bridge accelerated ageing that results in of bridge body.