The utility model relates to a new and old bridge widening structure capable of improving the influence of shrinkage and
creep differences. A widening position
asphalt concrete pavement layer, a
zinc-containing steel plate, a waterproof roll, a profile steel rib plate, a
cork block and a longitudinal steel plate are arranged at the widening position of an old bridge
box girder and a new bridge
box girder. The longitudinal
steel plates are arranged at intervals in the longitudinal bridge direction, each longitudinal steel plate is welded to the corresponding load-bearing
steel bar in the
box girder, grooves are reserved in the two ends of each longitudinal steel plate, and the grooves in the two ends of each longitudinal steel plate are filled with the
cork blocks. The
zinc-containing
steel plates are vertically arranged between every two adjacent longitudinal
steel plates, the width-spliced
asphalt concrete pavement layer is laid on the tops of the
zinc-containing steel plates, kerfs in the longitudinal bridge direction are formed in the left-right middle positions of the surface of the width-spliced
asphalt concrete pavement layer, and the kerfs are filled with asphalt horseshoe fat. According to the utility model, a new bridge structure and an old bridge structure are connected together, and the damage form is always controlled in an asphalt horseshoe fat area, so that the damage of a
bridge deck pavement layer is prevented, and the overall stability of the structure is also protected.