Single-box multi-chamber box girder bridge

The utility model provides a single-box multi-chamber box girder bridge. The bridge deck structure comprises a lower structure, a single-box multi-chamber box girder, a bridge deck cast-in-place layer, transverse prestress steel beams, first longitudinal prestress steel beams and second longitudinal prestress steel beams. The single-box multi-chamber box girder comprises two prefabricated boundarybeams and a plurality of mutually connected prefabricated middle beams located between the two prefabricated boundary beams, and the prefabricated boundary beams and the prefabricated middle beams ofthe I-shaped beam structure can reduce the requirement for hoisting equipment in hoisting construction and reduce the construction cost of the single-box multi-chamber box girder bridge. The stress states of the middle parts and the lower parts of the prefabricated edge beams and the prefabricated middle beams are respectively improved by the first longitudinal prestressed steel beams and the second longitudinal prestress