Highway and railway dual-purpose bridge

The utility model discloses a highway and railway dual-purpose bridge, which relates to the technical field of bridge structures, and comprises a plurality of steel truss girder sections which are connected along the longitudinal direction of the bridge, and each steel truss girder section comprises two main truss upper chords which are arranged along the transverse direction of the bridge at a preset first width. At least two main truss upper beams are connected between the two main truss upper chords, and a highway bridge deck is laid on the main truss upper beams and the main truss upper chords. The two main truss lower chords are vertically arranged corresponding to the two main truss upper chords respectively, a plurality of main vertical rods are connected between each main truss lower chord and the corresponding main truss upper chord, at least two main truss lower cross beams are connected between the two main truss lower chords and vertically corresponding to the main truss upper cross beams, and two