Liuzhou Bailu Bridge is a continuous steel truss arch bridge with a main span of 288 m, using two main trusses with a center distance of 37 m. In view of the characteristics of the side span truss beam with low height and large transverse width, the web members are designed as variable cross-sections, and the adverse effects of the transverse frame effect are eliminated by reducing the linear stiffness and increasing the cross-sectional area. The relatively simple rhombus truss design is adopted in longitudinal connection, taking into account the mechanical rationality and aesthetic properties of the structure. The orthotropic integral bridge deck with dense beam system is adopted to avoid the out-of-plane bending of the beam during the interaction between the deck and the main truss. Flexible suspenders are adopted for the improvement of the aerodynamic performance of the structure and the reduction of influence of wind-induced vibration.The side-span flat-chord main truss is constructed with the bracket and semi-cantilever method. The construction plan of cantilever erection by arch crane with assistance of temporary piers is adopted for the middle-span arch ring, and the bridge deck is erected synchronously with the main truss.