Abstract:Based on the Jinling bridge of 324 National Highway in Nanning, this paper studies the key technology of design and construction of long-span steel-concrete combined continuous beam bridge. The Jinling bridge is a continuous beam bridge with a span of 75+180+75m, which is the largest steel-concrete combined continuous beam bridge in China. Combined with the characteristics of the bridge, the key technology of bridge design and construction is studied, for reference of similar projects.