南河特大桥是一座大型连续刚构-连续箱梁桥,主孔跨径180m,桥梁上部结构采用了整幅式、大悬臂、斜腹板的单箱单室预应力混凝土箱梁,设计技术先进,在连续刚构桥梁中具有明显的特点。文章重点介绍该桥设计标准、桥跨布置以及结构设计和计算。 Nanhe Grand Bridge is a large continuous rigid-continuous box girder bridge with a main span of 180m. The upper structure of the bridge adopts single-box single-chamber prestressed concrete box girder with full-span, large cantilever and inclined webs with advanced design technology , In continuous rigid frame bridge has obvious characteristics. The article focuses on the bridge design standards, bridge layout and structural design and calculation.