Abstract:In the construction of urban and highway bridges,the continuous rigid frame or continuous beam is often used in the long-span curve bridges with small radius. Howerver,There are so many problems in the later operation, such as web cracking and large mid-span deflection.The curve extradosed cable-stayed bridge is an economical and reasonable structure form with good landscape effect,but the number of curvilinear partial cable-stayed bridges designed and built at home and abroad is very few,and the related research is also limited to the scope of straight-line extradosed cable-stayed bridge,therefore,the practice and research of curve extradosed cable-stayed bridge is of great significance. Based on the design and analysis of the Joint Bridge over ChangJiu Expressway of New Expressway in JiuJiang,which has the smallest radius of horizontal curve in China,some useful experiences of this kind of bridge structure design are summarized,which can provide useful reference for similar bridge design.