Abstract:Flood discharge project of Wusong River is one of the major projects identified in the Taihu Lake Basin flood discharge plan approved by the State Council, including river dredging , water control project, and the construction reconstruction of river crossing bridges, etc. Among them, the new Chuansha river project implemented in advance includes a total length of about 7.8km, and seven bridges (four vehicular bridges and three foot bridges) need to be demolished and rebuilt. Design of the seven bridges is made under the consideration of relevant planning, geographical location, surrounding environment , project scale, local culture. Reference is provided for the design of bridges crossing high-grade waterway in the city.