Abstract:SDue to a series of reasons such as the improvement of road grades or navigation standards of waterways, and the updating and adjustment of urban traffic planning, the existing bridges cannot adapt to the further development of traffic and need to be reconstructed to meet the needs of development. Combining engineering examples, this paper studies and discusses the existing bridge reconstruction methods, so that the bridge reconstruction scheme is reasonable, safe, economical and fast, which can be used for reference by relevant professionals.