Abstract: In view of the characteristics of bridge engineering design, a BIM design program for railway bridges with two-dimension interactive design and three-dimension display function was independently developed. This article described the development of bridge programs in BIM mode, emphatically introduced the MVC framework, bridge design function, OPENGL VBO, quadtree spatial index and other technologies used in the development of two-dimensional and three-dimensional display viewport. Through the project application, it shows that the program has BIM railway bridge design function, three-dimensional scene is intuitive and vivid, and combined with twodimensional view assistance, users can directly grasp the bridge structure elevation, size and other data in real time, better help decision-making reasonable bridge scheme.