This paper firstly analyzes technical characteristics of BIM and GIS, and points out that the combination of BIM and GIS can exhibit the bridge construction process for construction information management, from macroscopic way to microcosmic way.In this way, the bridge construction process can better achieve digitalization, informatization and visualization, which will greatly promote the construction management level of engineering project.Then, considering the demand analysis of the bridge construction stage, this paper adopts the C/S system architecture to realize the 3D digital management base on BIM+GIS of bridge construction progress on the project schedule, quality and cost.The system applies database technology, 3D parametric modeling of bridge and data sharing technology in the bridge construction process management, and realizesa revolution from 3D-BIM to 5D-BIM application in bridge construction, which can offer stronger decision supports to the managers.Last, the implementation effect of project management informatization is analyzed in this paper, through which indicates the application prospect of BIM+GIS technology in bridge construction engineering.