In the design phase of the construction project, BIM technology only plays a supporting role. Using BIM technology for forward design is a bottleneck in development. This paper studies BIM forward design for bridge engineering focusing on professional design process based on practical project. Relying on BIM software CATIA, some key points in design process are studied, such as alignment creation, component positioning, type selection, and parameter assignment. Then some programs are developed. This study combines BIM software and design process, which deepens the application of BIM technology in the design stage of bridge engineering.