Abstract: This paper addressed the problems of poor intuitiveness of design disclosure, low modeling efficiency, and ineffective integration of model information in current high-speed railway bridge engineering, and proposed a parametric automatic modeling and coding method for bridge components. By decomposing the bridge at the component level, it extracted key parameters from design drawings, established parametric templates and positioning rules, and realized automatic modeling and assembly of bridges. Meanwhile, it constructed an Engineering Breakdown Structure (EBS)-based coding scheme to map the model with schedule, quality, investment and other information in the construction stage, forming a unified portal for data management and query. Experimental results show that this method achieves only 2 seconds per kilometer for modeling, accurately reproduces complex bridge structures, and supports component identification, information query and visual schedule management. By improving the efficiency and accuracy of bridge modeling, it provides a technical foundation for digital delivery and intelligent management of high-speed railway bridges.