Abstract: Addressing the challenges of complex construction processes, scattered construction data, difficult control and traceability, and insufficient multi-party collaboration efficiency in the construction of main towers of long-span bridges with special structures, a construction management platform tailored for collaborative construction scenarios has been designed. A multi-source data access system has been established, integrating project fundamentals, bridge EBS, construction monitoring, and other business data. Leveraging BIM models, dynamic linking between components and construction business data is achieved, optimizing the main tower construction process, refining procedural steps, and enabling visual construction control, dynamic progress display, real-time hazard warnings, and full-chain data traceability. Multidimensional data analysis empowers management decisions, strengthening multi-party collaboration and engineering supervision. Practical applications demonstrate that the platform breaks down barriers to cross-unit data access, boosts management efficiency by 12%, and exhibits strong data expansion and access capabilities, reducing workload by 70% compared to traditional methods.