Abstract: This article explores the application of BIM forward design in municipal large-span arch bridges, including the current status and prospects of BIM forward design for municipal large-span bridges, the advantages, challenges, and solutions of BIM forward design in municipal large-span arch bridge design, as well as corresponding application strategies and suggestions. Through in-depth research and practice on the forward design of BIM technology, combined with practical cases analysis and modeling experience, this study aims to provide a more efficient and reliable method for the design and construction of municipal large-span arch bridges which are expected to promote the sustainable development of urban infrastructure, and provide safer and more convenient transportation environment for urban residents.