To solve the issue of"information silos",a maintenance platform with a"1+1+2+5+N architecture based on virtual digital resources and physical maintenance assets has been designed to achieve the target of closed loop manage-ment for highway infrastructure maintenance.The platform which has utilized digital technologies is based on the stand-ardized systems of infrastructure,facility diseases,inspection and inspection,disposal measures,and management proces-ses.This platform also supports six business management subsystems whose core functions are maintenance management business and road,bridge,and tunnel professional management.By the platform,the data barriers between departments and businesses have been broken down to ensuring the interoperability between subsystems and the overall platform,to satisfying with digital functions such as maintenance business management,infrastructure assets,big data analysis,and scientific decision-making.The platform has been used in multiple high-speed applications,and achieved the meet of main-tenance management.