Asset management system has always been an important technical area in the world. The asset management isconcerned with the entire life cycle of transportation decisions including planning, programing, construction, maintenance, and operations. National government and local government would like to develop asset managementsystems in Japan. The application of concept of pavement management system will make it possible for many assetmanagers to do a better job of managing their assets. The developing process of pavement management system in USA will be useful to establish the asset management system in Japan. Performance, historic, policy, geometry, environmental and cost related data are indispensable for pavement and asset management system.