The interest for integrated management of all network assets (pavement, bridges, etc) i.e. Asset Management (AM) is increasing all over the world. The scope of this state-of-the-art study is to investigate the degree of implementation, the ideas or philosophies, the management processes and the technical tools behind already developed Asset Management systems or systems under development, and to identify the demands on data exchange between Asset Management systems and Bridge Management systems. 29 road administrations from 19 countries in 5 continents representing networks ranging from 270 to 98,000 kilometres, including 1,220 to 23,000 bridges, were included in the study. Many countries have already started the implementation of an Asset Management system, but most countries intend to implement an Asset Management system in the near future. The interest in AM is independent of the size of the road administration.