IRIDIUM Concesiones de Infraestructuras, S.A. is the ACS Group company which develops, finances, invests in, manages, operates, administrates, maintains, conserves, restores and equips all types of government concessions involving transport and public works infrastructure. IRIDIUM manages 85 companies working in the construction/operation of various government concessions, in diferent countries, making it the leader in developing, financing, building and operating every type of infrastructure.