3Rd International Conference on Bridge Maintenance, Safety and Management - Bridge Maintenance, Safety, Management, Life-Cycle Performance and Cost, Date: 16 July 2006 through 19 July 2006, Location: Porto, Patrocinadores: Betar Consultores, Lda.;COWI A/S;AP - Bridge Construction Systems;DST - Domingos da Silva Teixeira SA;FCT - Fundacao para a Ciencia e Tecnologia