Probabilistic Modelling Approach to Corrosion in Steel Bridges Using Bayesian Networks *B. Barros (University of Vigo), S. Mammeri (University of Vigo), A. Ghasemlou (University of Vigo), S. Sagharichiha (University of Vigo), B. Conde (University of Vigo), M. Cabaleiro (University of Vigo), O. Morales-Nápoles (Delft University of Technology), B. Riveiro (University of Vigo)