ABSTRACT
Performance of bridge structures is highly aected by the time-dependent deterioration processes associated with aggressive environmental conditions (e.g., corrosion) and aging of the materials they are composed of. In order to avoid the consequences of structural failures, maintenance programs are carried out by the responsible authorities. It is necessary to predict the lifecycle performance of bridge structures accurately to establish a rational maintenance program. However, the prediction of lifecycle performance involves diculties because of the complexity and uncertainties in loading and deterioration processes. Consequently, it is important to use proper indicators to evaluate the structural performance of bridges.
