Bridges are composed by many structural members which interact with each other to resist against various load combinations. In the present study, a full-scale FE analysis has been conducted for a steel I-girder bridge system with corrosion damages which have been repaired. The analysis considered, the bridge system behavior, varying the repaired areas and the shape of patch members. From the analytical results, it was found that, reinforcing the adjacent healthy girder in addition to the corroded girder was effective. Furthermore, when reinforcing the adjacent healthy girder in addition to the corroded girder, it is desirable to determine the shape of the plate based on the cross-sectional area ratio of the corroded girder and the adjacent healthy girder.
