| Fatigue cracks in steel I-girder highway bridges have been reported mostly at main girders-cross beam connection. These cracks are known to be displacement-induced fatigue, and there are many uncertainties in crack propagations. In order to take appropriate action to damaged bridges, it is important to evaluate the cause and tendency of damages efficiently. In this paper, for the purpose of identifying fatigue-damaged bridges with high priority for countermeasures, the relationship between the crack conditions and the structural/service conditions in existing bridges were investigated based on periodic bridge inspection data. |
