Due to the rapid spread of road bridges about sixty years ago, noticeable deterioration has occurred in the existing bridges in japan. The purpose of this paper is to evaluate the remaining load carrying capacity of steel plate girders with a fatigue crack. In this study the plate girder was modeled by FEA and various proportions of bending and shear load were applied analytically. The results of the analyses found that in the case of shear-dominant loading, the cases with cracks are not safe. Moreover the result indicated that when there is no significant difference in the ratio of bending to shear loading, the shear load capacity decreases and the bending load capacity varies a little as the crack length increases.
