There have been found a lot of corrosion damages recently in steel bridges aged for fifty or more years, especially in plate girder bridge, we can notice serious damages at girder ends involving supports. Then, the girder-end should be repaired adequately against the thickness loss caused by corrosion. This paper presents a repair method for corrosion damage at girder-end, in which rebars and shear connectors are fixed to the corroded member using with resin. In order to investigate the effect of recovered strength, we conducted axial compressive tests for six cruciform columns. One of the six specimens has no corrosion damage. The other five have the same unevenness imitated a corroded surface which is made artificially by drilling, for the purpose of grasping the quantitative effect by the repair method. During the test, ultimate strength and post buckling behavior of the cruciform columns are also investigated as well as recover effects. It is concluded from test results that this repair method can enhance the axial remaining strength sufficiently, beyond the ultimate strength of the non-corroded specimen because the buckling length become shorter by repaired resin thickness than the column length which is equal to the buckling length in the non-corroded case.