More than half of railway steel bridges are aged over 60 years. The number of railway steel bridges which needs replacement will increase in the near future, and an accurate evaluation of durability of these bridges is required. In such a situation, it is very important to examine load carrying capacity limit state of railway steel rivetted girders. Therefore, in order to estimate durability behavior of them, an actual railway girders were examined and tested. Moreover, some nonlinear analyses were executed using an analytical model which takes corrosion into consideration. By using the new method proposed by us, it is possible to evaluate durability of railway rivetted steel bridges better than by the current method.

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