ABSTRACT
There are tens of thousands of iron and steel bridges that are considered historically significant and which remain in service as part of our transportation systems. For bridges with structural redundancy that have been in continuous service, with minor corrosion damage, a visual examination may be all that is required. But where redundancy is insufficient, significant distress or damage is present, or an increase in loading is required, a complete evaluation of the condition of the members as well as structural capacity may be required for continued service.
