Fred Moses received a civil engineering degree from CUNY in 1960 and a PhD from Cornell in 1963. Since joining Case Institute, Professor Moses has been active in structural optimization and reliability with special applications to bridge and offshore structures including loading, safety analysis and system reliability studies. SUMMARY Estimates of the safe remaining life of existing steel bridges affect decisions on inspection, maintenance, replacement, truck weight, permit posting limits and

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... en changes in new weight regulations. A reliability model has been developed and calibrated to produce uniform and consistent fatigue checking procedures for different spans, geometries, bridge types, and traffic. These methods have been adopted in recent AASHTO Guide Specifications for fatigue design of new bridges and safe-life evaluation of existing steel bridges. The same model has been extended to compute costs associated with proposed truck-weight regulations. These costs affect new designs and particularly, existing estimates of bridge repair and damage.