... Population,”Computing in Civil Engineering, Proceedings of the First Congress, ASCE, Washington, DC, June20-22, 1994, pp. 1006-1013.6. Dunker, K.F. and Rabbat, B.G., “Why America’s Bridges Are Crumbling,” ... state to inspect and maintain an inventory of all bridges on the Federal-aid system.Inspection standards were issued in 1971 to satisfy this mandate of Congress. Most states completedtheir inventory ... the NBI data is defined in the “Recording and Coding Guide” published byFHWA3. The current guide contains 116 data fields, some of which contain sub-fields. These fieldscontain a wide range...