A modular bridge management system (bms) is being developed to select ideal scopes of maintenance work on the basis of the conditionstates of bridge segments. The maintenance and repair (m&r) scopes and condition modules, which are two of seven modules that make up the bms, are the major focus of this paper. A companion paper in thisrecord completes the overview of this network-level bms. The condition module uses surveyed condition ratings to develop composite condition indexes (cci) that characterize the condition of each structural element within a segment. The cci values are further refined to derive condition states, which characterize the overall condition of each segment on the basis of the condition levels of its constituentelements (deck, substructure, and superstructure). When the condition state of a bridge segment is known, engineering judgment can be used to select ideal maintenance activities from the m&r scopes module. The m&r scopes describe the intensity level--routine maintenance, repairs, rehabilitation, or replacement--of various m&r actions, each with a defined effect on condition level. When the condition state and the m&r scope effects are provided, the condition state resulting from a certain scope of work can be determined, and the feasiblem&r scopes can be ranked from the ideal (most recommended) to the least recommended course of action. This paper appears in transportation research record no. 1268, Highway maintenance operations and research 1990.
Samenvatting