The paper presents the advantage of using Case-Based Reasoning (CBR) for bridge design on the basis of the actual design practice adopted by the design experts. Due to the involvement of various complex design parameters. unlike the domains where traditional CBR techniques have been applied, CBR in bridge engineering design requires special case representation and retrieval techniques. These parameters are first identified and a case-based design model is proposed. The paper starts with a brief review of the prior research efforts. An overview of the bridge design practice is presented next. Then a task analysis of the various preliminary bridge design tasks is presented with an aim to identify. the required case-based techniques. The CBR process and the issues addressed are discussed briefly in the following section. Various important factors that govern the process of recalling past cases ate identified and the representation of bridge design cases are discussed in the two subsequent sections. The proposed model for the case-based bridge design process and the conclusions arrived at based on the presented work are presented in the final two sections.

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