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The role of design in merchantability has become increasingly important in recent years. In this context, there is a need to establish a design-oriented design method for structural components. Topology optimization is a method that can create shapes beyond human knowledge, and its applicability as a design feature is expected. However, the objective function cannot be set freely at present, and optimization of strength requirements is a particular challenge. In this paper, a case study is conducted on a steering wheel bridge to apply topology-optimized geometry, which has design potential, to a structural member by conducting two-step optimization of topology and geometry.