dc.title: Investigation of dual grade/hybrid steel plate girders utilizing stainless steel dc.description.abstract: This study evaluates the feasibility and performance of dual-grade (hybrid) steel plate girders incorporating stainless steel, focusing on ASTM A709 Grade 50CR in combination with conventional carbon and weathering steels. The research adopts a literature review-based approach to address the lack of unified design guidance for dissimilar steel systems in bridge engineering. Key aspects examined include material behavior, corrosion resistance, weldability, and connection performance, with emphasis on challenges such as galvanic corrosion, thermal incompatibility, and microstructural changes in welded regions. Findings indicate that the strategic use of stainless steel in corrosion-prone zones can significantly improve durability and reduce life-cycle costs while maintaining structural performance. The review also identifies limitations in existing accelerated corrosion testing methods and highlights the need for integrated evaluation frameworks that consider both mechanical and environmental effects. Additionally, a conceptual Continuous Under-Deck Splash Shielding System is proposed to further mitigate environmental exposure. The study consolidates current knowledge, identifies critical research gaps, and provides recommendations to support future development of design guidelines and long-term performance validation.