This paper is focused on the development of modular shallow trapezoidal boxes fabricated fromcold-bent structural steel plate using standard mill plate widths and thicknesses. This conceptwas developed by a technical working group within the Steel Market Development Institute’s (abusiness unit of the American Iron and Steel Institute) Short Span Steel Bridge Alliance(SSSBA), led by the current authors. This working group consists of all stakeholders in the steelbridge industry, including mills, fabricators, service centers, industry trade organizations,universities, and bridge owners. The goal was to develop innovative and economical modularsolutions for the short-span steel bridge market. The proposed system meets the needs of currentindustry trends of accelerated bridge construction, while offering an economical solution. Thispaper will provide an overview of experimental testing currently being conducted and furtherparametric analysis and design studies focused on the refinement of cross-section dimensions.
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