Paper “Gradient-based algorithmic cross-frame cross-section optimization for skewed steel I-girder integral abutment bridge deck placement response” has appeared in Engineering Structures. This paper presents a first trail to adopt gradient-based structural optimization strategies in bridge design and analysis to achieve cross-frame cross-section optimization for skewed steel I-girder bridges with integral abutments (IABs). The optimized design reduced peak flange lateral bending stress for skewed IABs during deck placement, while reducing total steel usage for cross-frames. Practical considerations, such as design efficiency, computation costs, as well as strength and stability requirements under construction and in-service loading conditions, were discussed in the paper.

This study sheds light on continued research in the group that strives to achieve practical algorithmic structural optimization for bridges with complex geometry.