The article discusses advancements in box girder technology over the past decade, focusing on issues like shear lag, section warp, and out-plane flexure. Different analysis methods for single-cell, multi-cell, and multi-box girders are compared. The authors emphasize the importance of analyzing multi-cellular box girders and the complexities of nonlinear concrete box girder analysis. Design theories for addressing cracking in box girders are explored, along with potential solutions and areas for further research.