What does "flexural capacity" of a bridge element refer to?

The term "flexural capacity" specifically pertains to the ability of a bridge element to resist bending when subjected to external loads. This resistance to bending is essential for maintaining the structural integrity and safety of the bridge. Flexural capacity is primarily determined by the material properties, such as strength and stiffness, and the geometry of the element, which includes factors like the moment of inertia. Understanding flexural capacity is critical during inspections and evaluations to ensure that bridge components can adequately withstand the stresses imposed on them during usage and prevent structural failure.

Option A, while related to load-bearing capabilities, focuses solely on vertical loads and does not encompass the bending aspect. Option C addresses the overall durability of materials, which is a broader concept not limited to flexural performance. Option D refers to deflection, focusing on how much a structure deforms under load rather than its ability to resist that deformation through flexural means. Each of these alternatives lacks the specificity required to define the unique aspect of flexural capacity in bridge elements.