Which item number corresponds to Superstructure?

• A. 60
• B. 59
• C. 58
• D. 61

Answer: (B)

In the NBIS bridge inspection framework, items are organized by structural category, and each category has a fixed item number. Superstructure refers to the parts of the bridge that carry the main load above the deck—components like girders or trusses and their bearings and connections that transfer load to the substructure. On the standard inspection form, this category is assigned the item number 59. That’s why 59 is the best match for Superstructure: it follows the official mapping used to document findings consistently. The other numbers correspond to different sections of the form (such as deck-related or substructure items), not the Superstructure.