In the item-number list, which component uses number 58?

In the item-number list, which component uses number 58?

• A. Deck
• B. Superstructure
• C. Substructure
• D. Culvert

Answer: (A)

Bridge inspection uses a fixed item-number code for each bridge component, so inspectors reference observed conditions by that code. In this standardized catalog, the top structural surface that carries traffic—the deck—has the code assigned to it as 58. That’s why the deck is identified by number 58 in the item-number list. The deck is the component most directly exposed to wear from traffic and weather, and its condition is routinely documented under its specific item code to keep reporting consistent. The other components—superstructure, substructure, and culvert—have their own distinct codes, so they aren’t 58. If you’re studying this, remember to check the exact item-number table in your current manual, since codes can vary by edition.

Bridge inspection uses a fixed item-number code for each bridge component, so inspectors reference observed conditions by that code. In this standardized catalog, the top structural surface that carries traffic—the deck—has the code assigned to it as 58. That’s why the deck is identified by number 58 in the item-number list. The deck is the component most directly exposed to wear from traffic and weather, and its condition is routinely documented under its specific item code to keep reporting consistent. The other components—superstructure, substructure, and culvert—have their own distinct codes, so they aren’t 58. If you’re studying this, remember to check the exact item-number table in your current manual, since codes can vary by edition.