Which bridge is built as runways for airplanes, and its width mainly depends on the wingspan of the aircraft?

• A. Arch Bridges
• B. Aqueduct Bridge
• C. Airport Runway Bridge
• D. Pipeline Bridges

Answer: (C)

Designing a bridge to function as a runway centers on width, which must accommodate the wingspan of the aircraft that will use it and provide safe clearance for wing tips and engine nacelles. This is exactly what an airport runway bridge is about—its main dimension is set by aircraft wingspans. Other bridge types serve different purposes: arches are driven by spanning requirements and load distribution, aqueducts by carrying water, and pipeline bridges by supporting pipes. Their widths aren’t determined by aircraft wingspans, so they don’t fit the scenario.