Which bridge type uses a pillar anchored vertically into the ground to support a horizontal deck extending out from one or both sides across the span?

• A. Arch Bridge
• B. Beam / Girder Bridge
• C. Suspension Bridge
• D. Truss Bridge

Answer: (B)

This setup describes a simple beam (girder) bridge. A straight, horizontal deck is supported by vertical piers that rise from the ground, with the deck spanning between those supports. The deck itself carries the loads and transfers them down through the beams to the piers or abutments, primarily by bending.

In contrast, an arch bridge relies on an arch shape to transfer loads to the ends, a suspension bridge hangs the deck from cables attached to towers, and a truss bridge uses a framework of triangular members to carry loads. The presence of vertical supports holding a straight deck across the span is the hallmark of a beam/girder bridge.