The Deck of a bridge primarily:

• A. Carries traffic and transfers the live load to other bridge components
• B. Provides a smooth riding surface
• C. Removes water from bridge
• D. Minimizes hazards for traffic

Answer: (A)

The deck’s main role is to carry traffic and transfer the live loads from vehicles into the bridge’s supporting members. As the top surface you drive on, the deck captures the weight of cars, trucks, and loads and distributes those forces into the girders or beams, then down through to the piers and foundations. A smooth riding surface results from proper deck design and finishing, but the core function is to act as the load-transfer interface between the traffic loads and the bridge structure. Drainage or measures to reduce traffic hazards are important features, but they are secondary to the deck’s primary purpose of supporting and transferring loads.