Which pavement type is commonly used for longer-span bridges or heavy traffic due to construction requirements?

• A. Asphalt pavement
• B. Concrete pavement
• C. Composite materials
• D. Bridge pavement

Answer: (B)

When a bridge has long spans or carries heavy traffic, the pavement must endure high wheel loads, temperature-driven movements, and long service life with manageable maintenance. Concrete pavement fits this need because rigid concrete slabs distribute loads over a broader area, reducing peak stresses on the deck and substructure. Its high stiffness helps resist rutting and fatigue cracking from repetitive loads, and it can be designed with joints and dowels to accommodate thermal expansion while transferring loads smoothly between slabs. This combination of durability and predictable performance makes concrete pavement the preferred choice for bridge decks under demanding conditions. Asphalt can ride well initially and be quicker to construct, but it is more prone to deformation and maintenance under heavy, sustained loads. Composite approaches exist, yet the straightforward, proven solution for long spans and heavy traffic is concrete pavement.