Slab bridges are short-span bridges that are a reinforced concrete slab. This slab, typically cast-in-place, rests on abutments.
These bridges are cast on site by pouring concrete into forms (decking) and letting it cure into the final slab (bridge deck). The slabs are reinforced with reinforcing steel (rebar) throughout. The amount of steel and depth of the slab are based on its length and load capacity.
Simple slabs are rarely longer than 50 feet. Longer slab bridges are also common, with the slabs resting on piers in between. As the length of slab spans increases, so does slab thickness to withstand heavy loads over longer distances.
