Moulded deck board

A plastic moulded deck board (10, 50) provides a sturdy, durable, lightweight, economical, readily identifiable, and easily handled surface for supporting cargo on top of trailer load beams (31). The deck board (10, 50) defines a platform (11, 51) having a top face (22, 52) for supporting cargo, a bottom face (23, 53) and a plurality of side faces (18, 54). The top face (22, 52) can define a plurality of protrusions (29, 63) having variable shapes and heights, and can include rubber stoppers (74) for providing surface friction. The bottom face (53) can define a plurality of side walls (55A-55D), a plurality of angled cross walls (56A-56H), a first platform channel (75) and optionally a second platform channel (76) disposed between the plurality of angled cross walls for receiving a center load beam (31) of a cargo trailer. The top face (52) can define recessed slots (70A-70H) for receiving the angled cross walls (56A-56H) of another deck board such that two or more deck boards can be securely stacked.