The present invention concerns a system and method for providing reinforcement in the form of strength and/or moisture protection at discrete locations along the bottom of a wooden cargo-carrying floor, which reduces the cost associated with such manufacture and provides at least equal if not better results. The cargo-carrying floor surface reinforcing system for a cargo-carrying body, such as transport vehicle or transport container, comprises a flooring section and at least one region having a predetermined area smaller than an area of said bottom surface of said flooring section. The flooring section is comprised of a plurality of wood boards having a top surface, a bottom surface, first and second side surfaces arranged side by side, the boards in turn being comprised of strips of wood joined end-to-end and side-to-side. The at least one region is selectively located along the bottom surface of the flooring section and is comprised of material chosen either for its structural strength properties or its water protection.