Molded fiberglass grating is cast in full panel sizes. Liquid resin and continuous fiberglass roving are manually woven into a mold that resembles an oversized waffle iron. Layer after layer of roving is wetted out and placed in the mold in a systematic pattern to achieve maximum strength along with the desired thickness and panel size. These panels are then allowed to cure in the mold before the part is ejected and the process is repeated. This one piece construction has several benefits. The first is that it can be cut in any direction and can be riddled with access holes without weakening the overall structure. These glued joints can work loose in heavy traffic or around unsupported edges and access holes.