Road Plates & Mats Road Plates and Temporary Mats for All standard plates are 1″ thick and all use the Lifting System to ensure the highest in safety when handling the road plates. Standard plates sizes available for SOE: 1” x 4’ x 8’. 1” x 6’ x 10’. 1” x 8’ x 10’. HDPE Ground Protection Mats ... large size plastic road ...