The Apollo Zeus Truck scale uses monstrous W24 x 117 lb/ft side rail beams. At 24 inches high, the principal shaft spines are 12.8 inches wide and.850 inches thick, with a web that is.550 inches thick. Our closest competition uses the same W24 side rail beam, but weighs substantially less at only 76 lbs./foot and with 8.9 inch wide flanges that are .68 inches thick with a 20% narrower web at only .440 inches thick. Apollo Zeus' main beams are joined by heavy W8 crossmember beams. This connection is completed by using grade 8 bolts on an 8"x8"x3/4" steel plate welded to the crossmember ends to achive the 100,000 lb. heavy duty truck scale engineered design connection. These plates on the crossmembers are then bolted to the main weigh bridge beams. The same way our Interstate Highways build their bridges, is the same way our Apollo Zeus' weigh bridge is built. Our highway bridge design doubles as a security side rail 18 inches above the concrete steel deck for added driver safety.