Ta On Bridge, built during the reign of Jayavarman VII in the 12th century AD, travel from Angkor to Bakan Temple and continued to present-day central Bình Dinh province, Vietnam. The bridge is 77 meters long, 13 meters wide and 6 meters high. Today, the bridge is still open to the public, but not for heavy vehicles. Figure 1 is from the book Cambodge at Jaya.