The Kintaikyo in Iwakuni-City, which spans the Nishiki-River in Yamaguchi Prefecture, was built in 1673. The design of the arch of this bridge was studied. It was assumed that the arch of this bridge were designed in arch coordinates with multiple catenary. As a result, the design theory of this bridge was derived for the first time. The multiple catenary was identified from the Kintaikyo in Heisei, and The new Kintaikyo drawing for KAKEKAE was created that is harmony and orderly. Based on this drawing, it was proved that a harmony and orderly bridge can be realized by 3D-CG.
