In the Meiji period, its new route was developed by building Kunitoyo-bashi Bridge at the north of Kokubu-mura village and laying a road on the south bank of the River Yamato.
明治時代に入ると、国分村の北に国豊橋が架けられ、亀ノ瀬の対岸の大和川南岸壁を開削して新たなルートが開設された。