Explore details about location 国道３９０号. 国道３９０号 is a location situated within the 石垣市 alongside other areas such as 県道石垣港伊原間線 (Ishigakikou-Ibaruma Sen), 国道３９０号, 県道石垣港伊原間線 (Ishigakikou-Ibaruma Sen).