Explore details about location 大草三原線. 大草三原線 is a location situated within the 三原市 alongside other areas such as 山陽自動車道 (Sanyo Expressway), 広島県道59号東広島本郷忠海線, 国道185号. Additionally, some smaller parts of 大草三原線 include specific areas like 山陽自動車道 (Sanyo Expressway), 上徳良久井線, 本郷久井線 adding to the diversity of its landscape.