Explore details about location Nihonkai Tohoku Expressway. Nihonkai Tohoku Expressway is a location situated within the にかほ市 alongside other areas such as 国道７号, 長岡冬師城内線, 長岡冬師城内線. Additionally, some smaller parts of Nihonkai Tohoku Expressway include specific areas like 国道７号, 小出金浦線, 上郷仁賀保線 adding to the diversity of its landscape.