National Route 17 is a highway on the island of Honshu in Japan. It originates at Nihonbashi in Chūō, Tokyo, and terminates in the city of Niigata, where it meets National Routes 7, 8, 49, 113 and 116
Mikuni Tunnel
Route 17 intersects with the C2 Central Circular Route of the Shuto Expressway near Nishi-Sugamo Station