National Route 17 shield
National Route 17
Japan National Route 17 highlighted in red
Route information
Length350.3 km[1] (217.7 mi)
Existed4 December 1952–present
Major junctions
Major intersections National Route 7 / National Route 8 / National Route 49 / National Route 113 / National Route 116 in Chūō-ku, Niigata
South end National Route 1 / National Route 4 / National Route 6 / National Route 14 / National Route 15 / National Route 20 in Nihonbashi, Chūō, Tokyo
Highway system
National Route 16 National Route 18
Mikuni Tunnel
Mikuni Tunnel

National Route 17 (国道17号, Kokudō Jū-nana-gō) is a highway on the island of Honshu in Japan. It originates at Nihonbashi in Chūō, Tokyo, and terminates in the city of Niigata (the capital of Niigata Prefecture), where it meets National Routes 7, 8, 49, 113 and 116).[2]

National Route 17 measures 350.3 km in length. It incorporates parts of two ancient highways, the Nakasendō and Mikuni Kaidō. The newer Kan-Etsu Expressway parallels National Route 17.

In addition to Chūō, National Route 17 passes through Itabashi. It links the prefectural capitals of Saitama (Saitama Prefecture) and Maebashi (Gunma Prefecture).

Route data

Other names



  1. ^ "一般国道の路線別、都道府県別道路現況" [Road statistics by General National Highway route and prefecture] (PDF) (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. Retrieved 19 February 2020.
  2. ^ 一般国道17号 (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. Kanto Regional Development Bureau. Archived from the original on 30 July 2010. Retrieved 29 November 2010.