Kamaishi Expressway

The Kamaishi Expressway (釜石自動車道, Kamaishi Jidōsha-dō) is a partially tolled two-lane national expressway in Iwate Prefecture, Japan. The expressway connects Kamaishi, Iwate on the prefecture's Pacific coast to the Tōhoku Expressway. It is owned and operated by partly by the East Nippon Expressway Company and the Ministry of Land, Infrastructure, Transport and Tourism. The expressway is signed as an auxiliary route of National Route 283 as well as E46 under the "2016 Proposal for Realization of Expressway Numbering."[2]

Kamaishi Expressway sign

Kamaishi Expressway
E46 釜石自動車道
Route information
Length79.5 km[1] (49.4 mi)
National Route 283
Major junctions
West endHanamaki Junction
Tōhoku Expressway
in Hanamaki, Iwate
East endKamaishi Junction
Sanriku Expressway in
Kamaishi, Iwate
Highway system
National highways of Japan
Expressways of Japan

Route descriptionEdit

From Hanamaki to Tōwa the expressway is maintained and tolled by the East Nippon Expressway Company. The rest of the expressway is able to be driven without any fees. That section of the expressway is maintained by the Tōhoku branch of the Ministry of Land, Infrastructure, Transport and Tourism.

The entire expressway has only one lane in each direction, with passing lanes at some interchanges. The speed limit is 70 km/h for the entire route, except for the section between Tōno and Miyamori.


The Kamaishi Expressway was first opened in 2002. There was a 10 kilometer gap in the expressway in Tōno and the expressway did not connect to its eastern terminus at a junction with the Sanriku Expressway. These missing links in the expressway were scheduled to be completed in 2018, but were instead opened later in March 2019.[1][3]

Junction listEdit

The entire expressway is in Iwate Prefecture.

Hanamaki00.038-2Hanamaki  Tōhoku ExpresswaySendai, AomoriWestern terminus of Kamaishi Expressway.
E46 continues south along E4 to the Akita Expressway.
3.72.31Hanamaki Airport   National Route 4/
Iwate Prefecture Route 294 – Hanamaki Airport, Morioka
4.83.0TBHanamaki Toll Booth
11.47.12Tōwa   National Route 283 / National Route 456 – Tōwa
Ōshū23143Esashi-Tase  National Route 107 – Ōshū, Kitakami
Tōno35.121.84Miyamori  National Route 107 – Miyamori, Ōfunato
44.127.45TōnoIwate Prefecture Route 238 – Tōno
46.028.6Nabekura Tunnel
55.134.26Tōno-Sumita   National Route 283 / National Route 340 – Tōno, Sumita
Sumita59.537.0Akimaru Tunnel
60.237.4Rōkandō Tunnel
64.640.17RōkandōIwate Prefecture Route 167 – Sumita, Rōkandō Cave
6540Shin-Sennin Tunnel
Kamaishi69.943.4Kasshi Tunnel
73.545.78Kamaishi-nishi  National Route 283 – Kamaishi, Hanamaki
76.247.3-Emergency ExitIwate Prefectural Kamaishi HospitalEmergency vehicles only
79.549.440Kamaishi  Sanriku Expressway – Kamaishi-chūō, Miyako, Kuji, Ōfunato, KesennumaEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b "東北横断自動車道釜石秋田線 様式は精査中 (釜石~花巻)に係る新規事業採択時評価" (PDF). www.thr.mlit.go.jp.
  2. ^ "Japan's Expressway Numbering System". www.mlit.go.jp.
  3. ^ "釜石-花巻間 全線開通に向け大きく前進!" (pdf) (in Japanese). 31 January 2019. Retrieved 19 February 2019.

See alsoEdit

External linksEdit

Route map:

KML is from Wikidata