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|Length:||143.6 km (89.2 mi)
Akita Sotokanjō Expressway: 9.5 km (5.9 mi)
Kotooka Noshiro Road: 33.8 km (21.0 mi)
|Existed:||1991 – present|
|From:||Kitakami Junction in Kitakami, Iwate
|To:||Futatsui-Shirakami Interchange in Noshiro, Akita
Nihonkai Engan Tōhoku Expressway
National Route 7
Akita Prefectural Route 317
|Major cities:||Yokote, Daisen, Akita|
|National highways of Japan
Expressways of Japan
The expressway begins at a junction with the Tōhoku Expressway in Iwate Prefecture and crosses into Akita Prefecture to the west. The route intersects the Yuzawa-Yokote Road in Yokote and the Nihonkai-Tōhoku Expressway in the Akita city area. From this junction, the route follows a northerly course parallel to the Japan Sea to its terminus with National Route 7 in Noshiro.
The entire route is signed as the Akita Expressway for consistency purposes, however two separate sections of the route are officially designated as the Akita Sotokanjō Expressway and Kotooka Noshiro Road (both bypasses of National Route 7). These sections are not classified as national expressways but rather as national highways for motor vehicles only with national expressway concurrency (高速自動車国道に並行する一般国道自動車専用道路 Kōsoku Jidōsha Kokudō ni Heikōsuru Ippan Kokudō Jidōsha Senyō Dōro?).
The route of the expressway is planned to eventually continue past the current terminus at Futatsui-Shirakami Interchange as the Nihonkai Engan Tōhoku Expressway towards a junction with the Tōhoku Expressway near Aomori Prefecture, however it is unknown if the naming of the sections that are currently open will change upon completion of that expressway.
The section between Hachiryū Interchange and Futatsui-Shirakami Interchange is toll-free; all other sections assess tolls based on distance travelled in the same manner as most other national expressways.
- Kitakami JCT - Akita-kita IC : Tōhoku Ōdan Expressway Kamaishi Akita Route
- Akita-kita IC - Shōwa-Ogahantō IC : Akita Sotokanjō Expressway
- Shōwa-Ogahantō IC - Kotooka-Moritake IC : Nihonkai Tōhoku Engan Expressway
- Kotooka-Moritake IC - Futatsui-Shirakami IC : Kotooka Noshiro Road
List of interchanges and features
- IC - interchange, JCT - junction, SA - service area, PA - parking area, BS - bus stop, TN - tunnel, BR - bridge, TB - toll gate
|Bus Stop||Notes||Speed Limit||Lanes||Location|
|(37)||Kitakami JCT||Tōhoku Expressway||0.0||186.7||70 km/h||Two||Kitakami||Iwate|
|1||Kitakami-nishi IC||Pref. Route 47 (Kitakami-nishi Inter Route)
Pref. Route 225 (Kitakami Waga Route)
|TN||Waga-Sennin Tunnel||↓||↑||Length - 3,776 m|
|2||Yuda IC||National Route 107||30.3||156.4|
|TN||Sannai Tunnel||↓||↑||Length - 2,440 m||Yokote||Akita|
|BS||Sannai Bus Stop||43.2||143.5||○|
|3||Yokote IC/JCT|| Yuzawa-Yokote Road
National Route 13
|BS||Hiraka Bus Stop||52.7||134.0||○|
|BS||Asahi Bus Stop||57.6||129.1||○|
|BS||Kakumagawa Bus Stop||65.8||120.9||○||Daisen|
|BR||Omonogawa Bridge||↓||↑||Omono River crossing
Length - 549 m
|4||Ōmagari IC|| National Route 105
Ōmagari Nishi Road
|BS||Nangai Bus Stop||78.3||108.4||○|
|88.0||98.7||IC: Open 06:00-22:00|
|BR||Omonogawa Bridge||↓||↑||Omono River crossing|
|5||Kyōwa IC||National Route 341||95.4||91.3|
|5-1||Kawabe JCT||Nihonkai-Tōhoku Expressway||103.8||82.9||Akita|
|6||Akita-minami IC||National Route 13||106.7||80.0|
|7||Akita-chūō IC||Pref. Route 62 (Akita Kitanoda Route)||113.7||73.0|
|8||Akita-kita IC||Pref. Route 72 (Akita-kita Inter Route)||122.9||63.8|
|9||Shōwa-Ogahantō IC|| National Route 7
National Route 101
|Pref. Route 15 (Akita Hachirōgata Route)||143.5||43.2||Gojōme|
|11/TB||Kotooka-Moritake IC/TB||Pref. Route 37 (Kotooka Kamikoani Route)||153.1||33.6|
|12||Hachiryū IC||National Route 7||166.1||20.6|
|13||Noshiro-minami IC||National Route 7||170.2||16.5||Noshiro|
|14||Noshiro-higashi IC|| National Route 7
Pref. Route 64 (Noshiro Futatsui Route)
| National Route 7
Pref. Route 317 (Nishimeya Futatsui Route)
|Through to Nihonkai Engan Tōhoku Expressway (Planned)|
- "E-NEXCO Expressway Data". Retrieved 2008-04-13.
- "Hokuu Shinhō, August 12, 2007". Retrieved 2008-04-13.
- "History of Akita City". Retrieved 2008-04-13.
- Ministry of Land, Infrastructure and Transport. "High Standard Trunk Road Map" (pdf). Retrieved 2008-04-13.
- "E-NEXCO Planned Routes". Retrieved 2008-04-14.
- "E-NEXCO Drive Plaza Route Search". Archived from the original on 13 April 2008. Retrieved 2008-04-13.
- (Japanese) East Nippon Expressway Company