Kōchi-Tōbu Expressway
The Kōchi-Tōbu Expressway (高知東部自動車道, Kōchi-Tōbu Jidōsha-dō) is an incomplete two-lane national expressway in Kōchi Prefecture. It is owned and operated by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT). The route is signed as an auxiliary route of National Route 55 as well E55 under MLIT's "2016 Proposal for Realization of Expressway Numbering."[1]
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.png.webp){kind=small} 高知東部自動車道 | |
| Route information | |
| Maintained by Ministry of Land, Infrastructure, Transport and Tourism | |
| Length | 36.0 km (22.4 mi) |
| Existed | 2011–present |
| Component highways |  National Route 55 |
| Highway system | |
| National highways of Japan Expressways of Japan | |
Route description
The speed limit is 80 km/h for the entire route. There is only one lane traveling in each direction along the entirety of the expressway.
History
The existing portions (as of February 2019) of the expressway opened in five phases between March 2011 and April 2016.[2]
Future
The remainder of the route is planned to be opened to traffic in phases between 2021. It is unknown when the section between Kochi Ryoma Airport Interchange and Konan-Noichi Interchange will be completed.[3]
Junction list
The entire expressway is in Kōchi Prefecture.
| Location | km | mi | Exit | Name | Destinations | Notes | |
|---|---|---|---|---|---|---|---|
| Kōchi | 0 | 0.0 | - | Kōchi | .png.webp){kind=small} .png.webp){kind=small} Kōchi Expressway | Planned western terminus of the expressway, planned opening in 2021. | |
| 2.8 | 1.7 | 1 | Kōchi-chūō | Kōchi Route 374 | Planned opening in 2021 | ||
| 6.2 | 3.9 | 2 | Kōchi-minami | Kōchi Route 376 | |||
| Nankoku | 10.9 | 6.8 | 3 | Nankoku | Kōchi Route 375 | ||
| 15.0 | 9.3 | 4 | Kōchi Ryoma Airport |  Kōchi Route 13 – Kōchi Airport | |||
| 3.5 km gap in the expressway, connection is made by Kōchi Route 13 and National Route 55 | |||||||
| Kōnan | 18.5 | 11.5 | 5 | Kōnan-Noichi | National Route 55 | ||
| 20.7 | 12.9 | 6 | Kōnan-Kagami | Kōchi Route 227 | |||
| 23.6 | 14.7 | 7 | Kōnan-Yasu | Kōchi Route 51 | |||
| Geisei | 27.5 | 17.1 | 8 | Geisei-nishi | National Route 55 | Eastern terminus of the expressway (as of February 2019) | |
| 30.5 | 19.0 | 9 | Geisei-higashi | National Route 55 | |||
| Aki | 36.0 | 22.4 | 10 | Aki-nishi | National Route 55 | Planned eastern terminus of the expressway | |
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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References
- "Japan's Expressway Numbering System". www.mlit.go.jp.
- "記者発表資料" (pdf) (in Japanese). Retrieved 2 February 2019.
- "高知東部自動車道 国道55号 高知南国道路 全線開通 高知自動車道〜高知南IC間が令和3年2月27日（土曜日）に開通します" [Kōchi-Tōbu Expressway National Route 55 Kōchi Nankoku Road opening, the section between Kōchi Expressway and Kōchi-minami IC will open on Saturday, February 27, 2021] (PDF) (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. 7 January 2021. Retrieved 23 January 2021.
