Kōchi-Tōbu Expressway
 | |
|---|---|
 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 |
| Location | |
| Country | Japan |
| Highway system | |
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]
Route description
[edit]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
[edit]The existing portions (as of February 2019) of the expressway opened in five phases between March 2011 and April 2016.[2]
Kōchi Ryoma Airport-Kōnan Noichi section was opened on March 15th, 2025.[3]
Junction list
[edit]The entire expressway is in Kōchi Prefecture.
| Location | km | mi | Exit | Name | Destinations | Notes | |
|---|---|---|---|---|---|---|---|
| Kōchi | 0 | 0.0 | - | Kōchi |   Kōchi Expressway | Western terminus of the expressway | |
| 2.8 | 1.7 | 1 | Kōchi-chūō | Kōchi Route 374 | |||
| 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 | |||
| 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
| |||||||
See also
[edit]
References
[edit]- ^ "Japan's Expressway Numbering System". www.mlit.go.jp.
- ^ "記者発表資料" (PDF) (in Japanese). Retrieved 2 February 2019.
- ^ "E55高知東部自動車道 南国安芸道路 高知龍馬空港IC〜香南のいちIC間が令和7年3月15日（土曜日）に開通します。 〜高知JCT〜芸西西ICが高規格道路で繋がります〜" (PDF) (Press release). 国土交通省四国地方整備局 土佐国道事務所. 2024-12-13. Retrieved 2024-12-13.