Office's Work | Shikoku trans-expressway

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TOP＞Shikoku trans-expressway

Summary of Shikoku trans-expressway

Shikoku trans-expressway runs or will run from Anan City,Tokushima Prefecture to Ozu City, Ehime Prefecture via Takamatsu City, Kagawa Prefecture and Kochi City, Kochi Prefecture. We oversee the construction of the 21.8 kilometers with Nakamura River and National Highway Office from a total of 441.0 kilometers of roadway.

Shikoku trans-expressway (Susaki-Shinjo〜Kubokawa)

Shikoku trans-expressway (Susaki-Shinjo〜Kubokawa) will be constructed as an expressway, form an expressway and regional high standard road network in Kochi prefecture, and play a role as an alternative route in case of natural disasters.

map

Road condition from Kochi City to western area in Kochi Prefecture

It takes about 2-3 hours from western area in Kochi Prefecture to Kochi City. As a result it have a bad influence on industrial activities and emergency medical cares.
A chief road from western area in Kochi Prefecture to Kochi City is only route 56 and pedestrians walk in dangerous condition at insufficient-width sidewalk.

Awa Tunnel without sidewalk (Route 56)

Method on constructing an expressway in Japan

In Japan there are two kinds of methods on constructing an expressway. Firstly expressway-related companies (East Nippon Expressway Company Limited, West Nippon Expressway Company Limited, Central Nippon Expressway Company Limited) construct new expressway by bonds and return at toll income ("Toll expressway method"). Secondly Ministry of Land, Infrastructure and Transport and Tourism and Prefecture government contribute funds and the former construct an expressway ("Free expressway method").
Shikoku trans-expressway (Susaki-Shinjo〜Kubokawa) is now constructed on "Free expressway method".
Shikoku trans-expressway (Susaki-Shinjo〜Kubokawa) is now constructed on "Free expressway method".

susaki-ic

nakatosa-ic

tunnel

Structural standards: Class 1, Grade 3 (Expressway)
Design speed: 80km/h
Total Length: 21.8km
Width: 10.5m (1.75〜3.5〜3.5〜1.75)
Commenced year: 1997 fiscal year