The is a national

expressway Expressway may refer to: * Controlled-access highway, the highest-grade type of highway with access ramps, lane markings, etc., for high-speed traffic. * Limited-access road, a lower grade of highway or arterial road. *Expressway, the fictional s ...

Okayama Prefecture is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Okayama Prefecture has a population of 1,906,464 (1 February 2018) and has a geographic area of 7,114 Square kilometre, km2 (2,746 sq mi). Okayama Prefectur ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

. It is owned and operated by

West Nippon Expressway Company The , abbreviated as , is one of the main operators of expressways and toll roads in Japan. It is headquartered on the 19th floor of Dojima Avanza in Kita-ku, Osaka. The company was established on October 1, 2005, as a result of the privatization o ...

Naming

The expressway is officially referred to as the Chūgoku-Ōdan Expressway Okayama Yonago Route. The Chūgoku-Ōdan Expressway Okayama Yonago Route is the official designation for the

Sanyō Expressway , stylized as SANYO, is a Japanese electronics company and formerly a member of the ''Fortune'' Global 500 whose headquarters was located in Moriguchi, Osaka prefecture, Japan. Sanyo had over 230 subsidiaries and affiliates, and was founded b ...

between Okayama Interchange and Okayama Junction, the Okayama Expressway between Okayama Junction and Hokubō Junction, the

Chūgoku Expressway The (part of Asian Highway Network ) is an expressway in Japan, which extends from Suita, Osaka to Shimonoseki, Yamaguchi. It connects Kansai and Chūgoku regions in western Honshu, Japan's main island. Other major cities along the expressway ...

between Hokubō Junction and Ochiai Junction, and the Yonago Expressway between Ochiai Junction and Yonago Interchange (concurrent with the Chūgoku-Ōdan Expressway Okayama Yonago Route).

Overview

The first section of the expressway was opened in 1991. The final section of the expressway (41.2 km between Okayama-Sōja Interchange and Hokubō Junction) was opened on March 15, 1997. The route originates from its junction with the Sanyō Expressway and extends northward. At its northern terminus it connects to the Chūgoku Expressway. The expressway is 4 lanes from Okayama Junction to Kayō Interchange and the remainder is 2 lanes. The speed limit is 80 km/h on 4-laned sections and 70 km/h on 2-laned sections.

List of interchanges and features

* IC - interchange, SIC - smart interchange, JCT -

junction Junction may refer to: Arts and entertainment * ''Junction'' (film), a 2012 American film * Jjunction, a 2002 Indian film * Junction (album), a 1976 album by Andrew Cyrille * Junction (EP), by Basement Jaxx, 2002 * Junction (manga), or ''Hot ...

, SA -

service area Service area may refer to: * Rest area, a public facility, located next to a large thoroughfare such as a highway, at which drivers and passengers can rest, eat, or refuel * Service area (computing) In computing, data recovery is a process of r ...

, PA - parking area, BS -

bus stop A bus stop is a place where buses stop for passengers to get on and off the bus. The construction of bus stops tends to reflect the level of usage, where stops at busy locations may have shelters, seating, and possibly electronic passenger ...

, TN - tunnel, BR -

bridge A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually somethi ...

External links

West Nippon Expressway Company
Expressways in Japan {{Japan-road-stub