The is a national expressway in the Chūgoku region of Japan. It is owned and operated by West Nippon Expressway Company.
Naming The expressway is officially referred to as the Chūgoku-Ōdan Expressway Onomichi Matsue Route. The Chūgoku-Ōdan Expressway Onomichi Matsue Route is the official designation for the Sanyō Expressway between Onomichi Interchange and Hiroshima Junction, the Onomichi Expressway between Onomichi Junction and Miyoshi-Higashi Junction, and the Matsue Expressway between Miyoshi-Higashi Junction and Matsue Interchange (concurrent with the Chūgoku-Ōdan Expressway Onomichi Matsue Route).
Overview The first section of the expressway was opened in 2010. The final section of the expressway (18.4 km between Kisa Interchange and Sera Interchange) was opened on March 22, 2015. The route originates from its junction with the Sanyō Expressway and extends northward. At its northern terminus it connects to the Chūgoku Expressway. The entire route is toll-free with the exception of the short (0.9 km) section between Onomichi Junction and Onomichi Toll Gate.
The route is 2 lanes for its entire length, with some overtaking areas. The speed limit is 70 km/h.
List of interchanges and features
IC - interchange, SIC - smart interchange, JCT - junction, SA - service area, PA - parking area, BS - bus stop, TN - tunnel, BR - bridge
No.NameConnectionsDist. fromOriginBus StopNotesLocationThrough to Nishiseto Expressway (planned)(22-1)Onomichi JCT Sanyō Expressway0.0OnomichiTBOnomichi TB0.91Onomichi-Kita IC National Route 4867.02Sera IC National Route 43219.2Sera3Konu ICHiroshima Prefectural Route 42431.5Miyoshi4Kisa IC National Route 18439.65Mirasaka ICHiroshima Prefectural Route 6144.0(21-1)1Miyoshi-Higashi JCTMiyoshi-Higashi IC Chūgoku ExpresswayHiroshima Prefectural Route 43449.9Through to Matsue Expressway
External links West Nippon Expressway Company