It is owned and operated by West Nippon Expressway Company.

The route connects the city of Matsue with the Chugoku Expressway in Hiroshima Prefecture.

The final section of the expressway (48.7 km between Miyoshi-Higashi Junction and Yoshida-Kakeya Interchange) was opened on March 30, 2013.

The section between Miyoshi-Higashi Junction and Mitoya-Kisuki Interchange is toll-free; all other sections assess tolls based on distance travelled in the same manner as most other national expressways.

This article relating to the roads and highways in Japan is a stub.