It is owned and operated by West Nippon Expressway Company.

It is signed as E29 under the Ministry of Land, Infrastructure, Transport and Tourism's "2016 Proposal for Realization of Expressway Numbering.

The route is a two-lane expressway for its entire length, with some overtaking areas.

As of August 2019, that 12.8 kilometres (8.0 mi) long section between the Sanyō Expressway and Hyōgo Prefecture Route 726 is still the only part of it open to traffic.

Upon completion, the total length of the expressway will be 24.2 kilometres (15.0 mi).