The is a national expressway in Hyà Âgo Prefecture, Japan. 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 expressway is officially referred to as the Chà «goku-à Âdan Expressway Himeji Tottori Route. The Chà «goku-à Âdan Expressway Himeji Tottori Route is the official designation for the Sanyà  Expressway between Sanyà  Himeji-Nishi Interchange and Harima Junction, the Harima Expressway between Harima Junction and Yamazaki Junction, the Chà «goku Expressway between Yamazaki Junction and Sayo Junction, and the Tottori Expressway between Sayo Junction and Tottori Interchange (concurrent with the Chà «goku-à Âdan Expressway Himeji Tottori Route).
The route is a two-lane expressway for its entire length, with some overtaking areas. The speed limit is 70 km/h.
The first section of the expressway was opened in 2003. As of August 2019, that long section between the Sanyà  Expressway and Hyà Âgo Prefecture Route 726 is still the only part of it open to traffic.
The Harima Expressway is planned to be completed between its current northern terminus at Hyà Âgo Prefecture Route 726 and the Chà «goku Expressway in 2021. Upon completion, the total length of the expressway will be .
The entire expressway is in Hyà Âgo Prefecture.