Sanin Expressway

San'in Expressway (山陰自動車道 "San'in Jidōsha-dō") is a proposed expressway extending from Tottori, Tottori prefecture to Mine, Yamaguchi prefecture. It will follow a path along the northern ("San'in") coast of Chūgoku region, passing through Tottori, Shimane, and Yamaguchi prefectures.

Currently, the following segments are designated as part of the National Expressway route:
*Tottori-Masuda Route (鳥取益田線): Tottori -- Masuda, Shimane
*Misumi Mine Route (三隅美祢線): Nagato, Yamaguchi -- Mine