| Country: | JPN |
| Type: | Expressway |
| Route: | Yonago |
| Alternate Name: | 米子自動車道 |
| Length Km: | 66.5 |
| Established: | 1989 |
| Terminus A: | Ochiai Junction in Maniwa, Okayama Chūgoku Expressway |
| Cities: | Hōki |
| Terminus B: | Yonago Interchange in Yonago, Tottori San'in Expressway |
The is a national expressway in the Chūgoku region of Japan. It is owned and operated by West Nippon Expressway Company.
The expressway is officially referred to as the Chūgoku-Ōdan Expressway Okayama Yonago Route.
The route connects the city of Yonago with the Chūgoku Expressway in Okayama Prefecture. From the terminus at Yonago Interchange, there are plans to extend the route northward to the terminus of the city of Sakaiminato.
The first section of the expressway was opened to traffic in 1989 and the entire route was completed in 1992. The route was originally 2 lanes only, one in each direction. However expansion to two lanes in each direction has proceeded gradually over the years. Expansion of the southern half (between Ochiai Junction and Hiruzen Interchange) was completed in 2011.
| No. | Name | Connections | Dist. from Origin | Bus Stop | Notes | Location | ||
|---|---|---|---|---|---|---|---|---|
| (15) | Ochiai JCT | Chūgoku Expressway | 0.0 | Maniwa | Okayama | |||
| 1 | Kuse IC | National Route 181 | 3.2 | ○ | ||||
| PA | Ueno PA | 7.2 | ||||||
| TN | Suribachiyama Tunnel | northbound: 4090m (13,420feet) southbound: 4100m (13,500feet) | ||||||
| 2 | Yuhara IC | National Route 313 Hōjō Yubara Road (planned) | 15.6 | ◆ | Bus stop closed | |||
| TN | Tamadayama Tunnel | northbound: 1655m (5,430feet) southbound: 1630m (5,350feet) | ||||||
| BS | Futagawa BS | 24.0 | ◆ | Bus stop closed | ||||
| SA | Hiruzen-kōgen SA | 32.5 | ||||||
| 3 | Hiruzen IC | National Route 482 | 33.5 | |||||
| TN | Mihirayama Tunnel | Length - 1529m (5,016feet) | ||||||
| Kōfu | Tottori | |||||||
| TN | Miyaichi Tunnel | northbound: 340m (1,120feet) southbound: 370m (1,210feet) | ||||||
| 4 | Kōfu IC | National Route 181 National Route 183 National Route 482 Kōfu Miyoshi Road (planned) | 48.9 | ○ | ||||
| TN | Neubara Tunnel | Length - 720m (2,360feet) | Hōki | |||||
| 5 | Mizoguchi IC | 57.2 | ○ | |||||
| 5-1 | Daisen PA Daisen-kōgen SIC | 61.7 | ○ | |||||
| TB | Yonago TB | 66.1 | Yonago | |||||
| 6 (16) | Yonago IC/JCT | San'in Expressway National Route 431 | 66.5 | JCT:Northbound exit only IC:Southbound entrance only | ||||
| Through to Sakaiminato (planned) | ||||||||