Oklahoma State Highway 51
| Route information | ||||
|---|---|---|---|---|
| Maintained by ODOT | ||||
| Length | 332.8 mi (535.6 km) | |||
| Existed | June 1, 1927–present | |||
| Major junctions | ||||
| West end | US 60 at the Texas state line | |||
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| East end | AR 244 at the Arkansas state line | |||
| Location | ||||
| Country | United States | |||
| State | Oklahoma | |||
| Counties | Ellis, Dewey, Blaine, Kingfisher, Logan, Payne, Creek, Tulsa, Wagoner, Cherokee, Adair | |||
| Highway system | ||||
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State Highway 51, abbreviated to SH-51 or OK-51, is a major state highway in Oklahoma, United States. It runs for 332.8 miles (535.6 km) east–west across the state, running from the Texas state line to Arkansas. It is the third-longest state highway in the system.