| State Highway 55 | ||||
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| Maintained by ODOT | ||||
| Length: | 39.9 mi (64.2 km) | |||
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State Highway 55 is a state highway in western Oklahoma. It runs for 39.9 miles (64.2 km) from Carter, Oklahoma to the unincorporated community of Lake Valley. It has no lettered spur routes.
SH-55 begins at State Highway 34 in Carter, in eastern Beckham Co.. It heads east for six miles (10 km), where it meets State Highway 6 and overlaps it to the south. After running along the Beckham/Washita Co. line, it splits off to the east near Retrop. It then meets State Highway 44 in Sentinel. Seven miles later it meets US-183 in Rocky. It then terminates at State Highway 54 in Lake Valley.