State Highway 20 | ||||
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Route information | ||||
Maintained by ODOT | ||||
Length: | 142.7 mi (229.7 km) | |||
Major junctions | ||||
West end: | SH-18 near Ralston | |||
East end: | Route 43 at the Missouri state line (concurrent with AR 43) | |||
Highway system | ||||
Oklahoma State Highway System
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State Highway 20 (abbreviated SH-20) is a highway in northeastern Oklahoma. Its eastern terminus is at the corner of Oklahoma, Arkansas, and Missouri near Southwest City, Missouri; its western terminus is at State Highway 18 near Ralston. The highway runs a total length of 142.7 miles (229.7 km). It has no lettered spur routes.
SH-20 begins just north of the Arkansas River at SH-18 near Ralston. From there, it heads east through Osage County for 20 miles (32 km) without crossing any other highway. At mile 20.4, it meets State Highway 99 in Hominy. East of Hominy, SH-20 crosses Lake Skiatook before passing through Skiatook and entering Tulsa County. Shortly after entering Tulsa County, SH-20 has a junction with SH-11. Four miles later, it has an interchange with US-75. After running through Collinsville, it turns southward onto the US-169 freeway.