page_title: South Dakota Highway 20
hierarchical_section_title: South Dakota Highway 20
caption_attribution_description: English: Route (in red) of South Dakota Highway 20 in the United States.
context_page_description: South Dakota Highway 20 is a 385.079-mile state highway in northern South Dakota, United States, that connects the Montana state line, west-southwest of Camp Crook, with the Minnesota state line, east-southeast of Revillo, via Buffalo, Bison, Timber Lake, Mobridge, Selby, and Watertown. From Mobridge to the Walworth–Potter county line, this highway is part of the Lewis and Clark Trail. From about Timber Lake to just west of Mobridge, this highway is part of the Native American Scenic Byway. From the Montana state line to Camp Crook, the highway is a dirt road.
  SD 20 is composed of two disconnected segments. The longer western segment extends 346 miles from Montana to Watertown. The much-shorter eastern segment extends 39 miles from west of South Shore to Minnesota. However, the South Dakota Department of Transportation indicates that SD 20 follows US 212, US 81, and Interstate 29 between the two segments.
  SD 20 originally extended from SD 45 west of Cresbard to Watertown. It was extended west to U.S. Route 83, southwest of Lowry. Later, it was extended to its current eastern terminus. Later still, it was extended to its current western terminus, replacing what had been SD 8.
context_section_description: South Dakota Highway 20 (SD 20) is a 385.079-mile (619.725 km) state highway in northern  South Dakota, United States, that connects the Montana state line, west-southwest of Camp Crook, with the Minnesota state line, east-southeast of Revillo, via Buffalo, Bison, Timber Lake, Mobridge, Selby, and Watertown. From Mobridge to the Walworth–Potter county line, this highway is part of the Lewis and Clark Trail. From about Timber Lake to just west of Mobridge, this highway is part of the Native American Scenic Byway. From the Montana state line to Camp Crook, the highway is a dirt road.
  SD 20 is composed of two disconnected segments. The longer western segment extends 346 miles (557 km) from Montana to Watertown. The much-shorter eastern segment extends 39 miles (63 km) from west of South Shore to Minnesota. However, the South Dakota Department of Transportation indicates that SD 20 follows US 212, US 81, and Interstate 29 (I-29) between the two segments.
  SD 20 originally extended from SD 45 west of Cresbard to Watertown. It was extended west to U.S. Route 83, southwest of Lowry. Later, it was extended to its current eastern terminus. Later still, it was extended to its current western terminus, replacing what had been SD 8 (and later SD 18).
caption: Map of South Dakota with SD 20 in red
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