South Dakota Highway 20 Article Index for
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Information About

South Dakota Highway 20




  highway Name Highway 20
  length Mi 432
  established 1929
  direction A West
  starting Terminus Montana border west of Camp Crook
  direction B East
  ending Terminus east of Revillo
  cities Buffalo , Bison , Timber Lake , Mobridge , Selby , Hoven , Mellette , Florence , Watertown , South Shore , Revillo
  previous Type SD
  previous Route 19A
  next Type SD
  next Route 20A


South Dakota Highway 20 is a state route that largely runs from border to border across northern South Dakota . It consists of two segments:


The total length of this route is 432 miles (695 kilometers).


HISTORY

South Dakota 20 was implemented in 1929, but it was much shorter. The western terminus was at South Dakota Highway 45 northeast of Faulkton , and terminated in Watertown. Around 1944, the western terminus was moved further west, to U.S. Highway 83 .

In the early 1950's, a short extension west was made again, to the town of Akaska . The eastern terminus was moved as well, to U.S. Highway 77 south of Milbank ; the extension to the Minnesota border occurred in 1954.

In the late 1960's, the short stub between Akaska and U.S. 83 was redesignated as South Dakota Highway 20 Spur . SD 20 was extended northward along U.S. 83 to U.S. Highway 12 , then through Mobridge and across north central and northwest South Dakota, absorbing the alignment of what had been South Dakota Highway 8 .


LIST OF COUNTIES

South Dakota 20 currently travels through the following counties, from west to east:



LEGAL DEFINITION

The route of SD 20 is defined in South Dakota Codified Laws ยง 31-4-145. {Link without Title}


EXTERNAL RESOURCES