South Dakota Highway 20


South Dakota Highway 20

Infobox road
state=SD
marker_

highway_name=Highway 20
length_mi=432
established=1929
decommissioned=
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 the northern part of the U.S. state of South Dakota. It consists of two segments:

* The longer segment begins at the Montana border west of Camp Crook, and terminates at the junction of U.S. Highway 212 in Watertown. This segment is 393 miles in length.
* A second segment begins at a junction with the old alignment of U.S. Highway 81 west of Interstate 29 exit 193. It continues eastward to the Minnesota border east of Revillo, continuing as Minnesota State Highway 40. This second segment is 39 miles in length.

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:

* Harding
* Perkins
* Ziebach
* Corson
* Walworth
* Potter
* Faulk
* Spink
* Clark
* Codington
* Grant

Legal Definition

The route of SD 20 is defined in South Dakota Codified Laws [http://legis.state.sd.us/statutes/DisplayStatute.aspx?Type=Statute&Statute=31-4-145 § 31-4-145] .

External links

* [http://www.northernplainshighways.org/sdakota/sd1-30.html#SD-20 South Dakota Highways Page: Highways 1-30]


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