South Dakota Highway 20

From Wikipedia, the free encyclopedia
Jump to: navigation, search

Highway 20 marker

Highway 20
Route of SD 20 (in red)
Route information
Defined by SDCL §31-4-145
Maintained by SDDOT
Length: 428.852 mi[1][2][3] (690.170 km)
Existed: 1929 – present
Western section
Length: 389.828 mi[1][2][3] (627.367 km)
West end: Montana state line near Camp Crook
Major
junctions:
US 85 in Buffalo
US 12 in Mobridge
US 83 in Selby
US 281 west of Mellette
East end: US 212 in Watertown
Eastern section
Length: 39.024 mi[3] (62.803 km)
West end: I‑29 / US 81 west of South Shore
East end: MN 40 at the Minnesota state line east of Revillo
Location
Counties: Harding, Perkins, Ziebach, Dewey, Corson, Walworth, Potter, Faulk, Spink, Clark, Codington, Grant
Highway system

South Dakota Highways

SD 19A SD 20A

South Dakota Highway 20 (SD 20) is a state route that largely runs from border to border across the northern part of the U.S. state of South Dakota that consists of two segments. The longer segment begins at the Montana border west of Camp Crook, and terminates at the junction of U.S. Route 212 (US 212) in Watertown. This segment is just less than 390 miles (630 km) in length. A second segment begins just west of an interchange with Interstate 29 (I-29) and US 81. It continues eastward to the Minnesota border east of Revillo, then becomes Minnesota State Highway 40 (MN 40). This second segment is just over 39 miles (63 km) in length, and the total length of the route is about 429 miles (690 km).

History[edit]

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 1950s, 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 1960s, 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.

Major intersections[edit]

County Location Mile[1][2][3] km Destinations Notes
Carter   0.000 0.000 Tie Creek Road Continuation into Montana
Harding Buffalo 26.130 42.052 US 85 north – Bowman, ND Northern end of US 85 concurrency
  27.655 44.506 US 85 south – Belle Fourche Southern end of US 85 concurrency
  50.030 80.515 SD 79 south – Newell Western end of SD 79 concurrency
  54.483 87.682 SD 79 north – Reeder, ND Eastern end of SD 79 concurrency
Perkins   72.193 116.183 SD 75 north – Hettinger, ND Southern terminus of SD 75
  95.210 153.226 SD 73 north – Lemmon Northern end of SD 73 concurrency
  101.187 162.845 SD 73 south – Faith Southern end of SD 73 concurrency
Ziebach   127.223 204.746 SD 65 south – Dupree Western end of SD 65 concurrency
Dewey Isabel 130.881 210.633 SD 65 north – McIntosh Eastern end of SD 65 concurrency
  142.647 229.568 SD 63 south – Eagle Butte Western end of SD 63 concurrency
  164.952 265.465 SD 63 north – McLaughlin Eastern end of SD 63 concurrency
Corson   182.033 292.954 US 12 west – McLaughlin Western end of US 12 concurrency
  185.095 297.882 SD 1806 south Western end of SD 1806 concurrency
  186.267 299.768 SD 1806 north – Fort Yates, ND Eastern end of SD 1806 concurrency
Walworth Mobridge 190.508 306.593 SD 1804 north – Pollock Western end of SD 1804 concurrency
  194.386 312.834 SD 1804 south – Akaska Eastern end of SD 1804 concurrency
  208.759 335.965 US 83 north – Mound City Northern end of US 83 concurrency
Selby 211.623 340.574 SD 130 east – Java Western terminus of SD 130
  215.876 347.419 US 12 east – Bowdle, Aberdeen Eastern end of US 12 concurrency
  224.663 361.560 SD 144 west – Akaska Eastern terminus of SD 144
  230.710 371.292 SD 83 south – Agar, Pierre Southern end of US 83 concurrency
  243.723 392.234 SD 47 north Northern end of SD 47 concurrency
Potter   247.403 398.157 SD 47 south – Lebanon Southern end of SD 47 concurrency
Faulk   284.415 457.722 SD 45 north – Ipswich Northern end of SD 45 concurrency
  286.422 460.952 SD 45 south – Miller Southern end of SD 45 concurrency
Spink   314.227 505.699 US 281 – Aberdeen, Redfield
Conde 334.227 537.886 SD 37 north – Verdon, Groton Northern end of SD 37 concurrency
  334.236 537.901 SD 37 south – Turton, Doland Southern end of SD 37 concurrency
Clark   362.337 583.125 SD 25 – Webster, DeSmet
Codington Watertown 389.828 627.367 US 212 – Henry, Kranzburg
Gap in route
Codington   389.828 627.367 157th Street Begin state maintenance
  392.017–
392.217
630.890–
631.212
I‑29 / US 81 – Fargo, ND, Brookings
Grant   412.690 664.160 SD 15 north / SD 158 east – Milbank Western terminus of SD 158, northern end of SD 15 concurrency
  419.712 675.461 SD 15 south – Clear Lake Southern end of SD 15 concurrency
Lac qui Parle   428.852 690.170 MN 40 east – Marietta Continuation into Minnesota
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also[edit]

References[edit]

  1. ^ a b c "State Highway Log: Rapid City Region". South Dakota Department of Transportation. January 2012. Retrieved December 26, 2013. 
  2. ^ a b c "State Highway Log: Pierre Region". South Dakota Department of Transportation. January 2012. Retrieved December 26, 2013. 
  3. ^ a b c d "State Highway Log: Aberdeen Region". South Dakota Department of Transportation. January 2012. Retrieved December 26, 2013. 

External links[edit]

Route map: Google / Bing