South Dakota Highway 50

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Highway 50 marker

Highway 50
Route of SD 50 (in red)
Route information
Defined by SDCL §31-4-170
Maintained by SDDOT
Length: 212.421 mi[1] (341.858 km)
Existed: 1926 – present
Major junctions
West end: SD 34 east of Fort Thompson
East end: Iowa 3 near Richland
Location
Counties: Buffalo, Brule, Charles Mix, Bon Homme, Yankton, Clay, Union
Highway system

South Dakota Highways

SD 49 SD 52

South Dakota Highway 50 (SD 50) is a state route serving south central and southeast South Dakota. The current alignment begins at the junction of South Dakota Highway 34 at "Lee's Corner" east of Fort Thompson, and ends at the Iowa border near Richland, where it continues as Iowa Highway 3. It is about 212 miles (341 km) in length.

History[edit]

South Dakota 50 was designated on the route known as the Sunshine Highway. When it was created in the 1920s, it ran the entire length of southern South Dakota, from the Wyoming border west of Edgemont, to the Iowa border at Sioux City.

When U.S. Highway 18 was designated in the late 1920s, it replaced the SD 50 designation from the Wyoming border at Ravinia (east of Lake Andes). SD 50 continued in southeast South Dakota.

Around 1940, SD 50 was extended northwest of its old terminus. It assumed a portion of alignment of South Dakota Highway 45 through Geddes, and South Dakota Highway 47 through Academy; the northern terminus became U.S. Highway 16 near Pukwana.

Around 1950, the east terminus was rerouted. At U.S. Highway 77 (with which it had previously shared a dual alignment to Sioux City), SD 50 was extended east to the Iowa border.

In 1976, the northwest terminus was again extended. It was routed west to Chamberlain, then assumed a segment of SD 47 (which had been realigned west) to its new northern terminus at SD 34 east of Fort Thompson.

Major intersections[edit]

County Location Mile[1] km Destinations Notes
Buffalo   0.000 0.000 SD 34 Western terminus
Brule Chamberlain 20.145 32.420 I‑90 Bus. west Western end of BL I-90 concurrency
23.331–
23.450
37.548–
37.739
I‑90 west / I‑90 Bus. Eastern terminus of BL I-90, western end of I-90 concurrency
  29.642–
30.237
47.704–
48.662
I‑90 east Eastern end of I-90 concurrency
Charles Mix   61.986 99.757 SD 44 west Western end of SD 44 concurrency
  64.074 103.117 SD 1804 south
Platte 72.070 115.985 SD 45 north Southern terminus of SD 45
  78.999 127.137 SD 44 east Eastern end of SD 44 concurrency
  93.827 151.000 SD 1804 south
Lake Andes 102.714 165.302 US 18 west / US 281 south Western end of US 18/US 281 concurrency
  112.611 181.230 US 18 east / US 281 north Eastern end of US 18/US 281 concurrency
Wagner 117.904 189.748 SD 46 west Western end of SD 46 concurrency
  126.743 203.973 SD 46 east Eastern end of SD 46 concurrency
Bon Homme   137.056 220.570 SD 37 north Western end of SD 37 concurrency
  141.175 227.199 SD 37 south Eastern end of SD 37 concurrency
  150.725 242.568 SD 25 north Southern terminus of SD 25
  156.817 252.372 SD 52 west Western end of SD 52 concurrency
Yankton   161.701 260.233 SD 52 east Eastern end of SD 52 concurrency
  164.738 265.120 SD 153 south Northern terminus of SD 153
  165.322 266.060 SD 314 east Western terminus of SD 314
Yankton 169.768 273.215 US 81 north Northern end of US 81 concurrency
172.435 277.507 US 81 south / SD 52 west Eastern terminus of SD 52, southern end of US 81 concurrency
Clay   194.864 313.603
SD 50 Bus. east
Western terminus of SD 50 Bus.
Vermillion 196.882 316.851 SD 19
  197.238 317.424
SD 50 Bus. west
Eastern terminus of SD 50 Bus.
Union   202.894–
203.069
326.526–
326.808
I‑29 – Sioux City, IA, Sioux Falls
  209.632 337.370 SD 11 south Northern terminus of southern segment of SD 11
Plymouth   212.421 341.858 Iowa 3 east Continuation into Iowa
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References[edit]

  1. ^ a b "State Highway Log: Mitchell Region". South Dakota Department of Transportation. January 2012. Retrieved December 23, 2013. 

External links[edit]

Route map: Google / Bing