South Dakota Highway 50

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 49SD 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

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

CountyLocationmi[1]kmDestinationsNotes
Buffalo 0.0000.000 SD 34Western terminus
BruleChamberlain20.14532.420 I90 Bus. westWestern end of BL I-90 concurrency
23.331–
23.450
37.548–
37.739
I90 west / I90 Bus.Eastern terminus of BL I-90, western end of I-90 concurrency
 29.642–
30.237
47.704–
48.662
I90 eastEastern end of I-90 concurrency
Charles Mix 61.98699.757 SD 44 westWestern end of SD 44 concurrency
 64.074103.117 SD 1804 south
Platte72.070115.985 SD 45 northSouthern terminus of SD 45
 78.999127.137 SD 44 eastEastern end of SD 44 concurrency
 93.827151.000 SD 1804 south
Lake Andes102.714165.302 US 18 west / US 281 southWestern end of US 18/US 281 concurrency
 112.611181.230 US 18 east / US 281 northEastern end of US 18/US 281 concurrency
Wagner117.904189.748 SD 46 westWestern end of SD 46 concurrency
 126.743203.973 SD 46 eastEastern end of SD 46 concurrency
Bon Homme 137.056220.570 SD 37 northWestern end of SD 37 concurrency
 141.175227.199 SD 37 southEastern end of SD 37 concurrency
 150.725242.568 SD 25 northSouthern terminus of SD 25
 156.817252.372 SD 52 westWestern end of SD 52 concurrency
Yankton 161.701260.233 SD 52 eastEastern end of SD 52 concurrency
 164.738265.120 SD 153 southNorthern terminus of SD 153
 165.322266.060 SD 314 eastWestern terminus of SD 314
Yankton169.768273.215 US 81 northNorthern end of US 81 concurrency
172.435277.507 US 81 south / SD 52 westEastern terminus of SD 52, southern end of US 81 concurrency
Clay 194.864313.603
SD 50 Bus. east
Western terminus of SD 50 Bus.
Vermillion196.882316.851 SD 19
 197.238317.424
SD 50 Bus. west
Eastern terminus of SD 50 Bus.
Union 202.894–
203.069
326.526–
326.808
I29 Sioux City, IA, Sioux Falls
 209.632337.370 SD 11 southNorthern terminus of southern segment of SD 11
Plymouth 212.421341.858 Iowa 3 eastContinuation into Iowa
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

  1. 1.0 1.1 "State Highway Log: Mitchell Region" (PDF). South Dakota Department of Transportation. January 2012. Retrieved December 23, 2013.

External links

Route map: Bing