South Dakota Highway 73

South Dakota Highway 73 (SD 73) is a state route that runs across western South Dakota. It begins at the Nebraska border north of Merriman, Nebraska, as a continuation of Nebraska Highway 61. It runs to the North Dakota border, where it continues as North Dakota Highway 49. It is just more than 255 miles (410 km) in length.

Highway 73
Route of SD 73 (in red)
Route information
Defined by SDCL §31-4-176
Maintained by SDDOT
Length255.291 mi[1][2] (410.851 km)
Existed1926–present
Major junctions
South end N-61 at the Nebraska border
North end ND 49 at Thunder Hawk
Location
CountiesBennett, Jackson, Haakon, Ziebach, Meade, Perkins, Corson
Highway system
  • South Dakota Highways
SD 71 SD 75

History

When designated in the 1920s, South Dakota 73 only consisted of the segment from Faith (U.S. Route 212) to Lemmon (U.S. Route 12). The remainder of the route was unnumbered.

Around 1935, SD 73 was extended south from Faith, absorbing what had been a portion of South Dakota Highway 24 to near Plainview, then southeast via a new route to Philip. From there, it was concurrent with U.S. Highway 16 to Kadoka then southward along what had been South Dakota Highway 63. It continued south to the Nebraska border south of Martin, after sharing an alignment with U.S. Highway 18. Except for minor route straightening and a new concurrency with Interstate 90, this route has not changed since.

Around 1979, the northern terminus was extended east along U.S. 12 to Thunder Hawk, where it met up with a new road to link with ND 49.

Major intersections

CountyLocationmi[1][2]kmDestinationsNotes
Cherry0.0000.000 N-61 southContinuation into Nebraska
BennettMartin12.58020.246 US 18 westWestern end of US 18 concurrency
24.64639.664 US 18 eastEastern end of US 18 concurrency
Jackson50.33981.013 SD 44
Kadoka69.951112.575 SD 248
70.310–
70.328
113.153–
113.182
I-90 eastEastern end of I-90 concurrency
76.616–
77.227
123.301–
124.285
I-90 westWestern end of I-90 concurrency
HaakonPhilip92.047148.135 US 14
116.740187.875 SD 34 eastEastern end of SD 34 concurrency
Ziebach
No major junctions
Meade145.523234.197 SD 34 westWestern end of SD 34 concurrency
Faith173.638279.443 US 212 eastEastern end of US 212 concurrency
176.801284.534 US 212 westWestern end of US 212 concurrency
Perkins206.704332.658 SD 20 eastSouthern end of SD 20 concurrency
212.698342.304 SD 20 westNorthern end of SD 20 concurrency
240.858387.623 US 12 westWestern end of US 12 concurrency
Corson254.618409.768 US 12 eastEastern end of US 12 concurrency
Sioux255.291410.851 ND 49 northContinuation into North Dakota
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

  1. "State Highway Log: Pierre Region" (PDF). South Dakota Department of Transportation. January 2012. Retrieved December 22, 2013.
  2. "State Highway Log: Rapid City Region" (PDF). South Dakota Department of Transportation. January 2012. Retrieved December 22, 2013.

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