South Dakota Highway 73

Highway 73
Route of SD 73 (in red)
Route information
Maintained by SDDOT
Length	255.291 mi[1][2] (410.851 km)
Existed	1926–present
Major junctions
South end	N-61 at the Nebraska border
Major intersections	US 18 in Martin I-90 in Kadoka US 14 in Philip US 212 in Faith SD 20 near Bison US 12 in Lemmon
North end	ND 49 at Thunder Hawk
Location
Country	United States
State	South Dakota
Counties	Bennett, Jackson, Haakon, Ziebach, Meade, Perkins, Corson
Highway system
South Dakota State Trunk Highway System Interstate US State
← SD 71 → SD 75

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.