South Dakota Highway 46

Highway 46
Highway 46
	Route of SD 46 (in red)
Route information
	Maintained by SDDOT
Length	105.535 mi (169.842 km)
Existed	1936–present
Major junctions
West end	US 18 / US 281 in Pickstown
	I-29 in Beresford
East end	Iowa 10 at Iowa state line
Location
Country	United States
State	South Dakota
Counties	Charles Mix, Bon Homme, Yankton County, Clay, Turner, Lincoln, Union
Highway system
	South Dakota State Trunk Highway System; Interstate; US; State;

South Dakota Highway 46 is a state route that runs west to east across southeastern South Dakota. It begins at the junction of U.S. Highway 18 and U.S. Highway 281 in Pickstown, and runs due east to nearly the Iowa border, before curving south to cross the border and meeting Iowa Highway 10. It is 107 miles (172 kilometers) in length.

History

South Dakota 46 was established around 1935. Its initial alignment only extended west to U.S. Highway 81. The extension further west occurred around 1960.

Major intersections

County	Location	mi^[1]	km	Destinations	Notes
Charles Mix	Pickstown	0.000	0.000	US 18 / US 281
	Wagner	11.598	18.665	SD 50 west	West end of SD 50 concurrency
		20.437	32.890	SD 50 east	East end of SD 50 concurrency
Bon Homme		28.439	45.768	SD 37
Bon Homme		41.353	66.551	SD 25
Yankton		57.437	92.436	US 81
Clay–Turner county line		73.511	118.304	SD 19 north	West end of SD 19 concurrency
Clay–Turner county line		79.501	127.944	SD 19 south / SD 19A north	East end of SD 19 concurrency
Union–Lincoln county line	Beresford	87.982	141.593	I-29
Union–Lincoln county line		96.503	155.307	SD 11
Big Sioux River		105.535	169.842	South Dakota–Iowa state line
Sioux	Buncombe Township			Iowa 10 east	Continuation into Iowa
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus