South Dakota Highway 45

Highway 45
Highway 45
	Route of SD 45 (in red)
Route information
	Maintained by SDDOT
Length	198 mi (319 km)
Existed	1927–present
Major junctions
South end	SD 44 / SD 50 in Platte
	I-90 in Kimball; US 14 in Miller; US 212 near Faulkton; SD 20 near Cresbard; US 12 in Ipswich;
North end	ND 3 near Ashley
Location
Country	United States
State	South Dakota
Counties	Charles Mix; Brule; Buffalo; Hand; Faulk; Edmunds; McPherson;
Highway system
	South Dakota State Trunk Highway System; Interstate; US; State;

South Dakota Highway 45 is a state highway that runs north to south across much of central South Dakota, United States. The northern terminus is at the North Dakota border as a continuation of North Dakota Highway 3, and runs south to South Dakota Highway 44 and South Dakota Highway 50 at Platte. It is 198 miles (319 km) in length.