South Dakota Highway 45

Highway 45
Route of SD 45 (in red)
Route information
Defined by SDCL §31-4-165
Maintained by SDDOT
Length:	198 mi (319 km)
Existed:	1927 – present
Major junctions
South end:	SD 44 / SD 50 in Platte
North end:	ND 3 near Ashley
Location
Counties:	Charles Mix, Brule, Buffalo, Hand, Faulk, Edmunds, McPherson
Highway system
South Dakota Highways ← SD 44 SD 46 →

South Dakota Highway 45 is a state route that runs north to south across much of central South Dakota. 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 at Platte. It is 198 miles (319 km) in length.

History

South Dakota 45 was established around 1927. The northern end was at the intersection of South Dakota Highway 10 in Leola, and the southern end was at the intersection of present-day South Dakota Highway 50 and Charles Mix County Road 49.

By 1932, it was extended south along what was part of South Dakota Highway 47 to Wheeler. By 1936, SD 45 was truncated at Kimball (U.S. Highway 16), as U.S. Highway 281 supplanted the SD 45 designation to the south. In the early 1950s, when US 281 was relocated several miles east, SD 45 was extended back south to SD 50.

Around 1970, SD 50 had been realigned to intersect South Dakota Highway 44 west of Platte, and SD 45 was extended south along the old alignment to Platte, where it remains today.

The north end of the route has remained in its current configuration since 1936.

Major intersections

County	Location	mi	km	Destinations	Notes
Charles Mix	Platte			SD 44 / SD 50 – Winner
Brule	​			I-90 east – Mitchell	East end of I-90 concurrency, exit 289.
	Kimball			I-90 west – Rapid City	West end of I-90 concurrency, exit 284.
Buffalo	​			SD 34 – Wessington Springs
Hand	Miller			US 14 east – St. Lawrence	South end of US 14 concurrency
				US 14 west – Pierre	North end of US 14 concurrency
	​			SD 26 east	South end of SD 26 concurrency
	​			SD 26 west	North end of SD 26 concurrency
Hand–Faulk county line	​			US 212 east – Redfield	South end of US 212 concurrency
Faulk	​			US 212 west – Faulkton	North end of US 212 concurrency
	​			SD 20 east – Northville	South end of SD 20 concurrency
	​			SD 20 west – Onaka	North end of SD 20 concurrency
Edmunds	Ipswich			US 12 west – Roscoe	West end of US 12 concurrency
	​			US 12 east – Aberdeen	East end of US 12 concurrency
McPherson	Leola			SD 10 east – Britton	East end of SD 10 concurrency
	​			SD 239 north – Long Lake
	​			SD 10 west / SD 247 south	West end of SD 10 concurrency
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

External links

• South Dakota Highways Page: Highways 31-60