South Dakota Highway 45

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 at Platte. It is 198 miles (319 km) in length.

Highway 45 marker

Highway 45

Route of SD 45 (in red)
Route information
Maintained by SDDOT
Length198 mi (319 km)
Existed1927–present
Major junctions
South end SD 44 / SD 50 in Platte
Major intersections
North end ND 3 near Ashley
Location
CountryUnited States
StateSouth Dakota
Counties
Highway system
  • South Dakota State Trunk Highway System
← SD 44→ SD 46

History

SD 45 was established around 1927. The southern terminus was at the intersection of present-day SD 50 and County Road 49 (CR 49) and the northern terminus was at the intersection of SD 10 in Leola.

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

Around 1970, SD 50 had been realigned to intersect SD 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
CountyLocationmikmDestinationsNotes
Charles MixPlatte SD 44 / SD 50 – WinnerSouthern terminus
Brule​
 I-90 east – Mitchell		Eastern end of I-90 concurrency, Exit 289.
Kimball
 I-90 west – Rapid City		Western end of I-90 concurrency, Exit 284.
Buffalo​ SD 34 – Wessington Springs
HandMiller
 US 14 east – St. Lawrence		Southern end of US 14 concurrency

 US 14 west – Pierre		Northern end of US 14 concurrency
​
 SD 26 east		Southern end of SD 26 concurrency
​
 SD 26 west		Northern end of SD 26 concurrency
Hand–Faulk
county line		​
 US 212 east – Redfield		Southern end of US 212 concurrency
Faulk​
 US 212 west – Faulkton		Northern end of US 212 concurrency
​
 SD 20 east – Northville		Southern end of SD 20 concurrency
​
 SD 20 west – Onaka		Northern end of SD 20 concurrency
EdmundsIpswich
 US 12 west – Roscoe		Western end of US 12 concurrency
​
 US 12 east – Aberdeen		Eastern end of US 12 concurrency
McPhersonLeola
 SD 10 east – Britton		Eastern end of SD 10 concurrency
​
 SD 239 north – Long Lake
​

 SD 10 west / SD 247 south		Northern terminus; western end of SD 10 concurrency
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References
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