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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
Major intersections
I-90 in Kimball
US 14 in Miller
US 212 near Faulkton
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
← SD 44
→ SD 46
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.
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