South Dakota Highway 43

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Highway 43
Location of SD 43 (in red)
Route information
Maintained by SDDOT
Length	1.131 mi[1] (1.820 km)
Existed	1976–present
Major junctions
South end	N-11 at the Nebraska state line south of Fairfax
North end	US 18 near Fairfax
Location
Country	United States
State	South Dakota
Counties	Gregory
Highway system
South Dakota State Trunk Highway System Interstate US State
← SD 42 → SD 44

South Dakota Highway 43 (SD 43) is a 1.131-mile-long (1.820 km) state highway that exists entirely in the southern part of Gregory County in the southern part of the U.S. state of South Dakota. It begins as an extension of Nebraska Highway 11 (N-11) at the Nebraska state line south of Fairfax. It travels northwest to an intersection with U.S. Route 18 (US 18) south-southwest of the town.