South Dakota Highway 47W

Highway 47
Route of SD 47 (in red)
Route information
Defined by SDCL §31-4-167
Maintained by SDDOT
Length:	240.866 mi (387.636 km)
Existed:	1927 – present
Major junctions
South end:	N-137
North end:	37th Avenue Southeast at the North Dakota border
Highway system
South Dakota Highways Interstate U.S. State ← SD 46 SD 48 →

South Dakota Highway 47 (SD 47) is a state route that runs north to south across the central portion of South Dakota. It begins at an unnumbered highway at the North Dakota border north of Eureka, and ends at the Nebraska border, where it becomes Nebraska Highway 137. It is just under 241 miles (388 km) in length.

When initially established in the mid-1920s, South Dakota 47 extended from U.S. Highway 16 at Pukwana to U.S. Highway 18 at Wheeler, along what is currently portions of South Dakota Highway 50 and Charles Mix County Highway 49. Several alignment changes have occurred since then:

South Dakota Highway 47W was a state route located in central South Dakota. SD 47W designated around 1965, on a newly constructed road linking Fort Thompson and Reliance. This designation was used only for 10 years; it was made part of South Dakota Highway 47 when a portion of that route was realigned.

Route map: Google