South Dakota Highway 13

Highway 13
Map of South Dakota with SD 13 in red
Route information
Maintained by SDDOT
Length	23.891 mi[1][2] (38.449 km)
Major junctions
South end	SD 34 east of Egan
Major intersections	SD 32 in Flandreau SD 324 west of Elkton
North end	US 14 north of Elkton
Location
Country	United States
State	South Dakota
Counties	Moody Brookings
Highway system
South Dakota State Trunk Highway System Interstate US State
← SD 12 → US 14

South Dakota Highway 13 (SD 13) is a 23.835-mile-long (38.359 km) state highway in Moody and Brookings counties in the U.S. state of South Dakota. It connects Flandreau with Elkton. SD 13 was originally part of SD 11's path.

SD 13 begins at an intersection with SD 34 (233rd Street) east of Egan, in the east-central part of Moody County. Here, the roadway continues to the south as 481st Avenue. This intersection is just northeast of Flandreau Municipal Airport. SD 13 travels to the north-northwest on 481st Avenue. North of 231st Street, it enters Flandreau. At Pipeston Avenue, the highway intersects the eastern terminus of SD 32. This highway leads to the business district of Flandreau. SD 13 crosses over the Big Sioux River and then leaves the city. 229th Street, just north of the city, leads to Flandreau Indian School. Here, the highway enters Flandreau Indian Reservation. Just before 228th Street is a second crossing of this river. Just north of 227th Street, the highway leaves the reservation. Between 226th and 224th Street is a crossing of Spring Creek.^[3]

At 220th Street, the highway enters the southeastern part of Brookings County. North of 218th Street, the highway begins to curve to the east, with 481st Avenue splitting off to the north. It intersects the eastern terminus of SD 324. At about the 484th Avenue intersection, SD 13 curves to the east-northeast. It then begins to skirt along the northwestern edge of Elkton. Between 485th Avenue and North Drive, the highway crosses over some railroad tracks of Union Pacific Railroad. It then curves to the north, onto 486th Avenue. Just north of 216th Street is a crossing of Medary Creek. Just south of 215th Street, the highway begins a curve to the north-northeast. It then reaches its northern terminus, an intersection with U.S. Route 14 (US 14).^[3]

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SD 13 was formerly a segment of SD 11. This was changed to SD 13 between 1932 and 1935. At that time, its original northern terminus was extended eastward to its current location at US 14 north of Elkton. This was due to a rerouting of US 14 in the early 1930s.

County	Location[3]	mi[1][2]	km	Destinations	Notes
Moody	​	0.000	0.000	SD 34 / 481st Avenue south – I-29, Pipestone, Egan	Southern terminus; roadway continues as 481st Avenue.
	Flandreau	2.834	4.561	SD 32 west (Pipestone Avenue) – Business district, City park and golf course, Museum	Eastern terminus of SD 32; leads to Flandreau City Park, Flandreau Park Golf Course, Moody County Museum, and Avera Flandreau Medical Center
Moody–Brookings county line	​	16.898	27.195	220th Street
Brookings	​	17.110	27.536	SD 324 west – I-29	Eastern terminus of SD 324
	​	23.891	38.449	US 14 – Brookings, Lake Benton	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

• List of state highways in South Dakota

Wikimedia Commons has media related to South Dakota Highway 13.

• The Unofficial South Dakota Highways Page: Highways 1-30