List of South Dakota numbered highways

Standard South Dakota highway shields Two digits: 24 in x 24 in (610 mm x 610 mm) Three digits: 30 in x 24 in (900 mm x 610 mm)
System information
Notes:	South Dakota highways are generally state-maintained.
Highway names
Interstates:	Interstate X (I-X)
US Routes:	U.S. Highway X (US X)
State:	(State) Highway X (SD X)

View of an actual South Dakota state highway sign. The signs enclose the route number within the state's shape on top of a green background.

South Dakota's state highways were assigned in a numbering pattern that followed that of the U.S. Highways followed upon their inception. East-west highways carried even numbers and increased from north to south – while north-south highways carried odd numbers and increased from east to west. This holds true only for 2-digit highways. 3-digit highways follow the odd-even routing, but do not sequentially remain near a "parent" route as a spur or alternate route, instead being more independent of any parent 2d route.

The Bureau of Indian Affairs maintains a set of routes within the reservations of western South Dakota – using the standard BIA shield on green background.

Decommissioned highway numbers are listed in italics.

State Highways

Highways 1–10

• South Dakota Highway 8
• South Dakota Highway 9
• South Dakota Highway 10

Highways 11–20

• South Dakota Highway 11
• South Dakota Highway 12
• South Dakota Highway 13
• South Dakota Highway 15
• South Dakota Highway 15A
• South Dakota Highway 15Y
• South Dakota Highway 16
• South Dakota Highway 16B
• South Dakota Highway 17
• South Dakota Highway 18
• South Dakota Highway 19
• South Dakota Highway 19A
• South Dakota Highway 20
• South Dakota Highway 20A
• South Dakota Highway 20 Spur

Highways 21–30

• South Dakota Highway 21
• South Dakota Highway 22
• South Dakota Highway 22 Spur
• South Dakota Highway 23
• South Dakota Highway 24
• South Dakota Highway 24A
• South Dakota Highway 25
• South Dakota Highway 26
• South Dakota Highway 27
• South Dakota Highway 28
• South Dakota Highway 30

Highways 31–40

• South Dakota Highway 32
• South Dakota Highway 34
• South Dakota Highway 35
• South Dakota Highway 36
• South Dakota Highway 37
• South Dakota Highway 37A
• South Dakota Highway 38
• South Dakota Highway 38A
• South Dakota Highway 40
• South Dakota Highway 40A

Highways 41–50

• South Dakota Highway 41
• South Dakota Highway 42
• South Dakota Highway 43
• South Dakota Highway 44
• South Dakota Highway 45
• South Dakota Highway 46
• South Dakota Highway 46 Spur
• South Dakota Highway 47
• South Dakota Highway 47W
• South Dakota Highway 48
• South Dakota Highway 49

Highways 51–60

• South Dakota Highway 50
• South Dakota Highway 52
• South Dakota Highway 53
• South Dakota Highway 54
• South Dakota Highway 55
• South Dakota Highway 59

Highways 61–70

• South Dakota Highway 61
• South Dakota Highway 63
• South Dakota Highway 65

Highways 71–80

• South Dakota Highway 71
• South Dakota Highway 73
• South Dakota Highway 75
• South Dakota Highway 79

Highways 81–100

• South Dakota Highway 81
• South Dakota Highway 83
• South Dakota Highway 85
• South Dakota Highway 87
• South Dakota Highway 89

Highways 101–200

• South Dakota Highway 100
• South Dakota Highway 101
• South Dakota Highway 102
• South Dakota Highway 103
• South Dakota Highway 105
• South Dakota Highway 106
• South Dakota Highway 109
• South Dakota Highway 115
• South Dakota Highway 116
• South Dakota Highway 123
• South Dakota Highway 127
• South Dakota Highway 130
• South Dakota Highway 134
• South Dakota Highway 136
• South Dakota Highway 139
• South Dakota Highway 144
• South Dakota Highway 147
• South Dakota Highway 153
• South Dakota Highway 158
• South Dakota Highway 168

Highways 201–300

• South Dakota Highway 203
• South Dakota Highway 204
• South Dakota Highway 214
• South Dakota Highway 218
• South Dakota Highway 224
• South Dakota Highway 230
• South Dakota Highway 232
• South Dakota Highway 235
• South Dakota Highway 236
• South Dakota Highway 238
• South Dakota Highway 239
• South Dakota Highway 240
• South Dakota Highway 244
• South Dakota Highway 245
• South Dakota Highway 247
• South Dakota Highway 248
• South Dakota Highway 249
• South Dakota Highway 251
• South Dakota Highway 253
• South Dakota Highway 258
• South Dakota Highway 262
• South Dakota Highway 264
• South Dakota Highway 271
• South Dakota Highway 273
• South Dakota Highway 296
• South Dakota Highway 298

Highways 301–400

• South Dakota Highway 314
• South Dakota Highway 324
• South Dakota Highway 365
• South Dakota Highway 377
• South Dakota Highway 391

Highways 401–1806

• South Dakota Highway 407
• South Dakota Highway 423
• South Dakota Highway 435
• South Dakota Highway 437
• South Dakota Highway 439
• South Dakota Highway 445
• South Dakota Highway 471
• South Dakota Highway 473
• South Dakota Highway 514
• South Dakota Highway 1804
• South Dakota Highway 1806

Interstate Highways

• Interstate 29
• Interstate 90
• Interstate 190
• Interstate 229

U.S. Highways

• U.S. Route 12
• U.S. Route 14
• U.S. Route 14A
• U.S. Route 16
• U.S. Route 16A
• U.S. Route 18
• U.S. Route 77
• U.S. Route 81
• U.S. Route 83
• U.S. Route 85
• U.S. Route 85E
• U.S. Route 85A
• U.S. Route 183
• U.S. Route 212
• U.S. Route 216
• U.S. Route 281
• U.S. Route 385

External links

• Unofficial South Dakota Highways Page