List of state highways in South Dakota

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 two-digit highways. Three-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 two-digit route.[1]

Standard South Dakota state highway shields
System information
NotesSouth Dakota highways are generally state-maintained.
Highway names
InterstatesInterstate X (I-X)
US HighwaysU.S. Highway X (US X)
State(State) Highway X (SD X)
System links
  • South Dakota Highways

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.[1]

State highways
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.
Routes in italics are no longer in service
South Dakota Highway 8
South Dakota Highway 9
South Dakota Highway 10
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 20 Spur
South Dakota Highway 20A
South Dakota Highway 20P
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
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
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
South Dakota Highway 50
South Dakota Highway 52
South Dakota Highway 53
South Dakota Highway 54
South Dakota Highway 55
South Dakota Highway 59
South Dakota Highway 61
South Dakota Highway 63
South Dakota Highway 65
South Dakota Highway 71
South Dakota Highway 73
South Dakota Highway 75
South Dakota Highway 79
South Dakota Highway 81
South Dakota Highway 83
South Dakota Highway 85
South Dakota Highway 87
South Dakota Highway 89
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
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 231
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
South Dakota Highway 314
South Dakota Highway 324
South Dakota Highway 365
South Dakota Highway 377
South Dakota Highway 391
South Dakota Highway 407
South Dakota Highway 423
South Dakota Highway 435
South Dakota Highway 437
South Dakota Highway 439
South Dakota Highway 443
South Dakota Highway 445
South Dakota Highway 471
South Dakota Highway 473
South Dakota Highway 514
South Dakota Highway 1804
South Dakota Highway 1806

See also
  •  U.S. Roads portal

References
  1. Geelhart, Chris. "The Unofficial South Dakota Highways Page". Retrieved January 17, 2018.
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