Contents
List of special routes of the United States Numbered Highway System
A special route of the United States Numbered Highway System is a route that branches off a U.S. Highway in order to divert traffic from the main highway. Special routes are distinguished from main routes by, in most cases, the addition of an auxiliary plate that describes what type of route it is, while the main highway carries no such sign. In some locations, a single letter is placed after the route number to denote the special route type in lieu of the auxiliary plate. Among members of the roadgeek community, these routes are often called auxiliary or bannered U.S. Highways. There are four main types of special routes — alternate, business, bypass, and temporary; though other route types exist. A unique type of route in the U.S. Route system uses directional letter suffixes following the route number. These are known as divided U.S. Routes and are generally not considered to be special routes. The following U.S. Highway special routes have existed:
US 1 – US 101
US 1
US 2
US 3
US 4
US 5
US 6
US 7
US 8
US 9
US 10
US 11
US 12
US 13
US 14
US 15
US 16
US 17
US 18
US 19
US 20
US 21
US 22
US 23
US 24
US 25
US 26
US 27
US 29
US 30
US 31
US 33
US 34
US 35
US 36
US 40
US 41
US 42
US 43
US 44
US 45
US 49
US 50
US 51
US 52
US 53
US 54
US 56
US 58
US 59
US 60
US 61
US 62
US 63
US 64
US 65
US 66
US 67
US 68
US 69
US 70
US 71
US 72
US 73
US 74
US 75
US 76
US 77
US 78
US 79
US 80
US 81
US 82
US 83
US 84
US 85
US 87
US 89
US 90
US 91
US 92
US 93
US 95
US 96
US 97
US 98
US 99
US 101
US 102 – US 199
US 104
US 111
US 112
US 113
US 117
US 119
US 123
US 127
US 129
US 130
US 131
US 136
US 141
US 150
US 151
US 154
US 158
US 160
US 165
US 166
US 167
US 169
US 171
US 175
US 176
US 178
US 180
US 181
US 183
US 189
US 190
US 191
US 195
US 200 – US 299
US 201
US 202
US 206
US 209
US 211
US 212
US 218
US 219
US 220
US 221
US 222
US 223
US 224
US 230
US 231
US 240
US 250
US 258
US 259
US 260
US 264
US 270
US 271
US 275
US 276
US 277
US 278
US 281
US 283
US 285
US 287
US 290
US 300 – US 399
US 301
US 302
US 309
US 311
US 319
US 321
US 322
US 331
US 340
US 341
US 350
US 360
US 377
US 378
US 380
US 385
US 395
US 400 – US 499
US 401
US 411
US 412
US 421
US 422
US 431
US 441
US 460
US 466
US 500 – US 599
US 501
US 521
US 522
US 541
US 550
US 600 – US 699
US 601
US 611
US 641
US 666
US 700 – US 799
US 701
US 730
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