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United States Numbered Highway System
Types of special routes in the U.S.
Highway names
US HighwaysU.S. Highway nn (US nn)
U.S. Route nn (US nn)
Special routes
  • Alternate U.S. Route nn (Alt. US nn)
  • Business U.S. Route nn (Bus. US nn)
  • Bypass U.S. Route nn (Byp. US nn)
  • Connector U.S. Route nn (Conn. US nn)
  • Scenic U.S. Route nn (Scenic US nn)
  • Spur U.S. Route nn (Spur US nn)
  • Temporary U.S. Route nn (Temp. US nn)
  • Truck U.S. Route nn (Truck US nn)
System links

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.

This transport-related list is incomplete; you can help by adding missing items. (August 2008)

The following U.S. Highway special routes have existed:

US 1 – US 101

US 1

Main article: Special routes of U.S. Route 1

US 2

Main article: Special routes of U.S. Route 2

US 3

Main article: Special routes of U.S. Route 3

US 4

Main article: Special routes of U.S. Route 4

US 5

Main article: Special routes of U.S. Route 5

US 6

Main article: Special routes of U.S. Route 6

US 7

US 8

US 9

Main article: Special routes of U.S. Route 9

US 10

See also: Business routes of U.S. Route 10 in Michigan

US 11

Main article: Special routes of U.S. Route 11

US 12

Main article: Business routes of U.S. Route 12 in Wisconsin

US 13

Main article: Special routes of U.S. Route 13

US 14

Main article: Special routes of U.S. Route 14

US 15

Main article: Special routes of U.S. Route 15

US 16

Main article: Special routes of U.S. Route 16

US 17

Main article: Special routes of U.S. Route 17

US 18

Main article: Special routes of U.S. Route 18

US 19

Main article: Special routes of U.S. Route 19

US 20

Main article: Special routes of U.S. Route 20

US 21

Main article: Special routes of U.S. Route 21

US 22

Main article: Special routes of U.S. Route 22

US 23

Main articles: Special routes of U.S. Route 23 and Business routes of U.S. Route 23 in Michigan

US 24

US 25

Main article: Special routes of U.S. Route 25

US 26

US 27

Main article: Special routes of U.S. Route 27

US 29

Main article: Special routes of U.S. Route 29

US 30

Main article: Special routes of U.S. Route 30

US 31

Main articles: Special routes of U.S. Route 31 and Business routes of U.S. Route 31 in Michigan

US 33

US 34

Main article: Special routes of U.S. Route 34

US 35

US 36

Main article: Special routes of U.S. Route 36 in Missouri

US 40

Main article: Special routes of U.S. Route 40

US 41

Main articles: Special routes of U.S. Route 41 and Business routes of U.S. Route 41 in Wisconsin

US 42

US 43

US 44

US 45

US 49

Main article: Special routes of U.S. Route 49

US 50

Main article: Special routes of U.S. Route 50

US 51

US 52

Main article: Special routes of U.S. Route 52

US 53

US 54

Main article: Special routes of U.S. Route 54

US 56

US 58

Main article: Special routes of U.S. Route 58

US 59

US 60

Main article: Special routes of U.S. Route 60

US 61

Main article: Special routes of U.S. Route 61

US 62

Main article: Special routes of U.S. Route 62

US 63

Main article: Special routes of U.S. Route 63

US 64

Main article: Special routes of U.S. Route 64

US 65

Main article: Special routes of U.S. Route 65

US 66

Main article: Special routes of U.S. Route 66

US 67

Main article: Special routes of U.S. Route 67

US 68

Main article: Special routes of U.S. Route 68

US 69

US 70

Main article: Special routes of U.S. Route 70

US 71

Main article: Special routes of U.S. Route 71

US 72

US 73

US 74

Main article: Special routes of U.S. Route 74

US 75

Main article: Special routes of U.S. Route 75

US 76

US 77

US 78

Main article: Special routes of U.S. Route 78

US 79

Main article: Special routes of U.S. Route 79

US 80

Main article: Special routes of U.S. Route 80

US 81

Main article: Special routes of U.S. Route 81

US 82

Main article: Special routes of U.S. Route 82

US 83

Main article: Business routes of U.S. Route 83 in Texas

US 84

Main article: Special routes of U.S. Route 84

US 85

Main article: Special routes of U.S. Route 85

US 87

Main article: Special routes of U.S. Route 87 in Texas

US 89

US 90

Main article: Special routes of U.S. Route 90

US 91

US 92

Main article: Special routes of U.S. Route 92

US 93

US 95

Main article: Special routes of U.S. Route 95

US 96

US 97

US 98

Main article: Special routes of U.S. Route 98

US 99

Main article: Special routes of U.S. Route 99

US 101

Main article: Special routes of U.S. Route 101

US 102 – US 199

US 104

US 111

US 112

US 113

US 117

US 119

US 123

US 127

Main articles: Special routes of U.S. Route 127, Special routes of U.S. Route 127 in Kentucky, and Business routes of U.S. Route 127 in Michigan

US 129

Main article: Special routes of U.S. Route 129

US 130

US 131

Main article: Business routes of U.S. Route 131

US 136

US 141

US 150

US 151

Main article: Special routes of U.S. Route 151

US 154

US 158

US 160

Main article: Special routes of U.S. Route 160

US 165

US 166

US 167

US 169

Main article: Special routes of U.S. Route 169

US 171

US 175

Main article: Business routes of U.S. Route 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

Main article: Special routes of U.S. Route 202

US 206

US 209

US 211

US 212

US 218

Main article: Special routes of U.S. Route 218

US 219

Main article: Special routes of U.S. Route 219

US 220

Main article: Special routes of U.S. Route 220

US 221

Main article: Special routes of U.S. Route 221

US 222

US 223

US 224

US 230

US 231

Main article: Special routes of U.S. Route 231

US 240

US 250

US 258

US 259

US 260

US 264

US 270

US 271

Main article: Special routes of U.S. Route 271

US 275

US 276

US 277

US 278

Main article: Special routes of U.S. Route 278

US 281

US 283

US 285

US 287

Main article: Business routes of U.S. Route 287 in Texas

US 290

US 300 – US 399

US 301

Main article: Special routes of U.S. Route 301

US 302

US 309

US 311

US 319

US 321

US 322

Main article: Special routes of U.S. Route 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

Main article: Special routes of U.S. Route 401

US 411

US 412

Main article: Special routes of U.S. Route 412

US 421

Main article: Special routes of U.S. Route 421

US 422

Main article: Special routes of U.S. Route 422

US 431

Main article: Special routes of U.S. Route 431

US 441

Main article: Special routes of U.S. Route 441

US 460

Main article: Special routes of U.S. Route 460

US 466

US 500 – US 599

US 501

Main article: Special routes of U.S. Route 501

US 521

Main article: Special routes of U.S. Route 521

US 522

US 541

US 550

US 600 – US 699

US 601

Main article: Special routes of U.S. Route 601

US 611

US 641

US 666

US 700 – US 799

US 701

Main article: Special routes of U.S. Route 701

US 730

See also