List of special routes of the United States Numbered Highway System

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United States Numbered Highway System
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.

  • Alternate routes exist where an additional road is needed to meet traffic demands. They are to be of equal character and quality compared to the main road.
  • Business routes carry traffic through the central business district of a community while the main highway goes around the community.
  • Bypasses serve the opposite purpose of business routes. Truck routes are a subset of bypasses.
  • Temporary routes complete a gap between two segments of main highway that exists because the main highway has not been fully constructed.

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:

  • Routes are sorted by position along the main route, from south to north and west to east.
  • Defunct routes are listed in italics.

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

See also


External links

  • "Alternate U S Highways: Bannered Routes". US-highways.com. August 31, 2005. Archived from the original on September 29, 2015.