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.
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

Bus. US 1 - Florida City to Homestead, FloridaAlt. US 1 - Daytona Beach to St. Augustine, Florida

US 2

US 3

Alt. US 3Tyngsborough, Massachusetts to Concord, New HampshireBus. US 3Tyngsborough, Massachusetts to Concord, New HampshireByp. US 3Concord, New HampshireByp. US 3Nashua, New Hampshire

US 4

Alt. US 4Fair Haven to West Rutland, Vermont

US 5

Alt. US 5 (1933–1941)New Haven to North Haven, ConnecticutAlt. US 5 (1941–1966)New Haven to North Haven, ConnecticutAlt. US 5 – New Haven to Meriden, ConnecticutAlt. US 5 (1937–1941)Lamentation Mountain State Park to Tracy, ConnecticutAlt. US 5 (1940s–1950s)Lamentation Mountain State Park to Tracy, ConnecticutAlt. US 5Berlin, ConnecticutAlt. US 5East Hartford to East Windsorhill, ConnecticutUS 5AHartfordWindsor, Connecticut city line to Agawam, MassachusettsByp. US 5South Deerfield, Massachusetts

US 6

US 7

US 8

Bus. US 8Rhinelander, Wisconsin

US 9

US 10

Alt. US 10Seattle, WashingtonAlt. US 10Seattle, Washington to Missoula, MontanaBus. US 10Coeur d'Alene, IdahoAlt. US 10Drummond to Opportunity, MontanaByp. US 10Butte, MontanaByp. US 10SButte, MontanaByp. US 10Billings, MontanaBus. US 10Valley City, North Dakota

US 11

Bus. US 11Meridian, MississippiByp. US 11Tuscaloosa, Alabama

US 12

US 13

US 14

US 15

Alt. US 15/US 15AWalterboro, South Carolina to Creedmoor, North Carolina

US 16

US 17

US 18

US 19

Alt. US 19Bayonet Point to Brooksville, Florida

US 20

US 21

US 22

Temp. US 22 - Green Tree to Pittsburgh, PennsylvaniaTruck US 22 - Pittsburgh, Pennsylvania

US 23

US 24

Bus. US 24Manitou Springs to Colorado Springs, Colorado

US 25

US 26

US 27

Alt. US 27 - Sebring to Avon Park, FloridaTemp. US 27 - Sebring to Leesburg, FloridaAlt. US 27 - Lady Lake to Belleview, FloridaAlt. US 27 - Haines City to Sunray Deli Estates, Florida

US 29

US 30

US 31

Bus. US 31 - Montgomery, AlabamaCity US 31 - Montgomery, AlabamaTruck US 31 - Montgomery, Alabama

US 33

US 34

US 35

US 36

Bus US 36St. Joseph, Missouri

US 40

Bus. US 40 - Oakland to Berkeley, CaliforniaTemp. US 40 - American Canyon to Cordelia, California[U.S. Route 40 Business (West Sacramento, California|Sacramento, California)|Bus. US 40] - West Sacramento, CaliforniaBus. US 40 - North Sacramento, CaliforniaAlt. US 40 - Davis, California to Reno, NevadaAlt. US 40 - Salt Lake City, UtahAlt. US 40 - Park City, UtahTemp. US 40 - Steamboat Springs to Kremmling, Colorado

US 41

Temp. US 41 - Naples Manor to Naples Park, Florida

US 42

Alt. US 42Cincinnati to Sharonville, OhioBus. US 42Covington, Kentucky

US 43

Alt. US 43Mobile to Chickasaw, AlabamaBus. US 43Tuscumbia, Alabama

US 44

US 44AManchester to West Ashford, Connecticut

US 45

US 49

Bus. US 49Hattiesburg, Mississippi

US 50

Bus. US 50 - Oakland, CaliforniaBus. US 50 - Sacramento, California

US 51

US 52

US 53

US 54

US 56

Temp. US 56 - Boise City, Oklahoma to Elkhart, Kansas

US 58

US 59

US 60

Bus. US 60Riverside, CaliforniaBus. US 60Banning, CaliforniaBus. US 60Superior, ArizonaTemp. US 60Globe to Springerville, ArizonaTruck US 60Globe, Arizona

US 61

US 62

US 63

US 63S - Moro Bay, Arkansas

US 64

US 65

Byp. US 65Baton Rouge, Louisiana

''US 66''

Alt. US 66 - Los Angeles to Pasadena, CaliforniaBus. US 66 - San Bernardino, CaliforniaCity US 66 - San Bernardino, CaliforniaBus. US 66 - Flagstaff, ArizonaBus. US 66 - Amarillo, TexasCity US 66 - Amarillo, TexasBus. US 66 - Clinton, OklahomaCity US 66 - Clinton, OklahomaAlt. US 66 - Oklahoma City, OklahomaBus. US 66 - Oklahoma City, OklahomaCity US 66 - Oklahoma City, OklahomaBus. US 66 - Tulsa, OklahomaByp. US 66 - Tulsa, OklahomaAlt. US 66 - Joplin, MissouriBus. US 66 - Joplin, MissouriByp. US 66 - Joplin, MissouriAlt. US 66 - Joplin to Webb City, MissouriBus. US 66 - Webb City to Carterville, MissouriAlt. US 66 - Carthage to Kendricktown, MissouriBus. US 66 - Carthage, MissouriAlt. Bus. US 66 - Springfield, MissouriBus. US 66 - Springfield, MissouriByp. US 66 - Springfield, MissouriCity US 66 - Springfield, MissouriBus. US 66 - Lebanon, MissouriBus. US 66 - Waynesville, MissouriSpur US 66 - Fort Leonard Wood, MissouriBus. US 66 - Rolla, MissouriCity US 66 - Rolla, MissouriBus. US 66 - Pacific, MissouriBus. US 66 - St. Louis to Sunset Hills, MissouriByp. US 66 - St. Louis to Sunset Hills, MissouriOpt. US 66 - St. Louis, Missouri to Venice, IllinoisCity US 66 - St. Louis, Missouri to Mitchell, IllinoisCity US 66 - Kirkwood to Bellefontaine Neighbors, MissouriBus. US 66 - East St. Louis to Mitchell, IllinoisTemp. US 66 - Livingston to Springfield, IllinoisBus. US 66 - Springfield, IllinoisCity US 66 - Springfield, IllinoisBus. US 66 - Lincoln, IllinoisCity US 66 - Lincoln, IllinoisBus. US 66 - Bloomington, IllinoisCity US 66 - Bloomington, IllinoisAlt. US 66 - Gardner to Bolingbrook, IllinoisAlt. US 66 - Joliet, Illinois

US 67

US 68

US 69

US 70

Bus. US 70 - Pomona, CaliforniaBus. US 70 - Banning, CaliforniaBus. US 70 - Superior, Arizona

US 71

Bus. US 71Alexandria, Louisiana

US 72

Bus. US 72Tuscumbia, Alabama

US 73

Alt. US 73Kansas City, Kansas

US 74

US 75

Temp. US 75 - Galveston to Houston, TexasBus. US 75 - Houston, TexasBus. US 75 - Sherman to Denison, Texas

US 76

Bus. US 76Dalton, Georgia

US 77

US 78

Bus. US 78Red Banks, MississippiBus. US 78Hickory Flat, MississippiAlt. US 78Hamilton to Graysville, AlabamaAlt. US 78Carbon Hill to Jasper, AlabamaAlt. US 78 – Birmingham to Irondale, AlabamaTruck US 78Birmingham, Alabama

US 79

Bus. US 79-AAustin, TexasBus. US 79-BTaylor, Texas

US 80

Bus. US 80 - San Diego, CaliforniaBus. US 80 - Winterhaven, California to Yuma, ArizonaAlt. US 80 - Phoenix, ArizonaAlt. US 80 - Phoenix, ArizonaByp. US 80 - Phoenix, ArizonaBus. US 80 - Tucson, ArizonaTruck US 80 - Tombstone, ArizonaTemp. US 80 - Sierra Vista to Bisbee, ArizonaAlt. US 80 - Las Cruces to Anthony, New MexicoAlt. US 80 - El Paso, TexasBus. US 80 - El Paso, TexasBus. US 80 - Sierra Blanca, TexasBus. US 80 - Van Horn, TexasBus. US 80 - Odessa to Midland, TexasBus. US 80 - Big Spring, TexasBus. US 80 - Colorado City, TexasBus. US 80 - Sweetwater, TexasAlt. US 80 - Abilene to Weatherford, TexasBus. US 80 - Abilene, TexasBus. US 80 - Fort Worth, TexasBus. US 80 - Dallas, Texas

US 81

Bus. US 81 - Lytle, TexasBus. US 81 - San Antonio, Texas Bus. US 81 - Austin, TexasBus. US 81 - Waco, TexasAlt. US 81 - Fort Worth, TexasBus. US 81 - Fort Worth, Texas

US 82

US 83

US 84

US 85

Bus. US 85El Paso, TexasAlt. US 85Anthony to Las Cruces, New MexicoByp. US 85Santa Fe, New MexicoAlt. US 85Barelas to Alameda, New MexicoByp. US 85Fountain to Colorado Springs, Colorado

US 87

US 89

Bus. US 89Florence, ArizonaUS 89APrescott, ArizonaUS 89A – Prescott to Flagstaff, ArizonaSpur US 89APrescott, ArizonaTemp. US 89 – Prescott, ArizonaTruck US 89 – Prescott, Arizona

US 90

US 91

Bus. US 91Corona to Riverside, CaliforniaBus. US 91Colton to San Bernardino, CaliforniaBus. US 91Victorville, CaliforniaAlt. US 91Jean to Las Vegas, NevadaAlt. US 91Salt Lake City, UtahAlt. US 91North Salt Lake to Farmington, UtahAlt. US 91North Salt Lake to Ogden, Utah

US 92

Bus. US 92 - Lakeland, Florida

US 93

US 95

Truck US 95 - San Luis, Arizona

US 96

US 97

US 98

Bus. US 98Natchez, Mississippi

''US 99''

Bus. US 99Banning, CaliforniaBus. US 99Pomona, CaliforniaBus. US 99Elysian Park to Sylmar, CaliforniaBus. US 99Fresno, CaliforniaBus. US 99Merced, CaliforniaBus. US 99Atwater, CaliforniaAlt. US 99Sacramento to Red Bluff, CaliforniaBus. US 99Sacramento, CaliforniaBus. US 99Gold Hill, OregonBus. US 99Green, OregonBus. US 99Roseburg, OregonAlt. US 99Junction City to Portland, OregonBus. US 99Salem, OregonByp. US 99Salem, OregonUS 99TTukwila, WashingtonAlt. US 99 – Riverton Heights to Seattle, WashingtonAlt. US 99Georgetown to Seattle, WashingtonBus. US 99 – SeattleByp. US 99 – SeattleAlt. US 99 – Fairmont to Everett, WashingtonAlt. US 99Burlington to Bellingham, WashingtonAlt. US 99Bellingham, Washington to the Canada–US border

US 101

Bus. US 101Chula Vista to National City, CaliforniaBus. US 101San DiegoAlt. US 101Capistrano Beach to Oxnard, CaliforniaBus. US 101Buena Park, CaliforniaBus. US 101Anaheim, CaliforniaAlt. US 101Long Beach, CaliforniaBus. US 101Los AngelesByp. US 101 – Anaheim to Los Angeles, CaliforniaAlt. US 101Santa Monica, CaliforniaBus. US 101Universal City to Woodland Hills, California

US 102 – US 199

''US 104''

Alt. US 104Niagara Falls, New York

''US 111''

Alt. US 111Parkton, Maryland to York, Pennsylvania

''US 112''

US 112SRolling Prairie, Indiana to Union, MichiganBus. US 112Niles, MichiganBus. US 112Ypsilanti, MichiganByp. US 112Ypsilanti, Michigan

US 113

US 117

US 119

US 123

Bus. US 123Seneca, South CarolinaBus. US 123Easley, South Carolina

US 127

US 129

Alt. US 129 - Old Town to Branford, FloridaTemp. US 129 - Branford to Live Oak, Florida

US 130

Alt. US 130New Brunswick, New Jersey Alt. US 130Bridgeport to Thorofare, New Jersey

US 131

US 136

US 141

Bus. US 141Sheboygan, WisconsinBus. US 141Manitowoc, Wisconsin

US 150

Bus. US 150 - Peoria, IllinoisCity US 150 - Peoria, IllinoisBus. US 150 - Champaign, IllinoisTemp. US 150 - Ogden to Paris, Illinois

US 151

''US 154''

Spur US 154 - Dodge City, Kansas

US 158

Bus. US 158Winston-Salem, North CarolinaUS 158AOxford, North Carolina

US 160

US 165

US 166

US 167

US 169

Temp. US 169Tulsa, Oklahoma

US 171

US 175

Bus. US 175Crandall, Texas

US 176

Alt. US 176Inman, South CarolinaAlt. US 176Spartanburg, South Carolina

US 178

US 180

Alt. US 180Hunt to St. Johns, ArizonaBus. US 180Eagar, ArizonaBus. US 180El Paso, TexasBus. US 180Fort Worth, Texas

US 181

US 183

US 189

Alt. US 189Hailstone to Wanship, Utah

US 190

US 191

US 195

US 200 – US 299

US 201

US 202

Truck US 202Norristown, Pennsylvania

US 206

US 209

US 211

US 212

Byp. US 212 - Billings, Montana

US 218

US 219

US 220

Bus. US 220 - Ellerbe, North Carolina

US 221

US 222

US 223

US 224

''US 230''

Byp. US 230Harrisburg to Highspire, Pennsylvania

US 231

''US 240''

Alt. US 240 – Washington, D.C.Alt. US 240 – Washington, D.C. to Bethesda, Maryland

US 250

US 258

US 259

''US 260''

Alt. US 260Springerville to Eagar, Arizona

US 264

US 270

US 271

US 275

City US 275Omaha, NebraskaAlt. US 275Waterloo to Fremont, Nebraska

US 276

US 277

US 278

US 281

Temp. US 281Brownsville to Pharr, Texas

US 283

US 285

Alt. US 285Artesia to South Springs Acres, New Mexico