Interstate Highway
Interstate 26 1 Signs
State: Tennessee
Counties: Unicoi County
Places: Unicoi
Auxiliary Route of I-26
Interstate 26 19 Signs
State: North Carolina
Counties: Buncombe County | Madison County
Places: Asheville | Stocksville | Weaverville | Woodfin
Auxiliary Route of I-26
Interstate 10 655 Signs
States: Alabama | Arizona | California | Louisiana | Mississippi | New Mexico | Texas
Auxiliary Routes: I-510 (New Orleans) I-610 (New Orleans) I-110 (El Paso) I-210 (Los Angeles) I-110 (Biloxi)
Business Loops and Spurs: BL-10 (Blythe) BL-10 (Benson) BL-10 (Deming) BL-10 (Bowie) BL-10 (Lordsburg) BL-10 (Sierra Blanca) BL-10 (San Simon) BL-10 (Van Horn) BL-10 (Willcox) BL-10 (Quartzsite)
Interstate 105 (Eugene) 7 Signs
State: Oregon
Counties: Lane County
Places: Eugene | Springfield
Auxiliary Route of I-5
Interstate 11 35 Signs
State: Nevada
Counties: Clark County
Places: Boulder City | Henderson
Interstate 110 (Biloxi) 1 Signs
State: Mississippi
Counties: Harrison County
Places: D'Iberville
Auxiliary Route of I-10Interstate 110 (El Paso) 6 Signs
State: Texas
Counties: El Paso County
Places: El Paso
Auxiliary Route of I-10
Interstate 115 (Butte) 11 Signs
State: Montana
Counties: Silver Bow County
Places: Butte
Auxiliary Route of I-15
Interstate 12 16 Signs
States: Louisiana | Mississippi
Interstate 129 13 Signs
States: Iowa | Nebraska
Auxiliary Route of I-29
Interstate 15 1101 Signs
States: Arizona | California | Idaho | Montana | Nevada | Utah
Auxiliary Routes: I-515 (Las Vegas) I-215 (Salt Lake City) I-115 (Butte) I-215 (San Bernardino) I-215 (Las Vegas)
Business Loops and Spurs: BL-15 (Butte) BL-15 (Dillon) BL-15 (Idaho Falls) BL-15 (Tremonton) BL-15 (Barstow) BL-15 (Mesquite) BL-15 (Nephi) BL-15 (Parowan) BL-15 (Pocatello) BL-15 (St George) BL-15 (Cedar City) BL-15 (Blackfoot) BL-15 (Beaver) BL-15 (Inkom) BL-15 (McCammon) BL-15 (Shelby) BL-15 (Brigham City) BL-15 (Fillmore) BL-15 (Great Falls) BL-15 (Helena)
Interstate 165 (Mobile) 3 Signs
State: Alabama
Counties: Mobile County
Places: Mobile
Auxiliary Route of I-65
Interstate 17 33 Signs
State: Arizona
Counties: Coconino County | Maricopa County
Places: Flagstaff | Morristown | Phoenix
Interstate 176 (Morgantown) 2 Signs
State: Pennsylvania
Counties: Berks County
Places: Morgantown
Auxiliary Route of I-76 (Ohio-New Jersey)
Interstate 180 (Cheyenne) 15 Signs
State: Wyoming
Counties: Laramie County
Places: Cheyenne
Auxiliary Route of I-80
Interstate 182 (Tri Cities) 26 Signs
State: Washington
Counties: Benton County | Franklin County
Places: Benton City | Kennewick | Pasco | Richland | West Richland
Auxiliary Route of I-82
Interstate 184 36 Signs
State: Idaho
Counties: Ada County
Places: BoiseInterstate 184 (Boise) 12 Signs
State: Idaho
Counties: Ada County
Places: Boise
Auxiliary Route of I-84
Interstate 19 50 Signs
State: Arizona
Counties: Pima County | Santa Cruz County
Places: Amado | Green Valley | Nogales | Rio Rico | Sahuarita | Tubac | Tucson
Interstate 195 (Saco) 1 Signs
State: Maine
Counties: York County
Places: Saco
Auxiliary Route of I-95
Interstate 20 1 Signs
State: Georgia
Counties: Fulton County
Places: Atlanta
Interstate 205 (Portland) 95 Signs
States: Oregon | Washington
Auxiliary Route of I-5
Interstate 210 (Los Angeles) 3 Signs
State: California
Counties: Los Angeles County
Places: Los Angeles
Auxiliary Route of I-10
Interstate 215 (Las Vegas) 25 Signs
State: Nevada
Counties: Clark County
Places: Enterprise | Henderson | Las Vegas | Paradise
Auxiliary Route of I-15Interstate 215 (Salt Lake City) 66 Signs
State: Utah
Counties: Davis County | Salt Lake County
Places: Cottonwood Heights | Holladay | Midvale | Murray | North Salt Lake | Salt Lake City | Taylorsville | West Valley City
Auxiliary Route of I-15Interstate 215 (San Bernardino) 17 Signs
State: California
Counties: Riverside County | San Bernardino County
Places: Loma Linda | Riverside | San Bernardino
Auxiliary Route of I-15
Interstate 225 (Denver) 5 Signs
State: Colorado
Counties: Adams County | Denver County
Places: Aurora | Denver
Auxiliary Route of I-25
Interstate 240 (Asheville) 10 Signs
State: North Carolina
Counties: Buncombe County
Places: Asheville | West
Auxiliary Route of I-40
Interstate 25 398 Signs
States: Colorado | New Mexico | Wyoming
Auxiliary Routes: I-225 (Denver)
Business Loops and Spurs: BL-25 (Belen) BL-25 (Casper) BL-25 (Trinidad) BL-25 (Raton) BL-25 (Truth or Consequences) BL-25 (Cheyenne) BL-25 (Chugwater) BL-25 (Douglas) BL-25 (Glenrock) BL-25 (Las Vegas) BL-25 (Wheatland) BL-25 (Aguilar) BL-25 (Buffalo) BL-25 (Walsenburg)
Interstate 26 32 Signs
States: North Carolina | Tennessee
Auxiliary Routes: Alternate I-26 Future I-26
Interstate 270 (Denver) 2 Signs
State: Colorado
Counties: Adams County
Places: Denver
Auxiliary Route of I-70
Interstate 279 (Pittsburgh) 3 Signs
State: Pennsylvania
Counties: Allegheny County
Places: Pittsburgh
Auxiliary Route of I-79
Interstate 280 (San Francisco) 7 Signs
State: California
Counties: San Francisco County | San Mateo County | Santa Clara County
Places: Daly City | San Francisco | San Jose
Auxiliary Route of I-80
Interstate 283 (Harrisburg) 2 Signs
State: Pennsylvania
Counties: Dauphin County | York County
Places: Highspire | New Cumberland
Auxiliary Route of I-83
Interstate 285 (Atlanta) 2 Signs
State: Georgia
Counties: Fulton County
Places: Atlanta
Auxiliary Route of I-85
Interstate 29 37 Signs
States: Iowa | South Dakota
Auxiliary Routes: I-129
Interstate 293 (Manchester) 4 Signs
State: New Hampshire
Counties: Hillsborough County | Merrimack County
Places: Bedford | Concord | Hooksett
Auxiliary Route of I-93
Interstate 295 (Delaware - Pennsylvania) 13 Signs
States: Delaware | New Jersey
Auxiliary Route of I-95Interstate 295 (Maine) 2 Signs
State: Maine
Counties: Cumberland County
Places: Portland
Auxiliary Route of I-95Interstate 295 (Providence) 10 Signs
States: Massachusetts | Rhode Island
Auxiliary Route of I-95Interstate 295 (Washington) 2 Signs
Federal District: District of Columbia
Places: Washington
Auxiliary Route of I-95
Interstate 376 (Pittsburgh) 25 Signs
State: Pennsylvania
Counties: Allegheny County
Places: Carnegie | Clinton | Coraopolis | Monroeville | Pittsburgh | Wilkinsburg
Auxiliary Route of I-76 (Ohio-New Jersey)
Business Loops and Spurs: BL-376 (Allegheny County)
Interstate 381 (Bristol) 1 Signs
State: Virginia
Places: Bristol
Auxiliary Route of I-81
Interstate 393 (Concord) 1 Signs
State: New Hampshire
Counties: Merrimack County
Places: Concord
Auxiliary Route of I-83
Interstate 395 (Bangor) 1 Signs
State: Maine
Counties: Penobscot County
Places: Brewer
Auxiliary Route of I-95Interstate 395 (Washington) 3 Signs
Federal District: District of Columbia
Places: Washington
Auxiliary Route of I-95
Interstate 40 297 Signs
States: Arizona | California | New Mexico | North Carolina | Tennessee
Auxiliary Routes: I-240 (Asheville)
Business Loops and Spurs: BL-40 (Kingman) BL-40 (Needles) BL-40 (Moriarty) BL-40 (Gallup) BL-40 (Milan) BL-40 (Holbrook) BL-40 (Albuquerque) BL-40 (Grants) BL-40 (Flagstaff)
Interstate 405 (Los Angeles) 9 Signs
State: California
Counties: Los Angeles County
Places: Los Angeles
Auxiliary Route of I-5Interstate 405 (Portland) 38 Signs
State: Oregon
Counties: Multnomah County
Places: Portland
Auxiliary Route of I-5Interstate 405 (Seattle) 5 Signs
State: Washington
Counties: King County
Places: Bellevue | SeaTac | Tukwila
Auxiliary Route of I-5
Interstate 470 (Wheeling) 2 Signs
State: West Virginia
Counties: Marshall County | Ohio County
Places: Benwood | Wheeling
Auxiliary Route of I-70
Interstate 476 (Pennsylvania) 3 Signs
State: Pennsylvania
Counties: Chester County | Montgomery County
Places: Conshohocken | Wayne
Auxiliary Route of I-76 (Ohio-New Jersey)
Interstate 495 (Boston) 1 Signs
State: Massachusetts
Counties: Essex County
Places: Newburyport
Auxiliary Route of I-95Interstate 495 (Washington) 1 Signs
State: Maryland
Counties: Prince George's County
Places: Greenbelt
Auxiliary Route of I-95Interstate 495 (Wilmington) 1 Signs
State: Delaware
Counties: New Castle County
Places: New Castle
Auxiliary Route of I-95
Interstate 5 539 Signs
States: California | Oregon | Washington
Auxiliary Routes: I-405 (Los Angeles) I-205 (Portland) I-405 (Portland) I-405 (Seattle) I-505 (California) I-105 (Eugene)
Business Loops and Spurs: BL-5 (Weed) BL-5 (Castle Rock)
Interstate 505 (California) 4 Signs
State: California
Counties: Solano County | Yolo County
Places: Dunnigan | Vacaville
Auxiliary Route of I-5
Interstate 510 (New Orleans) 2 Signs
State: Louisiana
Parishes: Orleans Parish
Places: New Orleans
Auxiliary Route of I-10
Interstate 515 (Las Vegas) 20 Signs
State: Nevada
Counties: Clark County
Places: Henderson | Las Vegas | North Las Vegas
Auxiliary Route of I-15
Interstate 580 (Nevada) 81 Signs
State: Nevada
Counties: Douglas County | Washoe County
Places: Carson City | New Washoe City | Reno | Sparks
Auxiliary Route of I-80Interstate 580 (San Francisco) 13 Signs
State: California
Counties: Alameda County | Contra Costa County | Marin County
Places: Emeryville | Pleasanton | Richmond | San Rafael
Auxiliary Route of I-80
Interstate 59 6 Signs
State: Louisiana
Parishes: St. Tammany Parish
Places: Slidell
Interstate 610 (New Orleans) 7 Signs
State: Louisiana
Parishes: Orleans Parish
Places: New Orleans
Auxiliary Route of I-10
Interstate 64 30 Signs
State: West Virginia
Counties: Greenbrier County | Kanawha County
Places: Caldwell | Charleston | White Sulphur Springs
Interstate 65 5 Signs
State: Alabama
Counties: Baldwin County | Mobile County
Places: Loxley | Mobile | Orange Beach
Auxiliary Routes: I-165 (Mobile)
Interstate 66 7 Signs
State: Virginia
Counties: Arlington County | Fairfax County | Fauquier County
Places: Arlington | Centreville | Delaplane | Idylwood | Marshall | Oakton
Interstate 676 (Philadelphia) 3 Signs
States: New Jersey | Pennsylvania
Auxiliary Route of I-76 (Ohio-New Jersey)
Interstate 68 6 Signs
State: Maryland
Counties: Garrett County
Places: Grantsville
Interstate 680 (San Francisco) 69 Signs
State: California
Counties: Alameda County | Contra Costa County | Santa Clara County | Solano County
Places: Alamo | Benicia | Concord | Danville | Dublin | Fairfield | Fremont | Martinez | Milpitas | Pacheco | Pleasant Hill | Pleasanton | San Jose | San Ramon | Sunol | Walnut Creek
Auxiliary Route of I-80
Interstate 70 320 Signs
States: Colorado | Kansas | Ohio | Pennsylvania | Utah | West Virginia
Auxiliary Routes: I-270 (Denver) I-470 (Wheeling)
Business Loops and Spurs: BL-70 (Grand Junction) BL-70 (Idaho Springs) BL-70 (Limon) BL-70 (Watkins) BL-70 (Denver) BL-70 (Salina) BL-70 (Green River) BL-70 (Richfield)
Interstate 75 5 Signs
State: Georgia
Counties: Fulton County
Places: Atlanta
Interstate 76 91 Signs
States: Colorado | Nebraska | Pennsylvania
Business Loops and Spurs: BL-76 (Fort Morgan) I-76 AlternateInterstate 76 (Ohio-New Jersey) 36 Signs
States: New Jersey | Pennsylvania
Auxiliary Routes: I-476 (Pennsylvania) I-676 (Philadelphia) I-176 (Morgantown) I-376 (Pittsburgh)
Interstate 77 91 Signs
States: Ohio | Virginia | West Virginia
Interstate 780 (San Francisco) 4 Signs
State: California
Counties: Solano County
Places: Benicia | Vallejo
Auxiliary Route of I-80
Interstate 79 25 Signs
States: Pennsylvania | West Virginia
Auxiliary Routes: I-279 (Pittsburgh)
Interstate 8 129 Signs
States: Arizona | California
Business Loops and Spurs: BL-8 (Yuma) BL-8 (Gila Bend)
Interstate 80 1466 Signs
States: California | Nebraska | Nevada | Utah | Wyoming
Auxiliary Routes: I-280 (San Francisco) I-580 (San Francisco) I-880 (San Francisco) I-180 (Cheyenne) I-580 (Nevada) I-780 (San Francisco) I-680 (San Francisco)
Business Loops and Spurs: BL-80 (Evanston) BL-80 (Lovelock) BL-80 (Wendover) BL-80 (Battle Mountain) BL-80 (Bridger Valley) BL-80 (Rock Springs) BL-80 (Fernley) BL-80 (Reno) BL-80 (Cheyenne) BL-80 (Laramie) BL-80 (Elko) BL-80 (Carlin) BL-80 (Rawlins) BL-80 (Verdi) BL-80 (Wells) BL-80 (Green River) BL-80 (Winnemucca) BL-80 (West Wendover) BL-80 (Pine Bluffs) BL-80 (Sacramento)
Interstate 81 40 Signs
States: Maryland | Tennessee | Virginia | West Virginia
Auxiliary Routes: I-381 (Bristol)
Interstate 82 143 Signs
States: Oregon | Washington
Auxiliary Routes: I-182 (Tri Cities)
Interstate 83 2 Signs
State: Pennsylvania
Counties: York County
Places: New Cumberland
Auxiliary Routes: I-283 (Harrisburg) I-393 (Concord)
Interstate 84 1096 Signs
States: Idaho | Oregon | Utah | Washington
Auxiliary Routes: I-184 (Boise)
Business Loops and Spurs: BL-84 (Burley-Heyburn) BL-84 (Hammett) BL-84 (Bliss) BL-84 (Glenns Ferry) BL-84 (Mountain Home) BL-84 (Nampa Caldwell) BL-84 (Tremonton) BL-84 (Brigham City)
Interstate 85 7 Signs
State: Georgia
Counties: Fulton County
Places: Atlanta
Auxiliary Routes: I-985 (Atlanta) I-285 (Atlanta)
Interstate 86 103 Signs
State: Idaho
Counties: Bannock County | Cassia County | Minidoka County | Power County
Places: American Falls | Arbon Valley | Chubbuck | Cotterel | Declo | Neeley | Pocatello | Raft River | Rupert
Business Loops and Spurs: BL-86 (American Falls)
Interstate 880 (San Francisco) 1 Signs
State: California
Counties: Alameda County
Places: Emeryville
Auxiliary Route of I-80
Interstate 89 4 Signs
State: New Hampshire
Counties: Merrimack County
Places: Bow | Concord
Interstate 90 763 Signs
States: Idaho | Massachusetts | Minnesota | Montana | South Dakota | Washington | Wyoming
Business Loops and Spurs: BL-90 (Big Timber) BL-90 (Deer Lodge) BL-90 (Sheridan) BL-90 (Sundance) BL-90 (Worthington) BL-90 (Gillette) BL-90 (Moorcroft) BL-90 (Spearfish) BL-90 (Buffalo) BL-90 (Bozeman) BL-90 (Butte) BL-90 (Livingston) BL-90 (Missoula) BL-90 (Billings) BL-90 (Hardin) BL-90 (Laurel) BL-90 (Spokane) BL-90 (Sturgis) BL-90 (Osburn) BL-90 (Alberton) BL-90 (Mullan) BL-90 (Post Falls) BL-90 (Wall) BL-90 (Wallace)
Interstate 91 5 Signs
State: Vermont
Counties: Caledonia County
Places: Saint Johnsbury
Interstate 93 14 Signs
States: Massachusetts | New Hampshire | Vermont
Auxiliary Routes: I-293 (Manchester)
Interstate 94 116 Signs
States: Montana | North Dakota
Business Loops and Spurs: BL-94 (Miles City) BL-94 (Glendive)
Interstate 95 40 Signs
States: Delaware | Maine | Maryland | Massachusetts | New Hampshire | Pennsylvania | Rhode Island | Virginia
Auxiliary Routes: I-195 (Saco) I-395 (Bangor) I-495 (Boston) I-495 (Wilmington) I-295 (Washington) I-395 (Washington) I-495 (Washington) I-295 (Providence) I-295 (Delaware - Pennsylvania) I-295 (Maine)
Interstate 985 (Atlanta) 4 Signs
State: Georgia
Counties: Hall County
Places: Buford | Gainesville
Auxiliary Route of I-85