Interstate Highway

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  Alternate I-26 1 Signs
  State: Tennessee
  Counties: Unicoi County
  Places: Unicoi

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  Future I-26 19 Signs
  State: North Carolina
  Counties: Buncombe County | Madison County
  Places: Asheville | Stocksville | Weaverville | Woodfin

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  I-10 655 Signs
  States: Alabama | Arizona | California | Louisiana | Mississippi | New Mexico | Texas

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  I-105 (Eugene) 7 Signs
  State: Oregon
  Counties: Lane County
  Places: Eugene | Springfield

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  I-11 35 Signs
  State: Nevada
  Counties: Clark County
  Places: Boulder City | Henderson

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  I-110 (Biloxi) 1 Signs
  State: Mississippi
  Counties: Harrison County
  Places: D'Iberville

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  I-110 (El Paso) 6 Signs
  State: Texas
  Counties: El Paso County
  Places: El Paso

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  I-115 3 Signs
  State: Montana
  Counties: Silver Bow County
  Places: Butte

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  I-115 (Butte) 3 Signs
  State: Montana
  Counties: Silver Bow County
  Places: Butte

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  I-12 16 Signs
  States: Louisiana | Mississippi

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  I-129 13 Signs
  States: Iowa | Nebraska

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  I-15 1069 Signs
  States: Arizona | California | Idaho | Montana | Nevada | Utah

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  I-165 (Mobile) 3 Signs
  State: Alabama
  Counties: Mobile County
  Places: Mobile

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  I-17 33 Signs
  State: Arizona
  Counties: Coconino County | Maricopa County
  Places: Flagstaff | Morristown | Phoenix

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  I-176 (Morgantown) 2 Signs
  State: Pennsylvania
  Counties: Berks County
  Places: Morgantown

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  I-180 (Cheyenne) 15 Signs
  State: Wyoming
  Counties: Laramie County
  Places: Cheyenne

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  I-182 (Tri Cities) 26 Signs
  State: Washington
  Counties: Benton County | Franklin County
  Places: Benton City | Kennewick | Pasco | Richland | West Richland

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  I-184 34 Signs
  State: Idaho
  Counties: Ada County
  Places: Boise

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  I-184 (Boise) 12 Signs
  State: Idaho
  Counties: Ada County
  Places: Boise

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  I-19 50 Signs
  State: Arizona
  Counties: Pima County | Santa Cruz County
  Places: Amado | Green Valley | Nogales | Rio Rico | Sahuarita | Tubac | Tucson

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  I-195 (Saco) 1 Signs
  State: Maine
  Counties: York County
  Places: Saco

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  I-20 1 Signs
  State: Georgia
  Counties: Fulton County
  Places: Atlanta

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  I-205 (Portland) 95 Signs
  States: Oregon | Washington

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  I-210 (Los Angeles) 3 Signs
  State: California
  Counties: Los Angeles County
  Places: Los Angeles

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  I-215 (Las Vegas) 25 Signs
  State: Nevada
  Counties: Clark County
  Places: Enterprise | Henderson | Las Vegas | Paradise

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  I-215 (Salt Lake City) 65 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

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  I-215 (San Bernardino) 17 Signs
  State: California
  Counties: Riverside County | San Bernardino County
  Places: Loma Linda | Riverside | San Bernardino

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  I-225 (Denver) 5 Signs
  State: Colorado
  Counties: Adams County | Denver County
  Places: Aurora | Denver

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  I-240 (Asheville) 10 Signs
  State: North Carolina
  Counties: Buncombe County
  Places: Asheville | West

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  I-25 389 Signs
  States: Colorado | New Mexico | Wyoming

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  I-26 32 Signs
  States: North Carolina | Tennessee

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  I-270 (Denver) 2 Signs
  State: Colorado
  Counties: Adams County
  Places: Denver

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  I-279 (Pittsburgh) 3 Signs
  State: Pennsylvania
  Counties: Allegheny County
  Places: Pittsburgh

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  I-280 (San Francisco) 7 Signs
  State: California
  Counties: San Francisco County | San Mateo County | Santa Clara County
  Places: Daly City | San Francisco | San Jose

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  I-283 (Harrisburg) 2 Signs
  State: Pennsylvania
  Counties: Dauphin County | York County
  Places: Highspire | New Cumberland

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  I-285 (Atlanta) 2 Signs
  State: Georgia
  Counties: Fulton County
  Places: Atlanta

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  I-29 37 Signs
  States: Iowa | South Dakota

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  I-293 (Manchester) 4 Signs
  State: New Hampshire
  Counties: Hillsborough County | Merrimack County
  Places: Bedford | Concord | Hooksett

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  I-295 (Delaware - Pennsylvania) 13 Signs
  States: Delaware | New Jersey

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  I-295 (Maine) 2 Signs
  State: Maine
  Counties: Cumberland County
  Places: Portland

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  I-295 (Providence) 10 Signs
  States: Massachusetts | Rhode Island

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  I-295 (Washington) 2 Signs
  Federal District: District of Columbia
  Places: Washington

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  I-376 (Pittsburgh) 25 Signs
  State: Pennsylvania
  Counties: Allegheny County
  Places: Carnegie | Clinton | Coraopolis | Monroeville | Pittsburgh | Wilkinsburg

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  I-381 (Bristol) 1 Signs
  State: Virginia
  Places: Bristol

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  I-393 (Concord) 1 Signs
  State: New Hampshire
  Counties: Merrimack County
  Places: Concord

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  I-395 (Bangor) 1 Signs
  State: Maine
  Counties: Penobscot County
  Places: Brewer

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  I-395 (Washington) 3 Signs
  Federal District: District of Columbia
  Places: Washington

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  I-40 297 Signs
  States: Arizona | California | New Mexico | North Carolina | Tennessee

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  I-405 (Los Angeles) 9 Signs
  State: California
  Counties: Los Angeles County
  Places: Los Angeles

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  I-405 (Portland) 38 Signs
  State: Oregon
  Counties: Multnomah County
  Places: Portland

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  I-405 (Seattle) 4 Signs
  State: Washington
  Counties: King County
  Places: Bellevue | Tukwila

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  I-470 (Wheeling) 2 Signs
  State: West Virginia
  Counties: Marshall County | Ohio County
  Places: Benwood | Wheeling

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  I-476 (Pennsylvania) 3 Signs
  State: Pennsylvania
  Counties: Chester County | Montgomery County
  Places: Conshohocken | Wayne

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  I-495 (Boston) 1 Signs
  State: Massachusetts
  Counties: Essex County
  Places: Newburyport

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  I-495 (Washington) 1 Signs
  State: Maryland
  Counties: Prince George's County
  Places: Greenbelt

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  I-495 (Wilmington) 1 Signs
  State: Delaware
  Counties: New Castle County
  Places: New Castle

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  I-5 538 Signs
  States: California | Oregon | Washington

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  I-505 (California) 4 Signs
  State: California
  Counties: Solano County | Yolo County
  Places: Dunnigan | Vacaville

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  I-510 (New Orleans) 2 Signs
  State: Louisiana
  Parishes: Orleans Parish
  Places: New Orleans

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  I-515 (Las Vegas) 20 Signs
  State: Nevada
  Counties: Clark County
  Places: Henderson | Las Vegas | North Las Vegas

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  I-580 (Nevada) 81 Signs
  State: Nevada
  Counties: Douglas County | Washoe County
  Places: Carson City | New Washoe City | Reno | Sparks

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  I-580 (San Francisco) 13 Signs
  State: California
  Counties: Alameda County | Contra Costa County | Marin County
  Places: Emeryville | Pleasanton | Richmond | San Rafael

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  I-59 6 Signs
  State: Louisiana
  Parishes: St. Tammany Parish
  Places: Slidell

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  I-610 (New Orleans) 7 Signs
  State: Louisiana
  Parishes: Orleans Parish
  Places: New Orleans

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  I-64 30 Signs
  State: West Virginia
  Counties: Greenbrier County | Kanawha County
  Places: Caldwell | Charleston | White Sulphur Springs

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  I-65 5 Signs
  State: Alabama
  Counties: Baldwin County | Mobile County
  Places: Loxley | Mobile | Orange Beach

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  I-66 7 Signs
  State: Virginia
  Counties: Arlington County | Fairfax County | Fauquier County
  Places: Arlington | Centreville | Delaplane | Idylwood | Marshall | Oakton

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  I-676 (Philadelphia) 3 Signs
  States: New Jersey | Pennsylvania

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  I-68 6 Signs
  State: Maryland
  Counties: Garrett County
  Places: Grantsville

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  I-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

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  I-70 320 Signs
  States: Colorado | Kansas | Ohio | Pennsylvania | Utah | West Virginia

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  I-75 5 Signs
  State: Georgia
  Counties: Fulton County
  Places: Atlanta

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  I-76 91 Signs
  States: Colorado | Nebraska | Pennsylvania

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  I-76 (Ohio-New Jersey) 36 Signs
  States: New Jersey | Pennsylvania

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  I-77 91 Signs
  States: Ohio | Virginia | West Virginia

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  I-780 (San Francisco) 4 Signs
  State: California
  Counties: Solano County
  Places: Benicia | Vallejo

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  I-79 25 Signs
  States: Pennsylvania | West Virginia

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  I-8 129 Signs
  States: Arizona | California

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  I-80 1441 Signs
  States: California | Nebraska | Nevada | Utah | Wyoming

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  I-81 40 Signs
  States: Maryland | Tennessee | Virginia | West Virginia

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  I-82 143 Signs
  States: Oregon | Washington

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  I-83 2 Signs
  State: Pennsylvania
  Counties: York County
  Places: New Cumberland

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  I-84 1070 Signs
  States: Idaho | Oregon | Utah | Washington

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  I-85 7 Signs
  State: Georgia
  Counties: Fulton County
  Places: Atlanta

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  I-86 99 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

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  I-880 (San Francisco) 1 Signs
  State: California
  Counties: Alameda County
  Places: Emeryville

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  I-89 4 Signs
  State: New Hampshire
  Counties: Merrimack County
  Places: Bow | Concord

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  I-90 665 Signs
  States: Idaho | Massachusetts | Minnesota | Montana | South Dakota | Washington | Wyoming

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  I-91 5 Signs
  State: Vermont
  Counties: Caledonia County
  Places: Saint Johnsbury

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  I-93 14 Signs
  States: Massachusetts | New Hampshire | Vermont

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  I-94 104 Signs
  States: Montana | North Dakota

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  I-95 40 Signs
  States: Delaware | Maine | Maryland | Massachusetts | New Hampshire | Pennsylvania | Rhode Island | Virginia

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  I-985 (Atlanta) 4 Signs
  State: Georgia
  Counties: Hall County
  Places: Buford | Gainesville