List of business routes of the Interstate Highway System
Business Spur and Business Loop shields
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The Interstate Highway System of the United States, in addition to being a network of freeways, also includes a number of Business Routes assigned by the American Association of State Highway and Transportation Officials. The routes are signed with green shields resembling the Interstate Highway shield. The word BUSINESS is used instead of INTERSTATE, and, above the number, where the state name is sometimes included, the word LOOP or SPUR appears. A business loop has both ends as its "parent", while a business spur has a "dangling end", sometimes running from the end of the Interstate to the downtown area.
As the main purpose of a Business Interstate is to serve a downtown area, it is typically routed on surface roads. Thus Business Interstates do not meet Interstate Highway standards. AASHTO does, however, apply similar standards as to new U.S. Routes, requiring a new Business Interstate to meet certain design standards. [1] Business Interstates are also sometimes routed onto freeways that were once designated as mainline Interstates themselves (such as Interstate 40 Business in Winston-Salem, North Carolina and Interstate 80 Business in Sacramento, California).
Unlike 3-digit Interstate spurs, business Interstates can be repeated in the same state.
List of Business Routes
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This transport-related list is incomplete; you can help by expanding it.
Route |
Cities |
Status |
|
Business Loop |
San Ysidro, National City and San Diego, California |
removed |
Business Loop |
San Diego, California |
removed |
Business Loop |
Solana Beach, California |
removed |
Business Loop |
San Clemente, California |
removed |
Business Loop |
Los Angeles, California |
removed |
Business Loop |
Woodland, California |
existing |
Business Loop |
Arbuckle, California |
existing |
Business Loop |
Williams and Maxwell, California |
existing |
Business Loop |
Willows and Orland, California |
existing |
Business Loop |
Red Bluff, California |
existing |
Business Loop |
Cottonwood, California |
removed |
Business Loop |
Anderson and Redding, California |
removed |
Business Loop |
Dunsmuir, California |
existing |
Business Loop |
Mount Shasta, California |
existing |
Business Loop |
Weed, California |
existing |
Business Loop |
Gazelle, California |
existing |
Business Loop |
Yreka, California |
existing |
Business Loop |
Vancouver, Washington |
removed |
Business Loop |
Castle Rock, Washington |
existing |
Business Loop |
Chehalis and Centralia, Washington |
existing |
Business Loop |
Olympia, Washington |
removed |
Business Loop |
Everett, Washington |
removed |
Business Loop |
Marysville, Washington |
removed |
Business Loop |
Bellingham, Washington |
removed |
|
Business Loop |
Tracy, California |
existing |
|
Business Loop |
San Diego, California |
removed |
Business Loop |
El Cajon, California |
existing |
Business Loop |
Alpine, California |
existing |
Business Loop |
El Centro, California |
existing |
Business Loop |
Winterhaven, California and Yuma, Arizona |
existing |
Business Loop |
Gila Bend, Arizona |
existing |
|
Business Loop |
Ontario, California |
existing |
Business Loop |
Colton, California |
existing |
Business Loop |
Indio, California |
existing |
Business Loop |
Blythe, California |
existing |
Business Loop |
Quartzsite, Arizona |
existing |
Business Loop |
Phoenix, Arizona |
removed |
Business Loop |
Casa Grande, Arizona |
removed |
Business Loop |
Tucson, Arizona |
removed |
Business Loop |
Tucson, Arizona |
removed |
Business Loop |
Benson, Arizona |
existing |
Business Spur |
Benson, Arizona |
removed |
Business Loop |
Willcox, Arizona |
existing |
Business Loop |
Bowie, Arizona |
existing |
Business Loop |
San Simon, Arizona |
existing |
Business Loop |
Lordsburg, New Mexico |
existing |
Business Loop |
Deming, New Mexico |
existing |
Business Loop |
Las Cruces, New Mexico |
removed |
Business Loop "C" |
Sierra Blanca, Texas |
existing |
Business Loop "D" |
Van Horn, Texas |
existing |
Business Loop "F" |
Balmorhea, Texas |
existing |
Business Loop "G" |
Fort Stockton, Texas |
existing |
|
Business Loop |
Escondido, California |
existing |
Business Loop |
Mesquite, Nevada |
existing |
Business Loop |
St. George, Utah |
existing |
Business Loop |
Cedar City, Utah |
existing |
Business Loop |
Parowan, Utah |
existing |
Business Loop |
Beaver, Utah |
existing |
Business Loop |
Fillmore, Utah |
existing |
Business Loop |
Holden, Utah |
? |
Business Loop |
Nephi, Utah |
existing |
Business Loop |
Layton, Utah |
? |
Business Loop |
Brigham City, Utah |
existing |
Business Loop |
Tremonton, Utah |
existing |
Business Loop |
Pocatello, Idaho |
existing |
Business Loop |
Idaho Falls, Idaho |
existing |
Business Loop |
Butte, Montana |
existing |
Business Loop |
Helena, Montana |
existing |
Business Loop |
Great Falls, Montana |
existing |
Business Loop |
Conrad, Montana |
existing |
Business Loop |
Shelby, Montana |
existing |
|
Business Loop |
Black Canyon City, Arizona |
existing |
|
Business Loop |
Nogales, Arizona |
existing |
|
Business Loop "B" |
Pecos, Barstow, Texas |
existing |
Business Loop "D" |
Monahans, Texas |
existing |
Business Loop "E" |
Odessa, Midland, Texas |
existing |
Business Loop "F" |
Stanton, Texas |
existing |
Business Loop "G" |
Big Spring, Texas |
existing |
Business Loop "H" |
Westbrook, Texas |
existing |
Business Loop "J" |
Colorado City, Texas |
existing |
Business Loop "K" |
Loraine, Texas |
existing |
Business Spur "L" |
Roscoe, Texas |
existing |
Business Loop "M" |
Sweetwater, Texas |
existing |
Business Loop "N" |
Trent, Texas |
existing |
Business Loop "P" |
Merkel, Texas |
existing |
Business Loop "Q" |
Tye, Texas |
existing |
Business Loop "R" |
Abilene, Texas |
existing |
Business Loop "T" |
Baird, Texas |
existing |
Business Spur |
Florence, South Carolina |
existing |
|
Business Loop |
Paducah, Kentucky |
existing |
Downtown Loop ¹ |
Paducah, Kentucky |
removed |
|
Business Loop |
Raton, New Mexico |
existing |
Business Loop |
Cheyenne, Wyoming |
existing |
|
Business Spur |
Columbia, South Carolina |
removed |
|
Business Spur |
Mount Pleasant, South Carolina |
existing |
|
Business Loop "T" |
Hale Center, Texas |
existing |
Business Loop "U" |
Plainview, Texas |
existing |
|
Business Loop |
Saint Joseph, Missouri |
existing |
Business Loop |
Elk Point, South Dakota |
existing |
Business Loop |
Brookings, South Dakota |
existing |
Downtown Spur |
Sioux Falls, South Dakota |
existing |
Business Spur |
North Sioux City, South Dakota |
existing/unsigned |
|
Downtown Loop |
Sioux Falls, South Dakota |
existing |
|
Business Loop |
Little Rock, Arkansas |
removed |
Business Loop |
Benton, Arkansas |
removed |
|
Business Spur "A" |
Laredo, Texas |
existing |
Business Loop "B" |
Encinal, Texas |
existing |
Business Loop "C" |
Cotulla, Texas |
existing |
Business Loop "D" |
Dilley, Texas |
existing |
Business Loop "E" |
Pearsall, Texas |
existing |
Business Loop "H" |
New Braunfels, Texas |
existing |
Business Loop "J" |
Kyle, Texas |
existing |
Business Loop "L" |
Round Rock, Texas |
existing |
Business Loop "M" |
Georgetown, Texas |
cancelled July 2006 |
Business Spur "V" |
Alvarado, Texas |
existing |
Business Loop "X" |
Sanger, Texas |
existing |
Business Loop |
Ames, Iowa |
existing |
Business Loop |
Clear Lake, Iowa |
existing |
|
Business Loop |
Needles, California |
existing |
Business Loop |
Kingman, Arizona |
existing |
Business Loop |
Seligman, Arizona |
existing |
Business Loop |
Ash Fork, Arizona |
existing |
Business Loop |
Williams, Arizona |
existing |
Business Loop |
Flagstaff, Arizona |
existing |
Business Loop |
Winslow, Arizona |
existing |
Business Loop |
Joseph City, Arizona |
existing |
Business Loop |
Holbrook, Arizona |
existing |
Business Loop |
Gallup, New Mexico |
existing |
Business Loop |
Grants, New Mexico |
existing |
Business Loop |
Albuquerque, New Mexico |
existing |
Business Loop |
Santa Rosa, New Mexico |
existing |
Business Loop |
Tucumcari, New Mexico |
existing |
Business Loop "A"† |
Glenrio, Texas |
existing |
Business Loop "B" |
Adrian, Texas |
existing |
Business Loop "C" |
Vega, Texas |
existing |
Business Loop "D" |
Amarillo, Texas |
existing |
Business Loop "F" |
Groom, Texas |
existing |
Business Loop "H" |
McLean, Texas |
existing |
Business Loop "J" |
Shamrock, Texas |
existing |
Business Loop |
Erick, Oklahoma |
existing |
Business Loop |
Sayre, Oklahoma |
existing |
Business Loop |
Elk City, Oklahoma |
existing |
Business Loop |
Clinton, Oklahoma |
existing |
Business Loop |
Weatherford, Oklahoma |
existing |
Business Loop |
El Reno, Oklahoma |
existing |
Business Loop |
Henryetta, Oklahoma |
existing |
Business Loop |
Sallisaw, Oklahoma |
existing |
Business Loop |
Winston-Salem and Greensboro, North Carolina |
Winston-Salem portion existing; Greensboro portion (separated by a six-mile hiatus) removed September 2008 |
Business Loop |
Raleigh, North Carolina |
removed |
|
Business Loop |
Joplin, Missouri |
existing |
Business Loop |
Sarcoxie, Missouri |
existing |
Business Loop |
Mount Vernon, Missouri |
existing |
Business Loop |
Springfield, Missouri |
existing |
Business Loop |
Lebanon, Missouri |
existing |
Business Loop |
Waynesville/St. Robert, Missouri |
existing |
Business Spur |
Ft. Leonard Wood, Missouri |
existing |
Business Loop |
Rolla, Missouri |
existing |
Business Loop |
Pacific, Missouri |
existing |
|
Business Loop "F" |
Corsicana, Texas |
existing |
Business Loop "G" |
Ennis, Texas |
existing |
Business Loop "H" |
Palmer, Texas |
existing |
Business Loop "J" |
Ferris, Texas |
existing |
|
Business Loop |
New Madrid, Missouri |
existing |
Business Loop |
Cape Girardeau, Missouri |
existing |
Business Loop |
Springfield, Illinois |
existing |
Business Loop |
Lincoln, Illinois |
existing |
Business Loop |
Bloomington-Normal, Illinois |
existing |
|
Business Loop |
Lebanon, Indiana |
removed |
|
Business Loop |
Charlotte, Michigan |
existing |
Business Loop |
Coldwater, Michigan |
existing |
Business Loop |
Lansing, Michigan |
existing |
Business Loop |
Port Huron, Michigan |
existing |
|
Business Loop |
Richfield, Utah |
existing |
Business Loop |
Salina, Utah |
existing |
Business Loop |
Green River, Utah |
existing |
Business Loop |
Grand Junction, Colorado |
existing |
Business Loop |
Palisade, Colorado |
existing |
Business Loop |
Avon, Colorado |
existing |
Business Loop |
Idaho Springs, Colorado |
existing |
Business Loop |
Denver, Colorado |
existing |
Business Loop |
Watkins, Colorado |
existing |
Business Loop |
Strasburg, Colorado |
existing |
Business Loop |
Limon, Colorado |
existing |
Business Loop |
Burlington, Colorado |
existing |
Business Loop |
Columbia, Missouri |
existing |
Business Loop |
St. Charles, Missouri |
existing |
Business Loop |
Springfield, Ohio |
existing |
|
Business Loop |
Jacksonville, Illinois |
existing |
|
Business Loop |
St. Ignace, Michigan |
existing |
Business Spur |
Sault Ste. Marie, Michigan |
existing |
Business Loop |
Pontiac, Michigan |
existing |
Business Loop |
Gaylord, Michigan |
existing |
Business Loop |
Grayling, Michigan |
existing |
Business Loop |
West Branch, Michigan |
existing |
Business Loop |
Roscommon, Michigan |
existing |
|
Business Spur |
Detroit, Michigan |
existing but unsigned |
|
Business Loop |
Moon Township, Pennsylvania |
Existing, created in 2009, replacing PA 60 Business.[2] |
|
Business Loop |
Sacramento, California |
existing |
Business Spur |
Sacramento, California |
removed |
Business Loop |
Truckee, California |
existing |
Business Loop |
Verdi, Nevada |
existing |
Business Loop |
Reno–Sparks, Nevada |
existing |
Business Loop |
Carlin, Nevada |
existing |
Business Loop |
Battle Mountain, Nevada |
existing |
Business Loop |
West Wendover, Nevada and Wendover, Utah |
existing |
Business Loop |
Evanston, Wyoming |
existing |
Business Loop |
Cheyenne, Wyoming |
existing |
Business Loop |
Pine Bluffs, Wyoming |
existing |
|
Business Loop |
York, Pennsylvania |
existing |
|
Business Loop |
Newtown, Connecticut |
removed. Now signed as part of US Route 6. |
|
Business Loop |
Nampa and Caldwell, Idaho |
existing, Part of old US 30 |
Business Loop |
Mountain Home, Idaho |
existing |
Business Loop |
Hammett, Idaho |
existing |
Business Loop |
Glenns Ferry, Idaho |
existing |
Business Loop |
Bliss, Idaho |
existing, unsigned |
Business Loop |
Jerome, Idaho |
existing, possibly being planned further |
Business Loop |
Burley, Idaho |
existing |
Business Loop |
Tremonton, Utah |
existing, Cosigned with Bus I-15 |
Business Loop |
Brigham City, Utah |
existing, Cosigned with Bus I-15 |
|
Business Loop |
North Carolina |
existing |
Business Loop |
Spartanburg, South Carolina |
existing |
|
Business Spur |
Greenville, South Carolina |
existing |
|
Business Spur |
Spartanburg, South Carolina |
existing |
|
Business Loop |
American Falls, Idaho |
Existing |
|
Business Spur |
Lebanon, New Hampshire |
removed |
|
Business Loop |
Ellensburg, Washington |
existing |
Business Loop |
Moses Lake, Washington |
existing |
Business Loop |
Medical Lake, Washington |
existing |
Business Loop |
Wallace, Idaho |
existing |
Business Loop |
Missoula, Montana |
existing |
Business Loop |
Deer Lodge, Montana |
existing |
Business Loop |
Butte, Montana |
existing |
Business Loop |
Billings, Montana |
existing |
Business Loop |
Sundance, Wyoming |
existing |
Business Loop |
Spearfish, South Dakota |
existing |
Business Loop |
Sturgis, South Dakota |
existing |
Business Loop |
Rapid City, South Dakota |
existing |
Business Loop |
Wall, South Dakota |
existing |
Business Loop |
Kadoka, South Dakota |
existing |
Business Spur |
Belvidere, South Dakota |
existing |
Business Loop |
Murdo, South Dakota |
existing |
Business Loop |
Vivian, South Dakota |
existing |
Business Loop |
Presho, South Dakota |
existing |
Business Loop |
Oacoma/Chamberlain, South Dakota |
existing |
Business Spur |
White Lake, South Dakota |
existing/unsigned |
Business Loop |
Plankinton, South Dakota |
existing |
Business Loop |
Mitchell, South Dakota |
existing |
Downtown Spur |
Sioux Falls, South Dakota |
existing |
|
Business Loop |
Benton Harbor/St. Joseph, Michigan |
existing |
Business Loop |
Kalamazoo, Michigan |
existing |
Business Loop |
Battle Creek, Michigan |
existing |
Business Loop |
Marshall, Michigan |
existing |
Business Loop |
Albion, Michigan |
existing |
Business Loop |
Jackson, Michigan |
existing |
Business Loop |
Ann Arbor, Michigan |
existing |
Business Loop |
Port Huron, Michigan |
existing |
|
Business Loop |
Brunswick, Georgia |
removed |
Business Loop |
Darien, Georgia |
existing |
Business Loop |
Fayetteville, North Carolina |
existing |
Business Loop |
Wilson and Rocky Mount, North Carolina |
removed |
Business Loop |
Wilmington, Delaware |
proposed around 2000, but rejected by city's mayor – section was temporarily signed as I-895 in early 1980s. |
Business Loop |
Mystic, Connecticut |
removed |
|
Business Spur |
Lowell, Massachusetts |
removed; now simply called the Lowell Connector. |
|
Business Spur |
Muskegon, Michigan |
removed |
Business Spur |
Portland, Michigan |
removed |
Business Loop |
Lansing, Michigan |
existing |
Business Loop |
Howell, Michigan |
existing |
Business Loop |
Farmington, Michigan |
removed |
Business Spur |
Detroit, Michigan |
removed |
|
Business Loop |
South Haven, Michigan |
existing |
Business Loop |
Holland, Michigan |
existing |
Business Spur |
Grand Rapids, Michigan |
existing |
|
Capitol Loop |
Lansing, Michigan |
existing |
|
Business Spur |
Detroit, Michigan |
removed |
† Business Loop I-40 for Glenrio, Texas is actually a spur route (at the New Mexico state line it becomes a country road), but is posted as a business loop.
¹ Downtown Loop I-24 in Paducah, Kentucky was changed to Business Loop I-24 in 2002.
References