LIST OF BUSINESS ROUTES OF THE INTERSTATE HIGHWAY SYSTEM

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Business Spur and Business Loop shields

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.

:	I-5 I-205 I-8 I-10 I-15 I-16 I-20 I-24 I-25 I-26 I-27I-29 I-229 I-30 I-35 I-40 I-44 I-45 I-55 I-59 I-64 I-65 I-66 I-69 I-70 I-71 I-72 I-74 I-75 I-76 I-77 I-78 I-79 I-80 I-81 I-82 I-83 I-85 I-86 I-87 I-89 I-90 I-94 I-95 I-495 I-96 I-196 I-496 I-696 Exceptions __NOTOC__

Contents

List of Business Routes

References

List of Business Routes

Route	Cities	Status
===Interstate 5===
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	Bellingham, Washington	removed
===Interstate 205===
Business Loop	Tracy, California	existing
===Interstate 8===
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
===Interstate 10===
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	existing
Business Loop	Tucson, Arizona	removed
Business Loop	Tucson, Arizona	existing
Business Loop	Benson, Arizona	existing
Business Spur	Benson, Arizona	existing
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
===Interstate 15===
Business Loop	Escondido, California	existing
Business Loop	Mesquite, Nevada	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
===Interstate 19===
Business Loop	Nogales, Arizona	existing
===Interstate 20===
Business Loop "B"	Pecos, 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
===Interstate 24===
Business Loop	Paducah, Kentucky	existing
Downtown Loop ¹	Paducah, Kentucky	removed
===Interstate 25===
Business Loop	Raton, New Mexico	existing
Business Loop	Cheyenne, Wyoming	existing
===Interstate 27===
Business Loop "T"	Hale Center, Texas	existing
Business Loop "U"	Plainview, Texas	existing
===Interstate 29===
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
===Interstate 229===
Downtown Loop	Sioux Falls, South Dakota	existing
===Interstate 30===
Business Loop	Little Rock, Arkansas	removed
===Interstate 35===
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 Loop "V"	Alvarado, Texas	existing
Business Loop "X"	Sanger, Texas	existing
Business Loop	Ames, Iowa	existing
Business Loop	Clear Lake, Iowa	existing
===Interstate 40===
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	existing
Business Loop	Raleigh, North Carolina	removed
===Interstate 44===
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
===Interstate 45===
Business Loop "F"	Corsicana, Texas	existing
Business Loop "G"	Ennis, Texas	existing
Business Loop "H"	Palmer, Texas	existing
Business Loop "J"	Ferris, Texas	existing
===Interstate 55===
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
===Interstate 65===
Business Loop	Lebanon, Indiana	removed
===Interstate 69===
Business Loop	Charlotte, Michigan	existing
Business Loop	Coldwater, Michigan	existing
Business Loop	Lansing, Michigan	existing
Business Loop	Port Huron, Michigan	existing
===Interstate 70===
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
===Interstate 72===
Business Loop	Jacksonville, Illinois	existing
===Interstate 75===
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
===Interstate 80===
Business Loop 80	Sacramento, California	existing
Business Loop 80	Truckee, California	existing
Business Loop 80	Verdi, Nevada	existing
Business Loop 80	Reno/Sparks, Nevada	existing
Business Loop 80	Carlin, Nevada	existing
Business Loop 80	Battle Mountain, Nevada	existing
Business Loop 80	Evanston, Wyoming	existing
Business Loop 80	Cheyenne, Wyoming	existing
===Interstate 83===
Business Loop 83	York, Pennsylvania	existing
===Interstate 85===
Business Loop 85	North Carolina	existing
Business Loop 85	Spartanburg, South Carolina	existing
===Interstate 89===
Business Spur 89	Lebanon, New Hampshire	removed
===Interstate 90===
Business Loop 90	Missoula, Montana	existing
Business Loop 90	Butte, Montana	existing
Business Loop 90	Billings, Montana	existing
Business Loop 90	Sundance, Wyoming	existing
Business Loop 90	Spearfish, South Dakota	existing
Business Loop 90	Sturgis, South Dakota	existing
Business Loop 90	Rapid City, South Dakota	existing
Business Loop 90	Wall, South Dakota	existing
Business Loop 90	Kadoka, South Dakota	existing
Business Spur 90	Belvidere, South Dakota	existing
Business Loop 90	Murdo, South Dakota	existing
Business Loop 90	Vivian, South Dakota	existing
Business Loop 90	Presho, South Dakota	existing
Business Loop 90	Oacoma/Chamberlain, South Dakota	existing
Business Spur 90P	White Lake, South Dakota	existing/unsigned
Business Loop 90	Plankinton, South Dakota	existing
Business Loop 90	Mitchell, South Dakota	existing
Downtown Spur 90	Sioux Falls, South Dakota	existing
===Interstate 94===
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
===Interstate 95===
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
===Interstate 495===
Business Spur	Lowell, Massachusetts	removed
===Interstate 96===
Business Spur	Muskegon, Michigan	removed
Business Spur	Portland, Michigan	existing
Business Loop	Lansing, Michigan	existing
Business Loop	Howell, Michigan	existing
Business Loop	Farmington, Michigan	removed
Business Spur	Detroit, Michigan	removed
===Interstate 196===
Business Loop	South Haven, Michigan	existing
Business Loop	Holland, Michigan	existing
Business Spur	Grand Rapids, Michigan	existing
===Interstate 496===
Capitol Loop	Lansing, Michigan	existing
===Interstate 696===
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

1. AASHTO, Report of the Standing Committee on U.S. Route Numbering to the Standing Committee on Highways, November 15, 1997


★ Interstate Business Routes @ Interstate-Guide.com