Business Interstate Highways

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 (AASHTO). These routes connect a central or commercial district of a city or town with an Interstate bypass, and 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 have to meet Interstate Highway standards and are not considered part of the Interstate Highway System. AASHTO does, however, apply similar standards as to new U.S. Highways, requiring a new Business Interstate to meet certain design standards. Business Interstates are also sometimes routed onto freeways that were once designated as mainline Interstates themselves, such as the now-decommissioned Interstate 40 Business in Winston-Salem, North Carolina, and the existing Interstate 80 Business in Sacramento, California.

Business Interstates are most often posted in the western states, across the Great Plains and in Michigan. Eastern states generally did not designate business routes, as most of the Interstates paralleled the original U.S. Highways instead of directly replacing them. With the exception of mountainous areas, this left most of the U.S. Highways in place, or as co-signed routes with the parent Interstate, while the former routes were redesignated as local or frontage roads. In contrast, construction of the Interstate system in the western states often directly overlaid the old U.S. Highway, leaving the former road impassable or as a disconnected route. Exceptions were at cities and towns, where the freeway would shift onto a bypass around them. This often left extant segments of old U.S. Highways in place, with a business route designation applied to them as a motorist aid to and from a business district of collection of motorists services.

Like auxiliary Interstate Highways, Business Interstates can be repeated from state to state along their route. However, unlike auxiliary Interstate Highways, Business Interstates can ''also'' be repeated in several locations within the same state.

List

Defunct routes are listed in italics.

Interstate 5

*'' I-5 Bus.''—San Ysidro, National City and San Diego, California
*'' I-5 Bus.''—San Diego, California
*'' I-5 Bus.''—Solana Beach, California
*'' I-5 Bus.''—San Clemente, California
* I-5 Bus.—Irvine, California
* I-5 Bus.—Los Angeles, California
*'' I-5 Bus.–Coalinga, California
* I-5 Bus.— Woodland, California
* I-5 Bus.—Arbuckle, California
* I-5 Bus.— Williams and Maxwell, California
* I-5 Bus.—Willows and Orland, California
* I-5 Bus.—Red Bluff, California
*'' I-5 Bus.''— Cottonwood, California
*'' I-5 Bus.''— Anderson and Redding, California
* I-5 Bus.—Dunsmuir, California
* I-5 Bus.—Mount Shasta, California
* I-5 Bus.— Weed, California
* I-5 Bus.—Yreka, California
*'' I-5 Bus.''— Vancouver, Washington
* I-5 Bus.— Castle Rock, Washington
*'' I-5 Bus.''—Chehalis and Centralia, Washington
*'' I-5 Bus.''—Olympia, Washington
*'' I-5 Bus.''— Fife, Washington and Midway (near Des Moines, Washington)
*'' I-5 Bus.''—Seattle, Washington
*'' I-5 Bus.''— Marysville, Washington and Everett, Washington
*'' I-5 Bus.''— Bellingham, Washington

Interstate 205

* I-205 Bus.—Tracy, California

Interstate 8

*'' I-8 Bus.''—San Diego, California
* I-8 Bus.—El Cajon, California
*'' I-8 Bus.''— Alpine, California
* I-8 Bus.— El Centro, California
* State Bus. Route 8 (1)—Winterhaven, California and Yuma, Arizona
* State Bus. Route 8 (3)—Gila Bend, Arizona

Interstate 10

*'' I-10 Bus.''—Ontario, California
*'' I-10 Bus.''—Colton, California
*'' I-10 Bus.''—Indio, California
* I-10 Bus.—Blythe, California
* State Bus. Route 10 (1)—Quartzsite, Arizona
*'' State Bus. Route 10''—Phoenix, Arizona
*'' State Bus. Route 10''—Casa Grande, Arizona
*'' State Bus. Route 10 (2)''—Tucson, Arizona
* State Bus. Route 10 (3)—Benson, Arizona
*'' State Bus. Route 10 Spur''—Benson, Arizona
* State Bus. Route 10 (4)— Willcox, Arizona
* State Bus. Route 10 (5)—Bowie, Arizona
* State Bus. Route 10 (6)—San Simon, Arizona
* BL 21— Lordsburg, New Mexico
* BL 22—Deming, New Mexico
*'' BL''— Las Cruces, New Mexico
* Bus. I-10-C— Sierra Blanca, Texas
* Bus. I-10-D— Van Horn, Texas
* Bus. I-10-F—Balmorhea, Texas
* Bus. I-10-G—Fort Stockton, Texas

Interstate 15

* I-15 Bus.—Escondido, California
* I-15 Bus.—Victorville, California
* I-15 Bus.— Barstow, California
*'' I-15 Bus.''— Mesquite, Nevada
* I-15 Bus.- St. George, Utah
* I-15 Bus.—Cedar City, Utah
* I-15 Bus.—Parowan, Utah
* I-15 Bus.— Beaver, Utah
* I-15 Bus.—Fillmore, Utah
*'' I-15 Bus.''—Holden, Utah
* I-15 Bus.— Nephi, Utah
*'' I-15 Bus.''—Layton, Utah
* I-15 Bus.—Brigham City, Utah
* I-15 Bus.—Tremonton, Utah
* I-15 Bus.—Pocatello, Idaho
* I-15 Bus.—Idaho Falls, Idaho
* I-15 Bus.—Butte, Montana
* I-15 Bus.—Helena, Montana
* I-15 Bus.—Great Falls, Montana
* I-15 Bus.—Conrad, Montana
* I-15 Bus.— Shelby, Montana

Interstate 17

*'' State Bus. Route 17''—Black Canyon City, Arizona

Interstate 19

* State Bus. Route 19 (1)—Nogales, Arizona
*'' State Bus. Route 19 (2)''— Sahuarita, Arizona – Tucson, Arizona (Still shown on all Rand McNally road atlases.)

Interstate 20

* Bus. I-20-B—Pecos, Barstow, Texas
* Bus. I-20-D—Monahans, Texas
* Bus. I-20-E—Odessa, Midland, Texas
* Bus. I-20-F—Stanton, Texas
* Bus. I-20-G—Big Spring, Texas
* Bus. I-20-H—Westbrook, Texas
* Bus. I-20-J—Colorado City, Texas
* Bus. I-20-K—Loraine, Texas
* Bus. I-20-L—Roscoe, Texas
* Bus. I-20-M—Sweetwater, Texas
* Bus. I-20-N—Trent, Texas
* Bus. I-20-P— Merkel, Texas
* Business I-20-Q— Tye, Texas
* Bus. I-20-R—Abilene, Texas
* Bus. I-20-T—Baird, Texas
* I-20 BS—Florence, South Carolina

Interstate 24

* I-24 Bus.— Paducah, Kentucky
*'' Downtown Loop ¹''— Paducah, Kentucky

¹ Downtown Loop I-24 in Paducah, Kentucky was changed to Business Loop I-24 in 2002.

Interstate 25

* BL (11)— Williamsburg, New Mexico – Truth or Consequences, New Mexico
* BL (12)—Socorro, New Mexico
* BL (13)—Belen, New Mexico
*'' BL (14)''—Santa Fe, New Mexico
* BL (15)— Las Vegas, New Mexico
* BL (16)—Springer, New Mexico
* BL (17)— Raton, New Mexico
*'' State Highway 25A''—Trinidad, Colorado
* State Highway 25B Spur—Aguilar, Colorado
* State Highway 25C— Walsenburg, Colorado
*'' State Highway 25 Bus.''—Colorado Springs, Colorado
*'' State Highway 25 Bus.''— Castle Rock, Colorado (Likely unsigned)
* I-25 Bus.—Cheyenne, Wyoming
* I-25 Bus.—Chugwater, Wyoming
* I-25 Bus.— Wheatland, Wyoming
* I-25 Bus.—Douglas, Wyoming
* I-25 Bus.— Glenrock, Wyoming
* I-25 Bus.—Casper, Wyoming
* I-25 Bus.— Buffalo, Wyoming

Interstate 126

*'' I-126 BS''—Columbia, South Carolina

Interstate 526

* I-526 BS—Mount Pleasant, South Carolina

Interstate 27

* Bus. I-27-T—Hale Center, Texas
* Bus. I-27-U—Plainview, Texas

Interstate 29

* I-29 Bus.—Saint Joseph, Missouri
* I-29 Bus.—Elk Point, South Dakota
* I-29 Bus.—Brookings, South Dakota
* I-29 Downtown Spur— Sioux Falls, South Dakota
* I-29P Bus.—North Sioux City, South Dakota (unsigned)

Interstate 229

* I-229 Downtown Loop— Sioux Falls, South Dakota

Interstate 30

*'' I-30 Bus.''— Benton, Arkansas
*'' I-30 Bus.''—Little Rock, Arkansas

Interstate 35

* BS I-35-A—Laredo, Texas
* Bus. I-35-B—Encinal, Texas
* Bus. I-35-C— Cotulla, Texas
* Bus. I-35-D—Dilley, Texas
* Bus. I-35-E—Pearsall, Texas
* Bus. I-35-H— New Braunfels, Texas
* Bus. I-35-J— Kyle, Texas
* Bus. I-35-L— Round Rock, Texas
*'' Bus. I-35-M''—Georgetown, Texas (Cancelled July 2006)
* BS I-35-V— Alvarado, Texas
* Bus. I-35-X—Sanger, Texas
* I-35 BL—Ames, Iowa
* I-35 BL— Clear Lake, Iowa
* I-35 Bus.—Faribault, Minnesota
* I-35 Bus.—Albert Lea, Minnesota
* I-35 Bus.—Pine City, Minnesota

Interstate 40

* I-40 Bus.—Needles, California
*'' State Bus. Route 40 (0)''—Kingman, Arizona
* State Bus. Route 40 (1)—Seligman, Arizona
* State Bus. Route 40 (2)—Ash Fork, Arizona
*'' State Bus. Route 40 (3)''—Williams, Arizona
* State Bus. Route 40 (4)—Flagstaff, Arizona
*'' State Bus. Route 40 (5)''—Flagstaff, Arizona
*'' State Bus. Route 40 (6)''— Winslow, Arizona
* State Route 40 Spur— Winslow, Arizona
* State Bus. Route 40 (7)—Joseph City, Arizona
* State Bus. Route 40 (8)— Holbrook, Arizona
*'' I-40 Bus.''—Gallup, New Mexico
*'' I-40 Bus.''—Grants, New Mexico
*'' I-40 Bus.''—Albuquerque, New Mexico
* Bus. Route 40 (34)— Moriarty, New Mexico
* Bus. Route 40 (35)— Santa Rosa, New Mexico
* Bus. Route 40 (36)—Tucumcari, New Mexico
* Bus. I-40-A†—Glenrio, Texas
* Bus. I-40-B—Adrian, Texas
* Bus. I-40-C—Vega, Texas
* Bus. I-40-D—Amarillo, Texas
* Bus. I-40-F—Groom, Texas
* Bus. I-40-H—McLean, Texas
* Bus. I-40-J—Shamrock, Texas
* I-40 Bus.—Erick, Oklahoma
* I-40 Bus.—Sayre, Oklahoma
* I-40 Bus.— Elk City, Oklahoma
* I-40 Bus.— Clinton, Oklahoma
* I-40 Bus.— Weatherford, Oklahoma
* I-40 Bus.— El Reno, Oklahoma
* I-40 Bus.— Henryetta, Oklahoma
*Interstate 40 Business (Sallisaw, Oklahoma), I-40 Bus.—Sallisaw, Oklahoma
*''Interstate 40 Business (Winston-Salem, North Carolina), I-40 Bus.''—Winston-Salem, North Carolina, Winston-Salem and Greensboro, North Carolina, Greensboro, North Carolina (Winston-Salem portion removed in February 2020; Greensboro portion (separated by a six-mile gap) removed September 2008)
*''Interstate 40 Business (Raleigh, North Carolina), I-40 Bus.''—Raleigh, North Carolina (Replaced by Interstate 440 (North Carolina), Interstate 440)

† Business Loop I-40 for Glenrio, Texas is a spur route (at the New Mexico state line it becomes a country road), but is posted as a business loop.

Interstate 44

*Interstate 44 Business (Joplin, Missouri), I-44 Bus.—Joplin, Missouri
*Interstate 44 Business (Sarcoxie, Missouri), I-44 Bus.—Sarcoxie, Missouri
*Interstate 44 Business (Mount Vernon, Missouri), I-44 Bus.—Mount Vernon, Missouri
*Interstate 44 Business (Springfield, Missouri), I-44 Bus.—Springfield, Missouri
*Interstate 44 Business (Lebanon, Missouri), I-44 Bus.—Lebanon, Missouri
*Interstate 44 Business (Waynesville, Missouri), I-44 Bus.—Waynesville, Missouri, Waynesville/St. Robert, Missouri
*Interstate 44 Business (Fort Leonard Wood, Missouri), I-44 BS—Ft. Leonard Wood, Missouri
*Interstate 44 Business (Rolla, Missouri), I-44 Bus.—Rolla, Missouri
*Interstate 44 Business (Pacific, Missouri), I-44 Bus.—Pacific, Missouri

Interstate 45

*Interstate 45 Business (Corsicana, Texas), Bus. I-45-F—Corsicana, Texas
*Interstate 45 Business (Ennis, Texas), Bus. I-45-G—Ennis, Texas
*Interstate 45 Business (Palmer, Texas), Bus. I-45-H—Palmer, Texas
*Interstate 45 Business (Ferris, Texas), Bus. I-45-J—Ferris, Texas

Interstate 49

*Interstate 49 Business (Neosho, Missouri), I-49 Bus.—Neosho, Missouri
*Interstate 49 Business (Joplin, Missouri), I-49 Bus.—Joplin, Missouri
*Interstate 49 Business (Nevada, Missouri), I-49 Bus.—Nevada, Missouri
*Interstate 49 Business (Butler, Missouri), I-49 Bus.—Butler, Missouri

Interstate 55

*Interstate 55 Business (New Madrid, Missouri), I-55 Bus.—New Madrid, Missouri
*Interstate 55 Business (Cape Girardeau, Missouri), I-55 Bus.—Cape Girardeau, Missouri, Cape Girardeau-Fruitland, Missouri
*Interstate 55 Business (Crystal City, Missouri), I-55 Bus.—Crystal City, Missouri
*Interstate 55 Business (Springfield, Illinois), I-55 Bus.—Springfield, Illinois
*Interstate 55 Business (Lincoln, Illinois), I-55 Bus.—Lincoln, Illinois
*Interstate 55 Business (Bloomington, Illinois), I-55 Bus.—Bloomington, Illinois, Bloomington-Normal, Illinois

Interstate 65

*''Interstate 65 Business (Lebanon, Indiana), I-65 Bus.''—Lebanon, Indiana

Interstate 69

*Interstate 69 Business (Charlotte, Michigan), BL I-69—Charlotte, Michigan
*Interstate 69 Business (Coldwater, Michigan), BL I-69—Coldwater, Michigan
*Interstate 69 Business (Lansing, Michigan), BL I-69—Lansing, Michigan
*Interstate 69 Business (Port Huron, Michigan), BL I-69—Port Huron, Michigan

Interstate 70

*Interstate 70 Business (Richfield, Utah), I-70 Bus.—Richfield, Utah
*Interstate 70 Business (Salina, Utah), I-70 BS—Salina, Utah
*Interstate 70 Business (Green River, Utah), I-70 Bus.—Green River, Utah
*Interstate 70 Business (Grand Junction–Clifton, Colorado), I-70 Bus.—Grand Junction, Colorado
*''Interstate 70 Business (Palisade, Colorado), I-70 Bus.''—Palisade, Colorado
*''Interstate 70 Business (Rifle, Colorado), I-70 Bus.''—Rifle, Colorado (Unsigned)
*Interstate 70 Business (Silt, Colorado), I-70 Bus.—Silt, Colorado (Unsigned)
*Interstate 70 Business (Eagle, Colorado), I-70 Bus.—Eagle, Colorado (Unsigned)
*Interstate 70 Business (Edwards, Colorado), I-70 Bus.—Edwards, Colorado (Unsigned)
*''Interstate 70 Business (Avon, Colorado), I-70 Bus.''—Avon, Colorado
*''Interstate 70 Business (Frisco, Colorado), I-70 Bus.''—Frisco, Colorado
*Interstate 70 Business (Idaho Springs, Colorado), I-70 Bus.—Idaho Springs, Colorado
*Interstate 70 Business (Denver, Colorado), I-70 Bus.—Denver, Colorado
*Interstate 70 Business (Watkins, Colorado), I-70 Bus.—Watkins, Colorado
*Interstate 70 Business (Strasburg, Colorado), I-70 Bus.—Strasburg, Colorado (Unsigned)
*Interstate 70 Business (Deer Trail, Colorado), I-70 Bus.—Deer Trail, Colorado (Unsigned)
*Interstate 70 Business (Agate, Colorado), I-70 Bus.—Agate, Colorado (Unsigned)
*Interstate 70 Business (Limon, Colorado), I-70 Bus.—Limon, Colorado
*Interstate 70 Business (Vona, Colorado), I-70 Bus.—Vona, Colorado (Unsigned)
*Interstate 70 Business (Burlington, Colorado), I-70 Bus.—Burlington, Colorado
*''Interstate 70 Business (Colby, Kansas), I-70 Bus.''—Colby, Kansas
*''Interstate 70 Business (Oakley, Kansas), I-70 Bus.''—Oakley, Kansas
*''Interstate 70 Business (Hays, Kansas), I-70 Bus.''—Hays, Kansas
*Interstate 70 Business (Boonville, Missouri), I-70 Bus.—Boonville, Missouri
*Interstate 70 Business (Columbia, Missouri), I-70 Bus.—Columbia, Missouri
*Interstate 70 Business (St. Charles, Missouri), I-70 Bus.—St. Charles, Missouri
*''Interstate 70 Business (Springfield, Ohio), I-70 Bus.''—Springfield, Ohio

Interstate 72

*Interstate 72 Business (Jacksonville, IL), I-72 Bus.—Jacksonville, Illinois

Interstate 75

*Interstate 75 Business (Sault Ste. Marie, Michigan), BS I-75—Sault Ste. Marie, Michigan
*Interstate 75 Business (St. Ignace, Michigan), BL I-75—St. Ignace, Michigan
*Interstate 75 Business (Gaylord, Michigan), BL I-75—Gaylord, Michigan
*Interstate 75 Business (Grayling, Michigan), BL I-75—Grayling, Michigan
*Interstate 75 Business (Roscommon, Michigan), BL I-75—Roscommon, Michigan
*Interstate 75 Business (West Branch, Michigan), BL I-75—West Branch, Michigan
*''Interstate 75 Business (Saginaw, Michigan), BL I-75''—Saginaw, Michigan
*Interstate 75 Business (Pontiac, Michigan), BL I-75—Pontiac, Michigan
*Interstate 75 Business (Findlay, Ohio), BL I-75—Findlay, Ohio
*Interstate 75 Business (Sidney, Ohio), BL I-75—Sidney, Ohio
*Interstate 75 Business (Troy–Piqua, Ohio), BL I-75—Troy, Ohio, Troy–Piqua, Ohio
*''Interstate 75 Business (Cordele, Georgia), I-75 Bus.''—Cordele, Georgia
*''Interstate 75 Business (Adel, Georgia), I-75 Bus.''—Adel, Georgia
*Interstate 75 Business (Tifton, Georgia), I-75 Bus.—Tifton, Georgia
*Interstate 75 Business (Valdosta, Georgia), I-75 Bus.—Valdosta, Georgia

Interstate 375

*Interstate 375 Business (Detroit, Michigan), BS I-375—Detroit, Michigan (unsigned)

Interstate 76 (west)

*Interstate 76 (Colorado–Nebraska)#Keenesburg, State Highway 76B—Keenesburg, Colorado (Unsigned)
*Interstate 76 (Colorado–Nebraska)#Fort Morgan–Sterling, I-76 Bus.—Fort Morgan, Colorado—Sterling, Colorado

Interstate 376

*Interstate 376 Business, I-376 Bus.—Moon Township, Pennsylvania (Created in 2009, replacing Pennsylvania Route 60 Business, PA 60 Business.)

Interstate 80

*Interstate 80 Business (Sacramento, California), I-80 Bus.—Sacramento, California
*''California State Route 275, I-80 BS''—Sacramento, California
*Interstate 80 Business (Truckee, California), I-80 Bus.—Truckee, California
*''Interstate 80 Business (Lincoln, Nebraska), I-80 Bus.''—Lincoln, Nebraska
*''Interstate 80 Business (Sidney, Nebraska), I-80 Bus.''—Sidney, Nebraska
*Interstate 80 Business (Verdi, Nevada), I-80 Bus.—Verdi, Nevada
*Interstate 80 Business (Reno, Nevada), I-80 Bus.—Reno, Nevada, Reno–Sparks, Nevada
*Interstate 80 Business (Winnemucca, Nevada), I-80 Bus.—Winnemucca, Nevada
*Interstate 80 Business (Carlin, Nevada), I-80 Bus.—Carlin, Nevada
*Interstate 80 Business (Battle Mountain, Nevada), I-80 Bus.—Battle Mountain, Nevada
*Interstate 80 Business (West Wendover, Nevada – Wendover, Utah), I-80 Bus.—West Wendover, Nevada and Wendover, Utah
*Interstate 80 Business (Evanston, Wyoming), I-80 Bus.—Evanston, Wyoming
*Interstate 80 Business (Fort Bridger–Lyman, Wyoming), I-80 Bus.—Fort Bridger, Wyoming, Fort Bridger-Lyman, Wyoming
*Interstate 80 Business (Green River, Wyoming), I-80 Bus.—Green River, Wyoming
*Interstate 80 Business (Rock Springs, Wyoming), I-80 Bus.—Rock Springs, Wyoming
*Interstate 80 Business (Rawlins, Wyoming), I-80 Bus.—Rawlins, Wyoming
*Interstate 80 Business (Laramie, Wyoming), I-80 Bus.—Laramie, Wyoming
*Interstate 80 Business (Cheyenne, Wyoming), I-80 Bus.—Cheyenne, Wyoming
*Interstate 80 Business (Pine Bluffs, Wyoming), I-80 Bus.—Pine Bluffs, Wyoming

Interstate 83

*Interstate 83 Business, I-83 Bus.—York, Pennsylvania

Interstate 84 (east)

*Interstate 84 Business (Connecticut), I-84 Bus.—Newtown, Connecticut (Now signed as part of US Route 6.)

Interstate 84 (west)

*Interstate 84 Business (Nampa, Idaho), I-84 Bus.—Nampa, Idaho, Nampa and Caldwell, Idaho, Caldwell, Idaho (Part of old US 30)
*Interstate 84 Business (Mountain Home, Idaho), I-84 Bus.—Mountain Home, Idaho
*Interstate 84 Business (Hammett, Idaho), I-84 Bus.—Hammett, Idaho
*Interstate 84 Business (Glenns Ferry, Idaho), I-84 Bus.—Glenns Ferry, Idaho
*Interstate 84 Business (Bliss, Idaho), I-84 Bus.—Bliss, Idaho (unsigned)
*Interstate 84 Business (Jerome, Idaho), I-84 Bus.—Jerome, Idaho (Possibly being planned further)
*Interstate 84 Business (Heyburn, Idaho), I-84 Bus.—Burley, Idaho, Burley and Heyburn, Idaho
*Interstate 84 Business (Tremonton, Utah), I-84 Bus.—Tremonton, Utah (Cosigned with Bus I-15)
*Interstate 84 Business (Brigham City, Utah), I-84 Bus.—Brigham City, Utah (Cosigned with Bus I-15)

Interstate 85

*Interstate 85 Business (North Carolina), I-85 Business—Greensboro, North Carolina (Soon to be removed)
*Interstate 85 Business (Spartanburg, South Carolina), I-85 Business—Spartanburg, South Carolina

Interstate 385

*Interstate 385 Business, I-385 BS—Greenville, South Carolina (Unsigned since 2007)

Interstate 585

*''Interstate 585#Interstate 585 Business, I-585 BS''—Spartanburg, South Carolina

Interstate 86 (west)

*Interstate 86 Business (Idaho), I-86 Bus.—American Falls, Idaho

Interstate 89

*''Interstate 89 Business (New Hampshire), I-89 BS''—Lebanon, New Hampshire

Interstate 90

*Interstate 90 Business (Ellensburg, Washington), I-90 Bus.—Ellensburg, Washington
*Interstate 90 Business (Moses Lake, Washington), I-90 Bus.—Moses Lake, Washington
*Interstate 90 Business (Medical Lake, Washington), I-90 Bus.—Medical Lake, Washington
*Interstate 90 Business (Spokane Valley, Washington), I-90 Bus.—Spokane Valley, Washington
*Interstate 90 Business (Wallace, Idaho), I-90 Bus.—Wallace, Idaho
*Interstate 90 Business (Missoula, Montana), I-90 Bus.—Missoula, Montana
*Interstate 90 Business (Deer Lodge, Montana), I-90 Bus.—Deer Lodge, Montana
*Interstate 90 Business (Butte, Montana), I-90 Bus.—Butte, Montana (Co-signed with Interstate 15 Business (Butte, Montana), Bus. I-15 (Butte, Montana))
*Interstate 90 Business (Billings, Montana), I-90 Bus.—Billings, Montana
*Interstate 90 Business (Sundance, Wyoming), I-90 Bus.—Sundance, Wyoming
*Interstate 90 Business (Spearfish, South Dakota), I-90 Bus.—Spearfish, South Dakota
*Interstate 90 Business (Sturgis, South Dakota), I-90 Bus.—Sturgis, South Dakota
*Interstate 90 Business (Rapid City, South Dakota), I-90 Bus.—Rapid City, South Dakota
*Interstate 90 Business (Wall, South Dakota), I-90 Bus.—Wall, South Dakota
*Interstate 90 Business (Kadoka, South Dakota), I-90 Bus.—Kadoka, South Dakota
*Interstate 90 Business (Belvidere, South Dakota), I-90 BS—Belvidere, South Dakota
*Interstate 90 Business (Murdo, South Dakota), I-90 Bus.—Murdo, South Dakota
*Interstate 90 Business (Vivian, South Dakota), I-90 Bus.—Vivian, South Dakota
*Interstate 90 Business (Presho, South Dakota), I-90 Bus.—Presho, South Dakota
*Interstate 90 Business (Oacoma-Chamberlain, South Dakota), I-90 Bus.—Oacoma, South Dakota, Oacoma/Chamberlain, South Dakota
*Interstate 90P Business (White Lake, South Dakota), I-90 BS—White Lake, South Dakota (unsigned)
*Interstate 90 Business (Plankinton, South Dakota), I-90 Bus.—Plankinton, South Dakota
*Interstate 90 Business (Mitchell, South Dakota), I-90 Bus.—Mitchell, South Dakota
*Interstate 90 Downtown (Sioux Falls, South Dakota), I-90 BS— Sioux Falls, South Dakota

Interstate 94

*Interstate 94 Business (Benton Harbor, Michigan), BL I-94—Benton Harbor, Michigan, Benton Harbor–St. Joseph, Michigan
*Interstate 94 Business (Kalamazoo, Michigan), BS I-94—Kalamazoo, Michigan
*Interstate 94 Business (Battle Creek, Michigan), BL I-94—Battle Creek, Michigan
*Interstate 94 Business (Marshall, Michigan), BL I-94—Marshall, Michigan
*Interstate 94 Business (Albion, Michigan), BL I-94—Albion, Michigan
*Interstate 94 Business (Jackson, Michigan), BL I-94—Jackson, Michigan
*Interstate 94 Business (Ann Arbor, Michigan), BL I-94—Ann Arbor, Michigan
*Interstate 94 Business (Port Huron, Michigan), BL I-94—Port Huron, Michigan

Interstate 95

*''Interstate 95 Business (Brunswick, Georgia), I-95 Bus.''—Brunswick, Georgia
*Interstate 95 Business (Darien, Georgia), I-95 Bus.—Darien, Georgia
*Interstate 95 Business (North Carolina), I-95 Bus.—Fayetteville, North Carolina
*''Interstate 95 Business (Rocky Mount, North Carolina), I-95 Bus.''—Wilson (NC), Wilson and Rocky Mount, North Carolina
*''Interstate 95 Business (Emporia, Virginia), I-95 Bus.''—Emporia, Virginia
*''Interstate 95 Business (Wilmington, Delaware), I-95 Bus.''—Wilmington, Delaware (Proposed around 2000 (I-95 would have shifted to what is still I-495), but rejected by city's mayor—section was temporarily signed as Interstate 895 (Delaware), I-895 in early 1980s.)
*''Interstate 95 Business (Mystic, Connecticut), I-95 Bus.''- Mystic, Connecticut

Interstate 495

*''Interstate 495 Business (Massachusetts), I-495 BS''—Lowell, Massachusetts

Interstate 96

*''Interstate 96 Business (Muskegon, Michigan), BS I-96''—Muskegon, Michigan
*''Interstate 96 Business (Portland, Michigan), BS I-96''—Portland, Michigan
*Interstate 96 Business (Lansing, Michigan), BL I-96—Lansing, Michigan
*Interstate 96 Business (Howell, Michigan), BL I-96—Howell, Michigan
*''Interstate 96 Business (Farmington, Michigan), BL I-96''—Farmington, Michigan
*''Interstate 96 Business (Detroit, Michigan), BS I-96''—Detroit, Michigan

Interstate 196

*Interstate 196 Business (South Haven, Michigan), BL I-196—South Haven, Michigan
*Interstate 196 Business (Holland, Michigan), BL I-196—Holland, Michigan
*Interstate 196 Business (Wyoming, Michigan), BS I-196—Wyoming, Michigan

Interstate 496

*Capitol Loop—Lansing, Michigan

Interstate 696

*''Interstate 696 Business (Detroit, Michigan), BS I-696''—Detroit, Michigan

See also

*
* List of special routes of the United States Numbered Highway System

References

External links

Interstate Business Routes @ Interstate-Guide.com

{{interstates

Business Interstate Highways,
Lists of roads in the United States, Interstate Business