List of business routes of the Interstate Highway System
Dwight D. Eisenhower National System of Interstate and Defense Highways | |
---|---|
System information | |
Formed | June 29, 1956[1] |
Highway names | |
Interstates | Interstate nn (I-nn) |
Business Loop: | Business Loop Interstate nn (BL I-nn) Interstate nn Business Loop (I-nn Bus. or I-nn BL) |
Business Spur: | Business Spur Interstate nn (BS I-nn) Interstate nn Business Spur (I-nn Bus. or I-nn BS) |
System links | |
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 these routes are to serve a certain downtown area, business Interstates are typically routed along surface roads. These routes 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.[2] 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. Although business Interstates are primarily found along mainline Interstates, some auxiliary Interstates can also have their own business route designations.
Like auxiliary Interstates, business Interstates can be repeated from state to state along their route. The only difference is that business Interstates can also be repeated in several locations within the same state.
Contents: |
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List[edit]
Defunct routes are listed in italics.
Interstate 5[edit]
- 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[edit]
Interstate 8[edit]
- 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[edit]
- 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[edit]
- 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[edit]
Interstate 19[edit]
- 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[edit]
- 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[edit]
Interstate 25[edit]
- 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[edit]
Interstate 526[edit]
Interstate 27[edit]
Interstate 29[edit]
- 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[edit]
Interstate 30[edit]
Interstate 35[edit]
- 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[edit]
- 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[b]—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
- I-40 Bus.—Sallisaw, Oklahoma
- I-40 Bus.—Winston-Salem and Greensboro, North Carolina (built as a freeway; Winston-Salem portion removed in February 2020; Greensboro portion, separated by a six-mile gap, removed September 2008)
- I-40 Bus.—Raleigh, North Carolina (unsigned; built as a freeway; replaced by Interstate 440)
Interstate 44[edit]
- I-44 Bus.—Joplin, Missouri
- I-44 Bus.—Sarcoxie, Missouri
- I-44 Bus.—Mount Vernon, Missouri
- I-44 Bus.—Springfield, Missouri
- I-44 Bus.—Lebanon, Missouri
- I-44 Bus.—Waynesville–St. Robert, Missouri
- I-44 BS—Ft. Leonard Wood, Missouri
- I-44 Bus.—Rolla, Missouri
- I-44 Bus.—Pacific, Missouri
Interstate 45[edit]
- Bus. I-45-F—Corsicana, Texas
- Bus. I-45-G—Ennis, Texas
- Bus. I-45-H—Palmer, Texas
- Bus. I-45-J—Ferris, Texas
Interstate 49[edit]
- I-49 Bus.—Neosho, Missouri
- I-49 Bus.—Joplin, Missouri
- I-49 Bus.—Nevada, Missouri
- I-49 Bus.—Butler, Missouri
Interstate 55[edit]
- I-55 Bus.—New Madrid, Missouri
- I-55 Bus.—Cape Girardeau-Fruitland, Missouri
- I-55 Bus.—Crystal City, Missouri
- I-55 Bus.—Springfield, Illinois
- I-55 Bus.—Lincoln, Illinois
- I-55 Bus.—Bloomington-Normal, Illinois
Interstate 65[edit]
Interstate 69[edit]
- BL I-69—Charlotte, Michigan
- BL I-69—Coldwater, Michigan
- BL I-69—Lansing, Michigan
- BL I-69—Port Huron, Michigan
Interstate 70[edit]
- I-70 Bus.—Richfield, Utah
- I-70 BS—Salina, Utah
- I-70 Bus.—Green River, Utah
- I-70 Bus.—Grand Junction, Colorado
- I-70 Bus.—Palisade, Colorado
- I-70 Bus.—Rifle, Colorado (unsigned)
- I-70 Bus.—Silt, Colorado (unsigned)
- I-70 Bus.—Eagle, Colorado (unsigned)
- I-70 Bus.—Edwards, Colorado (unsigned)
- I-70 Bus.—Avon, Colorado
- I-70 Bus.—Frisco, Colorado
- I-70 Bus.—Idaho Springs, Colorado
- I-70 Bus.—Denver, Colorado
- I-70 Bus.—Watkins, Colorado
- I-70 Bus.—Strasburg, Colorado (unsigned)
- I-70 Bus.—Deer Trail, Colorado (unsigned)
- I-70 Bus.—Agate, Colorado (unsigned)
- I-70 Bus.—Limon, Colorado
- I-70 Bus.—Vona, Colorado (unsigned)
- I-70 Bus.—Burlington, Colorado
- I-70 Bus.—Colby, Kansas
- I-70 Bus.—Oakley, Kansas
- I-70 Bus.—Hays, Kansas
- I-70 Bus.—Boonville, Missouri
- I-70 Bus.—Columbia, Missouri
- I-70 Bus.—St. Charles, Missouri
- I-70 Bus.—Springfield, Ohio
Interstate 72[edit]
Interstate 75[edit]
- BS I-75—Sault Ste. Marie, Michigan
- BL I-75—St. Ignace, Michigan
- BL I-75—Gaylord, Michigan
- BL I-75—Grayling, Michigan
- BL I-75—Roscommon, Michigan
- BL I-75—West Branch, Michigan
- BL I-75—Saginaw, Michigan
- BL I-75—Pontiac, Michigan
- BL I-75—Findlay, Ohio
- BL I-75—Sidney, Ohio
- BL I-75—Troy–Piqua, Ohio
- I-75 Bus.—Cordele, Georgia
- I-75 Bus.—Adel, Georgia
- I-75 Bus.—Tifton, Georgia
- I-75 Bus.—Valdosta, Georgia
Interstate 375[edit]
- BS I-375—Detroit, Michigan (unsigned)
Interstate 76 (west)[edit]
- State Highway 76B—Keenesburg, Colorado (unsigned)
- I-76 Bus.—Fort Morgan, Colorado—Sterling, Colorado
Interstate 376[edit]
- I-376 Bus.—Moon Township, Pennsylvania (created in 2009, replacing PA 60 Bus..[3])
Interstate 80[edit]
- I-80 Bus.—Sacramento, California (built as a freeway; western segment unsigned since 2016)
- I-80 BS—Sacramento, California
- I-80 Bus.—Truckee, California
- I-80 Bus.—Lincoln, Nebraska
- I-80 Bus.—Sidney, Nebraska
- I-80 Bus.—Verdi, Nevada
- I-80 Bus.—Reno–Sparks, Nevada
- I-80 Bus.—Winnemucca, Nevada
- I-80 Bus.—Carlin, Nevada
- I-80 Bus.—Battle Mountain, Nevada
- I-80 Bus.—West Wendover, Nevada and Wendover, Utah
- I-80 Bus.—Evanston, Wyoming
- I-80 Bus.—Fort Bridger-Lyman, Wyoming
- I-80 Bus.—Green River, Wyoming
- I-80 Bus.—Rock Springs, Wyoming
- I-80 Bus.—Rawlins, Wyoming
- I-80 Bus.—Laramie, Wyoming
- I-80 Bus.—Cheyenne, Wyoming
- I-80 Bus.—Pine Bluffs, Wyoming
Interstate 83[edit]
Interstate 84 (east)[edit]
- I-84 Bus.—Newtown, Connecticut (now signed as part of US 6 and Route 25)
Interstate 84 (west)[edit]
- I-84 Bus.—Nampa and Caldwell, Idaho (Part of old US 30)
- I-84 Bus.—Mountain Home, Idaho
- I-84 Bus.—Hammett, Idaho
- I-84 Bus.—Glenns Ferry, Idaho
- I-84 Bus.—Bliss, Idaho (unsigned)
- I-84 Bus.—Jerome, Idaho (possibly being planned further)
- I-84 Bus.—Burley and Heyburn, Idaho
- I-84 Bus.—Tremonton, Utah (cosigned with Bus I-15)
- I-84 Bus.—Brigham City, Utah (cosigned with Bus I-15)
Interstate 85[edit]
- I-85 Business—Greensboro, North Carolina (decommissioned in 2019, though signage was not fully eliminated until late 2023-early 2024)
- I-85 Business—Spartanburg, South Carolina (built as a freeway)
Interstate 385[edit]
- I-385 BS—Greenville, South Carolina (unsigned since 2007)
Interstate 585[edit]
Interstate 86 (west)[edit]
Interstate 89[edit]
Interstate 90[edit]
- I-90 Bus.—Ellensburg, Washington
- I-90 Bus.—Moses Lake, Washington
- I-90 Bus.—Medical Lake, Washington
- I-90 Bus.—Spokane Valley, Washington
- I-90 Bus.—Wallace, Idaho
- I-90 Bus.—Missoula, Montana
- I-90 Bus.—Deer Lodge, Montana
- I-90 Bus.—Butte, Montana (co-signed with Bus. I-15 (Butte, Montana))
- I-90 Bus.—Billings, Montana
- I-90 Bus.—Sundance, Wyoming
- I-90 Bus.—Spearfish, South Dakota
- I-90 Bus.—Sturgis, South Dakota
- I-90 Bus.—Rapid City, South Dakota
- I-90 Bus.—Wall, South Dakota
- I-90 Bus.—Kadoka, South Dakota
- I-90 BS—Belvidere, South Dakota
- I-90 Bus.—Murdo, South Dakota
- I-90 Bus.—Vivian, South Dakota
- I-90 Bus.—Presho, South Dakota
- I-90 Bus.—Oacoma–Chamberlain, South Dakota
- I-90 BS—White Lake, South Dakota (unsigned)
- I-90 Bus.—Plankinton, South Dakota
- I-90 Bus.—Mitchell, South Dakota
- I-90 BS—Sioux Falls, South Dakota
Interstate 94[edit]
- BL I-94—Benton Harbor–St. Joseph, Michigan
- BS I-94—Kalamazoo, Michigan
- BL I-94—Battle Creek, Michigan
- BL I-94—Marshall, Michigan
- BL I-94—Albion, Michigan
- BL I-94—Jackson, Michigan
- BL I-94—Ann Arbor, Michigan
- BL I-94—Port Huron, Michigan
Interstate 95[edit]
- I-95 Bus.—Brunswick, Georgia
- I-95 Bus.—Darien, Georgia
- I-95 Bus.—Fayetteville, North Carolina
- I-95 Bus.—Wilson and Rocky Mount, North Carolina
- I-95 Bus.—Emporia, Virginia
- 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 I-895 in early 1980s.)
- I-95 Bus.- Mystic, Connecticut
Interstate 495[edit]
- I-495 BS—Lowell, Massachusetts (built as a freeway)
Interstate 96[edit]
- BS I-96—Muskegon, Michigan
- BS I-96—Portland, Michigan
- BL I-96—Lansing, Michigan
- BL I-96—Howell, Michigan
- BL I-96—Farmington, Michigan
- BS I-96—Detroit, Michigan
Interstate 196[edit]
Interstate 496[edit]
Interstate 696[edit]
- BS I-696—Detroit, Michigan (built as a freeway)
See also[edit]
Notes[edit]
References[edit]
- ^ Weingroff, Richard F. (Summer 1996). "Federal-Aid Highway Act of 1956, Creating the Interstate System". Public Roads. 60 (1). Washington, DC: Federal Highway Administration. Retrieved March 16, 2012.
- ^ Special Committee on U.S. Route Numbering (November 15, 1997). "Report of the Special Committee on U.S. Route Numbering to the Standing Committee on Highways" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on October 16, 2017.
- ^ District 11-0 (August 19, 2009). "I-376 Corridor New Exit Numbers" (PDF). Pennsylvania Department of Transportation. Retrieved November 21, 2009.
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