List of Interstate Highways - wikipedia List of Interstate Highways Dwight D. Eisenhower National System of Interstate and Defense Highways Highway shield for Interstate 90 and the Eisenhower Interstate System Interstate Highways in the 48 contiguous states System information Formed June 29, 1956 Highway names Interstates Interstate X ( I-X ) System links Interstate Highway System Main Auxiliary Suffixed Business Future There are 70 primary Interstate Highways in the Interstate Highway System, a network of controlled - access freeways in the United States. They are assigned one - or two - digit route numbers, whereas their associated `` auxiliary '' Interstate Highways receive three - digit route numbers. Typically, odd - numbered Interstates run south - north, with lower numbers in the west and higher numbers in the east ; even - numbered Interstates run west - east, with lower numbers in the south and higher numbers in the north. Highways whose route numbers are divisible by `` 5 '' usually represent major coast - to - coast or border - to - border routes ( ex. I - 10 travels from Santa Monica, California, to Jacksonville, Florida, traveling from the Pacific to Atlantic oceans ). Additionally, auxiliary highways have their numbering system where a different number prefixes the number of its parent highway. Five route numbers are duplicated in the system, though the corresponding highways are separated by state lines which prevent confusion. The main list that discusses the primary Interstate Highways in the contiguous United States is followed by sections regarding Alaska, Hawaii, and Puerto Rico. Contents 1 Contiguous United States 2 Other jurisdictions 2.1 Hawaii 2.2 Alaska 2.3 Puerto Rico 3 In popular culture 4 See also 5 References 6 External links Contiguous United States There are 70 primary Interstate Highways listed in the table below, and 43 of them have auxiliary routes. Number Length ( mi ) Length ( km ) Southern or western terminus Northern or eastern terminus Formed Removed Notes I0002 ! I ‐ 2 46.8 75.3 US 83 in Penitas, Texas I - 69E / US 77 / US 83 in Harlingen, Texas 02013 - 01 - 01 2013 current Texas only Associated routes : none I0004 ! I ‐ 4 132.3 212.9 I - 275 in Tampa, Florida I - 95 / SR 400 Daytona Beach, Florida 01959 - 01 - 01 1959 current Florida only Associated routes : none I0005 ! I ‐ 5 1,381.29 2,222.97 Fed. 1 at Mexican border in San Ysidro, California BC 99 at Canadian border in Blaine, Washington 01956 - 01 - 01 1956 current Serves three states : CA, OR, WA Associated routes : I - 105, I - 205, I - 405, I - 505, I - 605, I - 705, I - 805 ; Future : I - 305, I - 905 I0008 ! I ‐ 8 348.25 560.45 Sunset Cliffs Boulevard / Nimitz Boulevard in San Diego, California I - 10 in Casa Grande, Arizona 01964 - 01 - 01 1964 current Serves two states : CA, AZ Associated routes : none I0010 ! I ‐ 10 2,460.34 3,959.53 SR 1 in Santa Monica, California I - 95 / US 17 / SR 228 in Jacksonville, Florida 01957 - 01 - 01 1957 current Serves eight states : CA, AZ, NM, TX, LA, MS, AL, FL Associated routes : I - 110, I - 210, I - 310, I - 410, I - 510, I - 610, I - 710, I - 910 I0011 ! I ‐ 11 15 24 US 93 near Boulder City, Nevada I - 515 / US 93 / US 95 near Henderson, Nevada 02017 - 01 - 01 2017 current Nevada only ; planned extension north and south Associated routes : none I0012 ! I ‐ 12 85.59 137.74 I - 10 in Baton Rouge, Louisiana I - 10 / I - 59 in Slidell, Louisiana 01967 - 01 - 01 1967 current Louisiana only Associated routes : none I0014 ! I ‐ 14 25.90 41.68 US 190 / SH 9 in Copperas Cove, Texas I - 35 in Belton, Texas 02017 - 01 - 26 2017 current Texas only ; planned extension east and west Associated routes : none I0015 ! I ‐ 15 1,433.52 2,307.03 I - 8 / SR 15 in San Diego, California Hwy 4 at Canadian border in Sweetgrass, Montana 01957 - 01 - 01 1957 current Serves six states : CA, NV, AZ, UT, ID, MT Associated routes : I - 115, I - 215, I - 315, I - 515 I0016 ! I ‐ 16 166.81 268.45 I - 75 in Macon, Georgia SR 404 and Montgomery Street / Martin Luther King Jr. Boulevard in Savannah, Georgia 01966 - 01 - 01 1966 current Georgia only Associated route : I - 516 I0017 ! I ‐ 17 145.76 234.58 I - 10 in Phoenix, Arizona I - 40 / SR 89A in Flagstaff, Arizona 01961 - 01 - 01 1961 current Arizona only Associated routes : none I0019 ! I ‐ 19 63.6 102.4 Fed. 15 at Mexican border in Nogales, Arizona Tucson, Arizona ( I - 10 ) 01972 - 01 - 01 1972 current Arizona only Associated routes : none Uses kilometers instead of miles I0020 ! I ‐ 20 1,539.38 2,477.39 I - 10 between Kent and Toyah, Texas I - 95 in Florence, South Carolina 01957 - 01 - 01 1957 current Serves six states : TX, LA, MS, AL, GA, SC Associated routes : I - 220, I - 520, I - 820 I0022 ! I ‐ 22 213.0 342.8 I - 269 / US 78 near Byhalia I - 65 / US 31 in Birmingham, Alabama 02012 - 01 - 01 2012 current Serves two states : Mississippi, Alabama Planned associated routes : I - 222, I - 422 I0024 ! I ‐ 24 316.36 509.13 I - 57 in Pulley 's Mill, Illinois I - 75 in Chattanooga, Tennessee 01962 - 01 - 01 1962 current Serves four states : Illinois, Kentucky, Tennessee, Georgia Associated route : I - 124 I0025 ! I ‐ 25 1,062.77 1,710.36 I - 10 / US 85 / US 180 in Las Cruces, New Mexico I - 90 / US 87 in Buffalo, Wyoming 01957 - 01 - 01 1957 current Serves three states : New Mexico, Colorado, Wyoming Associated route : I - 225 I0026 ! I ‐ 26 305.62 491.85 US 11W in Kingsport, Tennessee US 17 in Charleston, South Carolina 01960 - 01 - 01 1960 current Serves three states : Tennessee, North Carolina, South Carolina Associated routes : I - 126, I - 526 I0027 ! I ‐ 27 124.13 199.77 US 87 / Loop 289 in Lubbock, Texas I - 40 / US 87 / US 287 in Amarillo, Texas 01969 - 01 - 01 1969 current Texas only Associated routes : none I0029 ! I ‐ 29 750.58 1,207.94 I - 35 / I - 70 in Kansas City, Missouri US 81 and PTH 29 at Canadian border in Pembina, North Dakota 01958 - 01 - 01 1958 current Serves four states : Missouri, Iowa, South Dakota, North Dakota Associated routes : I - 129, I - 229 I0030 ! I ‐ 30 366.76 590.24 I - 20 in Fort Worth, Texas I - 40 / US 65 / US 67 / US 167 in North Little Rock, Arkansas 01957 - 01 - 01 1957 current Serves two states : Texas, Arkansas Associated routes : I - 430, I - 530, I - 630 I0035 ! I ‐ 35 1,569.06 2,525.16 US 83 / SH 359 / BS I - 35 and MX - 85 at Mexican border in Laredo, Texas MN 61 / LSCT / 26th Avenue in Duluth, Minnesota 01956 - 01 - 01 1956 current Serves six states : TX, OK, KS, MO, IA, MN Associated routes : I - 35E, I - 35W, I - 135, I - 235, I - 335, I - 435, I - 535, I - 635 I0037 ! I ‐ 37 143.00 230.14 US 181 in Corpus Christi, Texas I - 35 / US 281 in San Antonio, Texas 01959 - 01 - 01 1959 current Texas only Associated routes : none I0039 ! I ‐ 39 306.14 492.68 I - 55 in Normal, Illinois WIS 29 / US 51 in Wausau, Wisconsin 01984 - 01 - 01 1984 current Serves two states : Illinois, Wisconsin Associated routes : none I0040 ! I ‐ 40 2,555.10 4,112.03 I - 15 in Barstow, California US 117 / NC 132 in Wilmington, North Carolina 01964 - 01 - 01 1964 current Serves eight states : CA, AZ, NM, TX, OK, AR, TN, NC Associated routes : I - 140, I - 240, I - 440, I - 540, I - 640, I - 840 I0041 ! I ‐ 41 176.33 283.78 I - 94 / US 41 in Russell, Illinois I - 43 in Howard, Wisconsin 02015 - 01 - 01 2015 current Serves two states : Illinois, Wisconsin Associated routes : none I0043 ! I ‐ 43 191.55 308.27 I - 39 / I - 90 in Beloit, Wisconsin I - 41 / US 41 / US 141 in Howard, Wisconsin 01981 - 01 - 01 1981 current Wisconsin only Associated routes : none I0044 ! I ‐ 44 633.79 1,019.99 US 82 / US 277 / US 281 / US 287 in Wichita Falls, Texas I - 70 in St. Louis, Missouri 01958 - 01 - 01 1958 current Serves three states : Texas, Oklahoma, Missouri Associated routes : I - 244, I - 444 I0045 ! I ‐ 45 284.91 458.52 SH 87 in Galveston, Texas I - 30 in Dallas, Texas 01971 - 01 - 01 1971 current Texas only Associated route : I - 345 I0049 ! I ‐ 49 388.25 624.83 I - 10 in Lafayette, Louisiana I - 435 in Kansas City, Missouri 01984 - 01 - 01 1984 current Serves three states : Louisiana, Arkansas, Missouri Associated routes : none I0055 ! I ‐ 55 964.25 1,551.81 I - 10 in LaPlace, Louisiana US 41 in Chicago, Illinois 01960 - 01 - 01 1960 current Serves six states : LA, MS, TN, AR, MO, IL Associated routes : I - 155, I - 255, I - 355 ; I - 555 I0057 ! I ‐ 57 386.12 621.40 I - 55 in Miner, Missouri I - 94 in Chicago, Illinois 01965 - 01 - 01 1965 current Serves two states : Missouri, Illinois. Planned in 1 more : Arkansas Associated routes : none I0059 ! I ‐ 59 445.23 716.53 I - 10 / I - 12 in Slidell, Louisiana I - 24 in Lookout Mountain, Georgia 01960 - 01 - 01 1960 current Serves four states : Louisiana, Mississippi, Alabama, Georgia Associated routes : I - 359, I - 459, I - 759 I0064 ! I ‐ 64 953.74 1,534.90 I - 70 in Wentzville, Missouri I - 264 / I - 664 in Chesapeake, Virginia 01961 - 01 - 01 1961 current Serves six states : MO, IL, IN, KY, WV, VA Associated routes : I - 264, I - 464, I - 564, I - 664 I0065 ! I ‐ 65 887.30 1,427.97 I - 10 in Mobile, Alabama I - 90, US - 12, US - 20 in Gary, Indiana 01958 - 01 - 01 1958 current Serves four states : Alabama, Tennessee, Kentucky, Indiana Associated routes : I - 165, I - 265, I - 465, I - 565, I - 865 I0066 ! I ‐ 66 76.28 122.76 I - 81 in Front Royal, Virginia US 29 in Washington, D.C. 01982 - 01 - 01 1982 current Serves District of Columbia and one state : Virginia Associated routes : None, had one proposed auxiliary route, I - 266, but was cancelled due to freeway revolts. I0068 ! I ‐ 68 112.9 181.7 I - 79 in Morgantown, West Virginia I - 70 in Hancock, Maryland 01991 - 01 - 01 1991 current Serves two states : West Virginia, Maryland Associated routes : None I0069 ! I ‐ 69 705.40 1,135.23 I - 69E / US 77 & I - 69W / US 59 in Victoria, Texas ( future ) Hwy 402 at Canadian border in Port Huron, Michigan 01957 - 01 - 01 1957 current Unfinished Texas section : Rosenberg ( US - 59 / Spur 529 ) to Splendora ( US 59 / Mandell Road ) Unfinished Mississippi - Tennessee section : Banks, Mississippi ( MS 304 / MS 713 ) to Frayser, Tennessee ( US 51 / TN 3 ) Unfinished Indiana section : Bloomington, Indiana to Indianapolis, Indiana Serves six states : TX, MS, TN, KY, IN, MI. Planned / started in 2 more : LA, AR Associated routes : I - 69C, I - 69E, I - 69W, I - 169, I - 269, I - 369, I - 469 ; Planned : I - 169 in Tennessee, I - 369 in Kentucky I0070 ! I ‐ 70 2,153.43 3,465.61 I - 15 in Cove Fort, Utah Park and ride in Baltimore, Maryland 01956 - 01 - 01 1956 current Serves 10 states : UT, CO, KS, MO, IL, IN, OH, WV, PA, MD Associated routes : I - 170, I - 270, I - 370, I - 470, I - 670 I0071 ! I ‐ 71 343.78 553.26 I - 64 in Louisville, Kentucky I - 90 in Cleveland, Ohio 01959 - 01 - 01 1959 current Serves two states : Kentucky, Ohio Associated routes : I - 271, I - 471 I0072 ! I ‐ 72 179.29 288.54 US 61 in Hannibal, Missouri I - 57 in Champaign, Illinois 01970 - 01 - 01 1970 current Serves two states : Missouri, Illinois Associated route : I - 172 I0073 ! I ‐ 73 82.4 132.6 US 220 near Ellerbe, North Carolina I ‐ 840 / Bryan Boulevard in Greensboro, North Carolina 01997 - 01 - 01 1997 current North Carolina only Associated routes : none I0074 ! I ‐ 74 440.91 709.58 I - 80 in Bettendorf, Iowa NC 41 near Lumberton, North Carolina 01974 - 01 - 01 1974 current Serves five states : IA, IL, IN, OH, NC Associated routes : I - 474 I0075 ! I ‐ 75 1,786.47 2,875.04 SR 826 near Hialeah, Florida Sault Ste. Marie, Michigan ( Canada ) 01958 - 01 - 01 1958 current Serves six states : FL, GA, TN, KY, OH, MI Associated routes : I - 175, I - 275, I - 375, I - 475, I - 575, I - 675 I0076 ! I ‐ 76 187.34 301.49 West Denver, Colorado ( I - 70 ) Big Springs, Nebraska ( I - 80 ) 01975 - 01 - 01 1975 current Serves two states : Colorado, Nebraska Associated routes : none I0076 ! I ‐ 76 434.36 699.03 East Westfield Center, Ohio ( I - 71 ) Bellmawr, New Jersey ( I - 295 ) 01964 - 01 - 01 1964 current Serves three states : Ohio, Pennsylvania, New Jersey Associated routes : I - 176, I - 276, I - 376, I - 476, I - 676 ; Future : I - 576 I0077 ! I ‐ 77 610.10 981.86 Columbia, South Carolina ( I - 26 ) Cleveland, Ohio ( I - 90 ) 01958 - 01 - 01 1958 current Serves five states : South Carolina, North Carolina, Virginia, West Virginia, Ohio Associated route : I - 277 I0078 ! I ‐ 78 143.56 231.04 Union Township, Pennsylvania ( I - 81 ) New York City 01957 - 01 - 01 1957 current Serves three states : Pennsylvania, New Jersey, New York Associated routes : I - 278, I - 478, I - 678, I - 878 I0079 ! I ‐ 79 343.24 552.39 Charleston, West Virginia ( I - 77 ) Erie, Pennsylvania ( PA - 5 ) 01967 - 01 - 01 1967 current Serves two states : West Virginia, Pennsylvania Associated routes : I - 279, I - 579 I0080 ! I ‐ 80 2,899.54 4,666.36 San Francisco, California ( US 101 ) Teaneck, New Jersey ( I - 95 ) 01956 - 01 - 01 1956 current Serves 11 states : CA, NV, UT, WY, NE, IA, IL, IN, OH, PA, NJ Associated routes : I - 180, I - 238 I - 280, I - 380, I - 480, I - 580, I - 680, I - 780, I - 880, I - 980 I0081 ! I ‐ 81 854.89 1,375.81 Dandridge, Tennessee ( I - 40 ) Fisher 's Landing, New York ( Canada ) 01961 - 01 - 01 1961 current Serves six states : TN, VA, WV, MD, PA, NY Associated routes : I - 381, I - 481, I - 581, I - 781 I0082 ! I ‐ 82 143.58 231.07 Ellensburg, Washington ( I - 90 ) Hermiston, Oregon ( I - 84 ) 01957 - 01 - 01 1957 current Serves two states : Washington, Oregon Associated route : I - 182 I0083 ! I ‐ 83 85.3 137.3 Baltimore, Maryland Harrisburg, Pennsylvania ( I - 81 ) 01959 - 01 - 01 1959 current Serves two states : Maryland, Pennsylvania Associated route : I - 283 I0084 ! I ‐ 84 769.62 1,238.58 West Portland, Oregon ( I - 5 ) Echo, Utah ( I - 80 ) 01980 - 01 - 01 1980 current Serves three states : Oregon, Idaho, Utah Associated route : I - 184 I0084 ! I ‐ 84 232.4 374.0 East Scranton, Pennsylvania ( I - 81 ) Sturbridge, Massachusetts ( I - 90 ) 01963 - 01 - 01 1963 current Serves four states : Pennsylvania, New York, Connecticut, Massachusetts Associated routes : I - 384, I - 684 I0085 ! I ‐ 85 668.75 1,076.25 Montgomery, Alabama ( I - 65 ) Petersburg, Virginia ( I - 95 ) 01958 - 01 - 01 1958 current Serves five states : Alabama, Georgia, South Carolina, North Carolina, Virginia Associated routes : I - 185, I - 285, I - 385, I - 485, I - 585, I - 785, I - 985 ; Planned : I - 685 I0086 ! I ‐ 86 62.85 101.15 West Heyburn, Idaho ( I - 84 ) Pocatello, Idaho ( I - 15 ) 01980 - 01 - 01 1980 current Idaho only Associated routes : none I0086 ! I ‐ 86 183.56 295.41 East Erie, Pennsylvania ( I - 90 ) Windsor, New York ( NY 79 ) 01999 - 01 - 01 1999 current Serves two states : Pennsylvania, New York Associated routes : none I0087 ! I ‐ 87 10.4 16.7 Raleigh, North Carolina ( I - 440 / US 64 / US 264 ) Wendell, North Carolina ( US 64 / US 264 ) 02017 - 01 - 01 2017 current North Carolina only Associated routes : None, will eventually have one spur route, I - 587. I0087 ! I ‐ 87 333.49 536.70 New York City ( I - 278 ) Champlain, New York ( A-15 at Canadian border ) 01957 - 01 - 01 1957 current New York only Associated routes : I - 287, I - 587, I - 787 I0088 ! I ‐ 88 140.6 226.3 West Barstow, Illinois ( I - 80 ) Hillside, Illinois ( I - 290 ) 01987 - 01 - 01 1987 current Illinois only Associated routes : none I0088 ! I ‐ 88 117.75 189.50 East Binghamton, New York ( I - 81 ) Schenectady, New York ( I - 90 ) 01968 - 01 - 01 1968 current New York only Associated routes : none I0089 ! I ‐ 89 191.12 307.58 Bow, New Hampshire ( I - 93 ) Highgate Springs, Vermont ( Route 133 at Canadian border / future A-35 ) 01960 - 01 - 01 1960 current Serves two states : New Hampshire, Vermont Associated route : I - 189 I0090 ! I ‐ 90 3,020.44 4,860.93 Seattle, Washington ( WA 519 ) Boston, Massachusetts ( MA 1A ) 01956 - 01 - 01 1956 current Serves 13 states : WA, ID, MT, WY, SD, MN, WI, IL, IN, OH, PA, NY, MA Associated routes : I - 190, I - 290, I - 390, I - 490, I - 590, I - 690, I - 790, I - 890, I - 990 I0091 ! I ‐ 91 290.37 467.31 New Haven, Connecticut / North Haven, Connecticut ( I - 95 ) Derby Line, Vermont ( A-55 at Canadian border ) 01958 - 01 - 01 1958 current Serves three states : Connecticut, Massachusetts, Vermont Associated routes : I - 291, I - 391, I - 691 I0093 ! I ‐ 93 189.95 305.69 Canton, Massachusetts ( I - 95 ) St. Johnsbury, Vermont ( I - 91 ) 01957 - 01 - 01 1957 current Serves three states : Massachusetts, New Hampshire, Vermont Associated routes : I - 293, I - 393 I0094 ! I ‐ 94 1,585.20 2,551.13 Billings, Montana ( I - 90 ) Port Huron, Michigan ( Hwy 402 at Canadian border ) 01956 - 01 - 01 1956 current Serves seven states : MT, ND, MN, WI, IL, IN, MI Associated routes : I - 194, I - 294, I - 394, I - 494, I - 694, I - 794, I - 894 I0095 ! I ‐ 95 1,925.74 3,099.18 US 1 in Miami, Florida NB 95 at Canadian border in Houlton, Maine 01957 - 01 - 01 1957 current Serves DC and 15 states : FL, GA, SC, NC, VA, MD, DE, PA, NJ, NY, CT, RI, MA, NH, ME Associated routes : I - 195, I - 295, I - 395, I - 495, I - 595, I - 695, I - 795, I - 895 I0096 ! I ‐ 96 192.06 309.09 Muskegon, Michigan ( US 31 ) Detroit, Michigan ( I - 75 ) 01959 - 01 - 01 1959 current Michigan only Associated routes : I - 196, I - 296, I - 496, I - 696 I0097 ! I ‐ 97 17.62 28.36 Annapolis, Maryland ( US 50 ) Baltimore, Maryland ( I - 695 / I - 895 ) 01987 - 01 - 01 1987 current Maryland only Associated routes : None, had 2 auxiliary routes planned, I - 197 and I - 297, but they were replaced by I - 595 and MD Route 3. I0099 ! I ‐ 99 98.86 159.10 Bedford, Pennsylvania ( I - 70 / I - 76 ) Painted Post, New York ( I - 86 ) 01998 - 01 - 01 1998 current Unfinished Pennsylvania section : Bellefonte, Pennsylvania ( I - 80 ) to New York border near Lawrenceville, Pennsylvania ( US 15 ) Serves two states : Pennsylvania, New York Associated routes : none Other jurisdictions In addition to the 48 contiguous states, Interstate Highways are found in Hawaii, Alaska, and Puerto Rico. The Federal Highway Administration funds four routes in Alaska and three routes in Puerto Rico under the same program as the rest of the Interstate Highway System. However, these routes are not required to meet the same standards as the mainland routes : `` Highways on the Interstate System in Alaska and Puerto Rico shall be designed in accordance with such geometric and construction standards as are adequate for current and probable future traffic demands and the needs of the locality of the highway. '' Hawaii The Interstate Highways in the island of Oʻahu, Hawaii are signed with the standard Interstate Highway shield, with the letter `` H - '' prefixed before the number. They are fully controlled - access routes built to the same standards as the mainland Interstate Highways. Number Length ( mi ) Length ( km ) Southern or western terminus Northern or eastern terminus Formed Removed Notes I0001 ! H - 1 27.16 43.71 Route 93 in Kapolei Route 72 in Honolulu 01959 - 01 - 01 1959 current Associated route : H - 201 I0002 ! H - 2 8.33 13.41 H - 1 in Pearl City Route 99 in Wahiawa 01976 - 01 - 01 1976 current I0003 ! H - 3 15.32 24.66 H - 1 & H - 201 in Halawa Marine Corps Base Hawaii 01997 - 01 - 01 1997 current I0004 ! H - 4 6.5 10.5 -- -- -- -- Was to have provided relief around the congested areas of H - 1, but the idea was not popular and was never built. Former Alaska Main article : Interstate Highways in Alaska Map of the Interstates in Alaska Alaska 's Interstate Highways are unsigned as such, although they all have state highway numbers that do not match the Interstate Highway numbers. Number Length ( mi ) Length ( km ) Southern or western terminus Northern or eastern terminus Formed Removed Notes 1 ! A ‐ 1 408.23 656.98 Anchorage Canadian border in Alcan Border 01976 - 01 - 01 1976 current Glenn Highway, Richardson Highway, Tok Cut - Off, Alaska Highway 2 ! A ‐ 2 202.18 325.38 Tok Fairbanks 01976 - 01 - 01 1976 current Alaska Highway, Richardson Highway 3 ! A ‐ 3 148.12 238.38 Anchorage Soldotna 01976 - 01 - 01 1976 current Seward Highway, Sterling Highway 4 ! A ‐ 4 323.69 520.93 Gateway, near Palmer Fairbanks 01976 - 01 - 01 1976 current Parks Highway Puerto Rico Main article : List of highways in Puerto Rico § Interstates Map of the Interstates in Puerto Rico Like Alaska, Puerto Rico signs its Interstate Highways as territorial routes, and the numbers do not match their official Interstate Highway designations. Many of the territory 's routes are freeway - standard toll roads. Number Length ( mi ) Length ( km ) Southern or western terminus Northern or eastern terminus Formed Removed Notes I0001 ! PRI - 1 71.08 114.39 PR - 2 in Ponce PR - 2 in San Juan 01953 - 01 - 01 1953 current Follows PR - 52 I0002 ! PRI - 2 138.13 222.30 PR - 1 in Ponce PR - 3 in San Juan 01953 - 01 - 01 1953 current Follows PR - 22 I0003 ! PRI - 3 65.27 105.04 PR - 3 in Humacao PR - 2 in San Juan 01953 - 01 - 01 1953 current Follows PR - 66 In popular culture The title of interactive fiction I - 0 refers to the fictional `` Interstate Zero ''. See also U.S. Roads portal List of auxiliary Interstate Highways Future Interstate Highways References Jump up ^ Weingroff, Richard F. ( Summer 1996 ). `` Federal - Aid Highway Act of 1956, Creating the Interstate System ''. Public Roads. Washington, DC : Federal Highway Administration. 60 ( 1 ). Retrieved March 16, 2012. ^ Jump up to : Adderley, Kevin ( January 15, 2014 ). `` Table 1 : Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of December 31, 2013 ''. Route Log and Finder List. Federal Highway Administration. Jump up ^ Staff. `` FHWA Route Log and Finder List ''. Federal Highway Administration. Retrieved May 24, 2007. Jump up ^ Voss, Oscar. `` Alaska Roads : Interstate ends photos ''. Retrieved May 24, 2007. ^ Jump up to : Witt, Jennifer W. ( 2010 ). Annual Traffic Volume Report ( PDF ) ( Report ) ( 2008 - 2009 - 2010 ed. ). Alaska Department of Transportation & Public Facilities. Archived from the original ( PDF ) on March 30, 2014. Retrieved March 15, 2012. ^ Jump up to : Birkholz, Ethan ( 2010 ). Annual Traffic Volume Report ( PDF ) ( Report ) ( 2008 - 2009 - 2010 ed. ). Alaska Department of Transportation & Public Facilities. Archived from the original ( PDF ) on April 17, 2014. Retrieved May 31, 2012. ^ Jump up to : Staff. `` Dwight D. Eisenhower Interstate Routes Statewide '' ( PDF ). Federal Highway Administration. Retrieved May 31, 2012. ^ Jump up to : Staff. `` Alaska Department of Transportation and Public Facilities Routes by Description : CDS Route Numbers as of 28 October 2008 '' ( PDF ). Federal Highway Administration. Retrieved May 31, 2012. Jump up ^ Voss, Oscar. `` Puerto Rico road photos ''. Retrieved May 24, 2007. Jump up ^ `` I - 0 ''. Interactive Fiction Database. Retrieved 1 February 2016. External links Alaska Roads - Interstate ends photos Puerto Rico road photos The Dwight D. Eisenhower National System of Interstate and Defense Highways Route Log and Finder List 3 - digit Interstate Highways Primary Interstate Highways Signed 5 8 10 11 12 14 15 16 17 19 20 22 24 25 26 27 29 30 35 37 39 40 41 43 44 45 49 55 57 59 64 65 66 68 69 70 71 72 73 74 75 76 CO -- NE OH -- NJ 77 78 79 80 81 82 83 84 OR -- UT PA -- MA 85 86 ID PA -- NY 87 NC NY 88 IL NY 89 90 91 93 94 95 96 97 99 H - 1 H - 2 H - 3 Unsigned A-1 A-2 A-3 A-4 PRI - 1 PRI - 2 PRI - 3 Lists Primary Auxiliary Suffixed Business Future Other Standards Temporary Bypassed Gaps Tolled Major Interstates highlighted Retrieved from `` https://en.wikipedia.org/w/index.php?title=List_of_Interstate_Highways&oldid=855088499 '' Categories : Interstate Highway System Lists of roads in the United States Hidden categories : Use mdy dates from August 2013 Talk Contents About Wikipedia Deutsch Eesti Español Esperanto Euskara Português Simple English Tiếng Việt 中文 Edit links This page was last edited on 15 August 2018, at 21 : 22 ( UTC ). 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Question: what is the longest interstate highway in the united states
Answer: I‑80