Lista de carreteras interestatales

Hay 70 carreteras interestatales principales en el sistema de carreteras interestatales, una red de autopistas en los Estados Unidos. Se les asignan números de ruta de uno o dos dígitos, mientras que sus autopistas interestatales auxiliares asociadas reciben números de ruta de tres dígitos. Por lo general, las carreteras interestatales con números impares corren de sur a norte, con números más bajos en el oeste y números más altos en el este; Las interestatales pares corren de oeste a este, con números más bajos en el sur y números más altos en el norte. Las carreteras cuyos números de ruta son divisibles por 5 generalmente representan rutas principales de costa a costa o de frontera a frontera (por ejemplo, la I-10 viaja desde Santa Mónica, California, a Jacksonville, Florida, viajando desde el océano Pacífico hasta el Atlántico). Además, las carreteras auxiliares tienen su sistema de numeración donde un número diferente precede al número de su carretera principal.

Cinco números de ruta están duplicados en el sistema, aunque las carreteras correspondientes están separadas por límites estatales para evitar confusiones. La lista principal que analiza las carreteras interestatales principales en los Estados Unidos contiguos va seguida de secciones relacionadas con Alaska, Hawái y Puerto Rico.

Estados Unidos contiguos

Hay 70 carreteras interestatales principales enumeradas a continuación.

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
I-2	46.80	75.32	US 83 in Peñitas, Texas	I-69E/US 77/US 83 in Harlingen, Texas	02013-01-012013	current	Texas only Associated routes: none
I-4	132.30	212.92	I-275 in Tampa, Florida	I-95/SR 400 in Daytona Beach, Florida	01959-01-011959	current	Florida only Associated routes: none
I-5	1381.29	2,222.97	Fed. 1 at Mexican border in San Ysidro, California	BC 99 at Canadian border in Blaine, Washington	01956-01-011956	current	Serves three states: California, Oregon, Washington Associated routes: I-105, I-205, I-405, I-505, I-605, I-705, I-805; Future: I-305, I-905
I-8	348.25	560.45	Sunset Cliffs Boulevard/Nimitz Boulevard in San Diego, California	I-10 in Casa Grande, Arizona	01964-01-011964	current	Serves two states: California, Arizona Associated routes: none
I-10	2460.34	3,959.53	SR 1 in Santa Monica, California	I-95/US 17/SR 228 in Jacksonville, Florida	01957-01-011957	current	Serves eight states: California, Arizona, New Mexico, Texas, Louisiana, Mississippi, Alabama, Florida Associated routes: I-110, I-210, I-310, I-410, I-510, I-610, I-710, I-910
I-11	22.60	36.37	US 93 at Arizona state line near Boulder City, Nevada	I-215/I-515/US 93/US 95/SR 564 in Henderson, Nevada	02017-01-012017	current	Nevada only; planned extension north and south Associated routes: none
I-12	85.59	137.74	I-10 in Baton Rouge, Louisiana	I-10/I-59 in Slidell, Louisiana	01967-01-011967	current	Louisiana only Associated routes: none
I-14	25.10	40.39	US 190/SH 9 in Copperas Cove, Texas	I-35 in Belton, Texas	02017-01-262017	current	Texas only; planned extension east and west Associated routes: none
I-15	1433.52	2,307.03	I-8/SR 15 in San Diego, California	Hwy. 4 at Canadian border in Sweetgrass, Montana	01957-01-011957	current	Serves six states: California, Nevada, Arizona, Utah, Idaho, Montana Associated routes: I-115, I-215, I-315, I-515
I-16	166.81	268.45	I-75 in Macon, Georgia	SR 404 and Montgomery Street/Martin Luther King Jr. Boulevard in Savannah, Georgia	01966-01-011966	current	Georgia only Associated route: I-516
I-17	145.76	234.58	I-10/US 60 in Phoenix, Arizona	I-40/SR 89A in Flagstaff, Arizona	01961-01-011961	current	Arizona only Associated routes: none
I-19	63.35	101.95	Fed. 15 at Mexican border in Nogales, Arizona	I-10 in Tucson, Arizona	01972-01-011972	current	Arizona only Associated routes: none Uses kilometers instead of miles
I-20	1539.38	2,477.39	I-10 at Scroggins Draw, Texas	I-95 in Florence, South Carolina	01957-01-011957	current	Serves six states: Texas, Louisiana, Mississippi, Alabama, Georgia, South Carolina Associated routes: I-220, I-520, I-820
I-22	202.22	325.44	I-269/US 78 near Byhalia, Mississippi	I-65/US 31 in Birmingham, Alabama	02012-01-012012	current	Serves two states: Mississippi, Alabama Planned associated routes: I-222, I-422
I-24	316.36	509.13	I-57 in Pulley's Mill, Illinois	I-75 in Chattanooga, Tennessee	01962-01-011962	current	Serves four states: Illinois, Kentucky, Tennessee, Georgia Associated route: I-124
I-25	1061.67	1,708.59	I-10/US 85/US 180 in Las Cruces, New Mexico	I-90/US 87 in Buffalo, Wyoming	01957-01-011957	current	Serves three states: New Mexico, Colorado, Wyoming Associated route: I-225
I-26	304.64	490.27	US 11W/US 23 in Kingsport, Tennessee	US 17 in Charleston, South Carolina	01960-01-011960	current	Serves three states: Tennessee, North Carolina, South Carolina Associated routes: I-126, I-526
I-27	124.13	199.77	US 87/Loop 289 in Lubbock, Texas	I-40/US 87/US 287/US 60 in Amarillo, Texas	01969-01-011969	current	Texas only Associated routes: none
I-29	755.51	1,215.88	I-35/I-70/US 24/US 40/US 71 in Kansas City, Missouri	US 81 and PTH 75 at Canadian border in Pembina, North Dakota	01958-01-011958	current	Serves four states: Missouri, Iowa, South Dakota, North Dakota Associated routes: I-129, I-229
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	01957-01-011957	current	Serves two states: Texas, Arkansas Associated routes: I-430, I-530, I-630
I-35	1568.38	2,524.06	US 83/SH 359/BS I-35 and MX-85 at Mexican border in Laredo, Texas	MN 61/LSCT/26th Avenue in Duluth, Minnesota	01956-01-011956	current	Serves six states: Texas, Oklahoma, Kansas, Missouri, Iowa, Minnesota Associated routes: I-35E, I-35W, I-135, I-235, I-335, I-435, I-535, I-635
I-37	143.00	230.14	US 181 in Corpus Christi, Texas	I-35/US 281 in San Antonio, Texas	01959-01-011959	current	Texas only Associated routes: none
I-39	306.14	492.68	I-55 in Normal, Illinois	WIS 29/US 51 in Wausau, Wisconsin	01984-01-011984	current	Serves two states: Illinois, Wisconsin Associated routes: none
I-40	2556.61	4,114.46	I-15 in Barstow, California	US 117/NC 132 in Wilmington, North Carolina	01964-01-011964	current	Serves eight states: California, Arizona, New Mexico, Texas, Oklahoma, Arkansas, Tennessee, North Carolina Associated routes: I-140, I-240, I-440, I-540, I-640, I-840
I-41	175.00	281.64	I-94/US 41 in Russell, Illinois	I-43/US 41/US 141 in Howard, Wisconsin	02015-01-012015	current	Serves two states: Illinois, Wisconsin Associated routes: none
I-42	142.00	228.53	I-40/US 70 in Garner, North Carolina	US 70 in Morehead City, North Carolina	proposed	—	Future Interstate, will only serve North Carolina Associated routes: none
I-43	191.55	308.27	I-39/I-90 in Beloit, Wisconsin	I-41/US 41/US 141 in Howard, Wisconsin	01981-01-011981	current	Wisconsin only Associated routes: none
I-44	636.69	1,024.65	US 82/US 277/US 281/US 287 in Wichita Falls, Texas	I-70 in St. Louis, Missouri	01958-01-011958	current	Serves three states: Texas, Oklahoma, Missouri Associated routes: I-244, I-444
I-45	284.91	458.52	SH 87 in Galveston, Texas	I-30/US 67/US 75 in Dallas, Texas	01971-01-011971	current	Texas only Associated route: I-345
I-49	528.02	849.77	I-10 in Lafayette, Louisiana	I-435/I-470/US 50/US 71 in Kansas City, Missouri	01984-01-011984	current	Serves three states: Louisiana, Arkansas, Missouri Associated routes: none
I-55	964.25	1,551.81	I-10 in LaPlace, Louisiana	US 41 in Chicago, Illinois	01960-01-011960	current	Serves six states: Louisiana, Mississippi, Tennessee, Arkansas, Missouri, Illinois Associated routes: I-155, I-255, I-355, I-555
I-57	386.12	621.40	I-55 in Miner, Missouri	I-94 in Chicago, Illinois	01965-01-011965	current	Serves two states: Missouri, Illinois; planned in 1 more: Arkansas Associated routes: none
I-59	445.23	716.53	I-10/I-12 in Slidell, Louisiana	I-24 in Wildwood, Georgia	01960-01-011960	current	Serves four states: Louisiana, Mississippi, Alabama, Georgia Associated routes: I-359, I-459, I-759
I-64	963.52	1,550.64	I-70/US 61 in Wentzville, Missouri	I-264/I-664 in Chesapeake, Virginia	01961-01-011961	current	Serves six states: Missouri, Illinois, Indiana, Kentucky, West Virginia, Virginia Associated routes: I-264, I-464, I-564, I-664
I-65	887.30	1,427.97	I-10 in Mobile, Alabama	US 12/US 20 in Gary, Indiana	01958-01-011958	current	Serves four states: Alabama, Tennessee, Kentucky, Indiana Associated routes: I-165, I-265, I-465, I-565, I-865
I-66	76.28	122.76	I-81 in Front Royal, Virginia	US 29 in Washington, D.C.	01961-01-011961	current	Serves DC and one state: Virginia Associated routes: none, had one auxiliary route planned, I-266, but it was cancelled due to freeway revolts.
I-68	113.15	182.10	I-79 in Morgantown, West Virginia	I-70 in Hancock, Maryland	01991-01-011991	current	Serves two states: West Virginia, Maryland Associated routes: None
I-69	721.57	1,161.25	I-69E/US 77 & I-69W/US 59 in Victoria, Texas (future)	Hwy 402 at Canadian border in Port Huron, Michigan	01957-01-011957	current	Unfinished in Texas, Mississippi, Tennessee, and Indiana Serves six states: Texas, Mississippi, Tennessee, Kentucky, Indiana, Michigan. Planned/started in 2 more: Louisiana, Arkansas 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
I-70	2172.16	3,495.75	I-15 in Cove Fort, Utah	Park and ride in Baltimore, Maryland	01956-01-011956	current	Serves 10 states: Utah, Colorado, Kansas, Missouri, Illinois, Indiana, Ohio, West Virginia, Pennsylvania, Maryland Associated routes: I-170, I-270, I-370, I-470, I-670
I-71	345.57	556.14	I-64 in Louisville, Kentucky	I-90 in Cleveland, Ohio	01959-01-011959	current	Serves two states: Kentucky, Ohio Associated routes: I-271, I-471
I-72	179.29	288.54	US 61 in Hannibal, Missouri	Church Street and University Avenue in Champaign, Illinois	01970-01-011970	current	Serves two states: Missouri, Illinois Associated route: I-172
I-73	99.43	160.02	US 220 near Stokesdale, North Carolina	I‑74 and US 220 in Randleman, North Carolina	01997-01-011997	current	North Carolina only; planned extension north and south Associated routes: none
I-74	491.74	791.38	I-80 in Bettendorf, Iowa	US 74/NC 41 near Lumberton, North Carolina	01974-01-011974	current	Serves five states: Iowa, Illinois, Indiana, Ohio, North Carolina Associated routes: I-474
I-75	1786.47	2,875.04	SR 826/SR 916/SR 924 in Miami Lakes, Florida	Canadian border at Sault Ste. Marie, Michigan	01958-01-011958	current	Serves six states: Florida, Georgia, Tennessee, Kentucky, Ohio, Michigan Associated routes: I-175, I-275, I-375, I-475, I-575, I-675
I-76	186.48	300.11	I-70 at Denver, Colorado	I-80 at Big Springs, Nebraska	01975-01-011975	current	Serves two states: Colorado, Nebraska Associated routes: none
I-76	435.66	701.13	I-71 in Westfield Center, Ohio	I-295 at Bellmawr, New Jersey	01964-01-011964	current	Serves three states: Ohio, Pennsylvania, New Jersey Associated routes: I-176, I-276, I-376, I-476, I-676
I-77	610.10	981.86	I-26 in Columbia, South Carolina	I-90 in Cleveland, Ohio	01958-01-011958	current	Serves five states: South Carolina, North Carolina, Virginia, West Virginia, Ohio Associated route: I-277
I-78	146.28	235.41	I-81 at Jonestown, Pennsylvania	Canal Street in New York City	01957-01-011957	current	Serves three states: Pennsylvania, New Jersey, New York Associated routes: I-278, I-478, I-678, I-878
I-79	343.46	552.75	I-77 in Charleston, West Virginia	PA 5 in Erie, Pennsylvania	01967-01-011967	current	Serves two states: West Virginia, Pennsylvania Associated routes: I-279, I-579
I-80	2899.59	4,666.44	US 101 in San Francisco, California	I-95 in Teaneck, New Jersey	01956-01-011956	current	Serves 11 states: California, Nevada, Utah, Wyoming, Nebraska, Iowa, Illinois, Indiana, Ohio, Pennsylvania, New Jersey Associated routes: I-180, I-238, I-280, I-380, I-480, I-580, I-680, I-780, I-880, I-980
I-81	855.02	1,376.02	I-40 in Dandridge, Tennessee	Canadian border at Wellesley Island, New York	01961-01-011961	current	Serves six states: Tennessee, Virginia, West Virginia, Maryland, Pennsylvania, New York Associated routes: I-381, I-481, I-581, I-781
I-82	143.58	231.07	I-90 in Ellensburg, Washington	I-84 in Hermiston, Oregon	01957-01-011957	current	Serves two states: Washington, Oregon Associated route: I-182
I-83	85.03	136.84	President Street and Fayette Street in Baltimore, Maryland	I-81 in Harrisburg, Pennsylvania	01959-01-011959	current	Serves two states: Maryland, Pennsylvania Associated route: I-283
I-84	769.62	1,238.58	I-5 in Portland, Oregon	I-80 in Echo, Utah	01980-01-011980	current	Serves three states: Oregon, Idaho, Utah Associated route: I-184
I-84	232.71	374.51	I-81 in Scranton, Pennsylvania	I-90 in Sturbridge, Massachusetts	01963-01-011963	current	Serves four states: Pennsylvania, New York, Connecticut, Massachusetts Associated routes: I-384, I-684
I-85	666.05	1,071.90	I-65 in Montgomery, Alabama	I-95 in Petersburg, Virginia	01958-01-011958	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-885, I-985; Planned: I-685
I-86	62.85	101.15	I-84 near Declo, Idaho	I-15 in Chubbuck, Idaho	01980-01-011980	current	Idaho only Associated routes: none
I-86	223.39	359.51	I-90 near North East, Pennsylvania	NY 17/NY 79 in Windsor, New York	01999-01-011999	current	Unfinished in New York Serves two states: Pennsylvania, New York Associated routes: none
I-87	12.90	20.76	I-440/US 64/US 264 in Raleigh, North Carolina	US 64/US 264 in Wendell, North Carolina	02017-01-012017	current	North Carolina only; planned northern extension Associated route: I-587 Shortest Interstate highway in contiguous United States
I-87	333.49	536.70	I-278 in New York City	A-15 at Canadian border in Champlain, New York	01957-01-011957	current	New York only Associated routes: I-287, I-587, I-787
I-88	140.60	226.27	I-80/IL 92 in East Moline, Illinois	I-290/IL 110 in Hillside, Illinois	01987-01-011987	current	Illinois only Associated routes: none
I-88	117.75	189.50	I-81 in Binghamton, New York	I-90 in Schenectady, New York	01968-01-011968	current	New York only Associated routes: none
I-89	191.12	307.58	I-93/SR 3A in Bow, New Hampshire	Route 133/Future A-35 at Canadian border in Highgate, Vermont	01960-01-011960	current	Serves two states: New Hampshire, Vermont Associated route: I-189
I-90	3020.44	4,860.93	SR 519/4th Avenue/Edgar Martinez Drive in Seattle, Washington	MA 1A in Boston, Massachusetts	01956-01-011956	current	Serves 13 states: Washington, Idaho, Montana, Wyoming, South Dakota, Minnesota, Wisconsin, Illinois, Indiana, Ohio, Pennsylvania, New York, Massachusetts Associated routes: I-190, I-290, I-390, I-490, I-590, I-690, I-790, I-890, I-990 Longest Interstate highway
I-91	290.37	467.31	I-95 in New Haven, Connecticut	A-55 at Canadian border in Derby Line, Vermont	01958-01-011958	current	Serves three states: Connecticut, Massachusetts, Vermont Associated routes: I-291, I-391, I-691
I-93	189.95	305.69	I-95/US 1 in Canton, Massachusetts	I-91 in St. Johnsbury, Vermont	01957-01-011957	current	Serves three states: Massachusetts, New Hampshire, Vermont Associated routes: I-293, I-393
I-94	1585.20	2,551.13	I-90 in Lockwood, Montana	Highway 402 at Canadian border in Port Huron, Michigan	01956-01-011956	current	Serves seven states: Montana, North Dakota, Minnesota, Wisconsin, Illinois, Indiana, Michigan Associated routes: I-194, I-294, I-394, I-494, I-694, I-794, I-894
I-95	1919.31	3,088.83	US 1 in Miami, Florida	NB 95 at Canadian border in Houlton, Maine	01957-01-011957	current	Serves DC and 15 states: Florida, Georgia, South Carolina, North Carolina, Virginia, Maryland, Delaware, Pennsylvania, New Jersey, New York, Connecticut, Rhode Island, Massachusetts, New Hampshire, Maine Associated routes: I-195, I-295, I-395, I-495, I-595, I-695, I-795, I-895 Longest primary north-south Interstate highway
I-96	192.06	309.09	US 31 in Norton Shores, Michigan	I-75 in Detroit, Michigan	01959-01-011959	current	Michigan only Associated routes: I-196, I-296, I-496, I-696
I-97	17.62	28.36	US 50 in Annapolis, Maryland	I-695/I-895 in Glen Burnie, Maryland	01987-01-011987	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.
I-99	98.34	158.26	I-70/I-76 in Bedford, Pennsylvania	I-86/NY 17 in Painted Post, New York	01998-01-011998	current	Unfinished in Pennsylvania Serves two states: Pennsylvania, New York Associated routes: none
Unbuilt or under construction

Otras jurisdicciones

Además de los 48 estados contiguos, las autopistas interestatales se encuentran en Hawái, Alaska y Puerto Rico. La Administración Federal de Carreteras financia cuatro rutas en Alaska y tres rutas en Puerto Rico bajo el mismo programa que el resto del Sistema de Carreteras Interestatales. Sin embargo, estas rutas no están obligadas a cumplir con los mismos estándares que las rutas continentales:

Las autopistas del Sistema Interestatal en Alaska y Puerto Rico se diseñarán de acuerdo con los estándares geométricos y de construcción que sean adecuados para las actuales y probables demandas futuras de tráfico y las necesidades de la localidad de la carretera.

Hawái

Mapa de las autopistas interestatales de Hawaii (excluidos H-201)

Las autopistas interestatales en la isla de Oʻahu, Hawái, están señalizadas con el escudo de autopista interestatal estándar, con la letra "H-" precedido antes del número. Son rutas de acceso totalmente controlado construidas con los mismos estándares que las carreteras interestatales continentales.

Número	Duración (mi)	Longitud (km)	Extremidades meridionales o occidentales	Terminos septentrionales o orientales	Formado	Eliminado	Notas
H-1	27.16	43.71	Ruta 93 en Kapolei	Ruta 72 en Honolulu	01959-01-011959	corriente	Ruta asociada: H-201
H-2	8.33	13.41	H-1 en Pearl City	Ruta 99 en Wahiawa	01976-01-011976	corriente
H-3	15.32	24.66	H-1/H-201 en Halawa	Marine Corps Base Hawaii	01997-01-011997	corriente

Alaska

Mapa de las autopistas interestatales de Alaska

Las autopistas interestatales de Alaska no están señalizadas como tales, aunque todas tienen números de autopistas estatales que no coinciden con los números de autopistas interestatales.

Número	Duración (mi)	Longitud (km)	Extremidades meridionales o occidentales	Terminos septentrionales o orientales	Formado	Eliminado	Notas
A-1	408.23	656.98	Anclaje	Frontera canadiense en la frontera de Alcan	01976-01-011976	corriente	Glenn Highway, Richardson Highway, Tok Cut-Off, Alaska Highway
A-2	202.18	325.38	Tok	Fairbanks	01976-01-011976	corriente	Alaska Highway, Richardson Carretera
A-3	148.12	238.38	Anclaje	Soldotna	01976-01-011976	corriente	Seward Highway, Sterling Highway
A-4	323.69	520.93	Gateway, cerca de Palmer	Fairbanks	01976-01-011976	corriente	Parks Highway

Puerto Rico

Mapa de las Interestastas en Puerto Rico

Al igual que Alaska, Puerto Rico firma sus carreteras interestatales como rutas territoriales, ya que los números no coinciden con sus designaciones oficiales de carreteras interestatales. Muchas de las rutas del territorio son carreteras de peaje estándar de autopista.

Número	Duración (mi)	Longitud (km)	Extremidades meridionales o occidentales	Terminos septentrionales o orientales	Formado	Eliminado	Notas
PR-1	71.08	114.39	PR-2 en Ponce	PR-2 en San Juan	01953-01-011953	corriente	Sigue a PR-52
PR-2	138.13	222.30	PR-1 en Ponce	PR-3 en San Juan	01953-01-011953	corriente	Follows PR-22
PR-3	40.56	65.27	PR-3 en Humacao	PR-2 en San Juan	01953-01-011953	corriente	Follows PR-66