Highways in the United States

There are three systems of major highways in the United States of America: The Interstate Highway System, the United States Numbered Highway System (also known as U.S. Routes or U.S. Highways), and State Highways/Routes/Roads.

Note that the lengths shown in the tables below are not to scale; the game is set in two different scales – a 'regular' scale (1:20) and a 'city' scale (1:3).

Lengths marked by a dagger (†) do not cover the full route and need to be updated.

Interstate Highways

Interstate shield

The Interstate Highway System is a network of controlled-access highways in the United States, which mean they don't have intersections, traffic signals, or access to property. They are written in the format Interstate X (I-X).

Main Interstates

An example of an Interstate Highway in American Truck Simulator

There is a number system for the main Interstates. Interstate Highways going west-east have even numbers and are numbered south to north (e.g. Interstate 10 is in the southern United States and Interstate 90 is in the northern United States). Interstate Highways going south-north have odd numbers and are numbered west to east (e.g. Interstate 5 is in the western US and Interstate 45 is east of that).

The main Interstate Highways featured in American Truck Simulator are:

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Added	Notes
IS2	52	84	US 83 west of McAllen, Texas	I-69E / US 77 in Harlingen, Texas	Texas expansion	Serves one state: TX
IS5	1,404†	2,261†	San Diego, California	Bellingham, Washington	Base game	Serves three states: CA, OR, WA Associated routes: I-105, I-205, I-405 (OR), I-405 (WA)
IS8	334	538	I-5 in San Diego, California	I-10 in Arizona	Base game	Serves two states: CA, AZ
IS10	1,658	2,688	I-5 in Los Angeles, California	Beaumont, Texas	Base game	Serves four states: CA, AZ, NM, TX
IS11	17	28	US 93 in Nevada	I-515 / US 93 / US 95 in Las Vegas, Nevada	Arizona expansion	Serves one state: NV
IS14	37	60	US 190 east of Lampasas, Texas	I-35 in Belton, Texas	Texas expansion	Serves one state: TX
IS15	927†	1,492†	I-8 in San Diego, California	US 2 in Shelby, Montana	Base game	Serves six states: CA, NV, AZ, UT, ID, MT Associated routes: I-115, I-515
IS17	155	249	Phoenix, Arizona	I-40 in Flagstaff, Arizona	Arizona expansion	Serves one state: AZ
IS19	56	90	Nogales, Arizona	I-10 in Tucson, Arizona	Arizona expansion	Serves one state: AZ
IS20	604	972	I-10 in Scroggins Draw, Texas	US 59 in Marshall, Texas	Texas expansion	Serves one state: TX
IS25	1,062	1,709	I-10 / US 180 in Las Cruces, New Mexico	I-90 / US 87 in Buffalo, Wyoming	New Mexico expansion	Serves three states: NM, CO, WY
IS27	135	217	US 87 in Lubbock, Texas	I-40 / US 60 / US 87 / US 287 in Amarillo, Texas	Texas expansion	Serves one state: TX
IS30	72†	117†	I-20 west of Fort Worth, Texas	I-369 / US 59 in Texarkana, Texas	Texas expansion	Serves one state: TX
IS35	710†	1,142†	US 83 in Laredo, Texas	I-70 / US 24 / US 40 in Kansas City, Missouri	Texas expansion	Serves four states: TX, OK, KS, MO Associated routes: I-35E, I-35W, I-135, I-235, I-335, I-635
IS37	162	261	US 181 in Corpus Christi, Texas	I-35 in San Antonio, Texas	Texas expansion	Serves one state: TX
IS40	1,343†	2,161†	I-15 in Barstow, California	US 59 in Sallisaw, Oklahoma	Base game	Serves five states: CA, AZ, NM, TX, OK
IS44	234†	378†	US 277 / US 281 / US 287 in Wichita Falls, Texas	US 59 / US 60 / US 69 in Miami, Oklahoma	Texas expansion	Serves two states: TX, OK Associated routes: I-244
IS45	305	491	SH 87 in Galveston, Texas	I-30 / US 67 / US 75 in Dallas, Texas	Texas expansion	Serves one state: TX
IS69	86	139	US 59 southwest of Houston, Texas	US 59 north of Humble, Texas	Texas expansion	Serves one state: TX Associated routes: I-69E, I-69W, I-369
IS70	711†	1,144†	I-15 in Utah	I-35 in Kansas City, Missouri	Utah expansion	Serves four states: UT, CO, KS, MO Associated routes: I-470
IS76	184	296	I-70 / US 6 / US 40 in Denver, Colorado	US 385 in Julesburg, Colorado	Colorado expansion	Serves one state: CO
IS80	790†	1,271†	San Francisco, California	I-180 / US 85 in Cheyenne, Wyoming	Base game	Serves four states: CA, NV, UT, WY Associated routes: I-180, I-580 (CA), I-580 (NV)
IS82	122	196	I-90 / US 97 in Ellensburg, Washington	I-84 / US 30 / US 395 in Oregon	Washington expansion	Serves two states: WA, OR Associated routes: I-182
IS84	713	1,147	I-5 / US 30 in Portland, Oregon	I-80 / US 189 in Utah	Oregon expansion	Serves three states: OR, ID, UT
IS86	61	99	I-84 / US 30 in Idaho	I-15 in Pocatello, Idaho	Idaho expansion	Serves one state: ID
IS90	1,172	1,886	I-5 in Seattle, Washington	US 14 / US 16 in Moorcroft, Wyoming	Washington expansion	Serves four states: WA, ID, MT, WY
IS94			I-90 / US 87 / US 212 in Billings, Montana	Glendive, Montana	Montana expansion	Serves one state: MT

Auxiliary Interstates

Several auxillary Interstates are also featured in American Truck Simulator, which are numbered with a number in front of the originating Interstate. Odd means that it's a spur and even means that it loops back.

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Added	Notes
IS105	25	40	OR 99 / OR 126 in Eugene, Oregon	I-5 / OR 126 in Springfield, Oregon	Oregon expansion	Serves one state: OR
IS115	7	11	I-15 / I-90 in Butte, Montana	Butte, Montana	Montana expansion	Serves one state: MT
IS135			I-35 / US 81 in Wichita, Kansas	I-70 / US 81 in Salina, Kansas	Kansas expansion	Serves one state: KS
IS180	1	2	I-80 / US 85 in Cheyenne, Wyoming	US 30 / US 85 in Cheyenne, Wyoming	Wyoming expansion	Serves one state: WY
IS182	22	36	I-82 / US 12 in Washington	US 12 / US 395 / SR 397 in Pasco, Washington	Washington expansion	Serves one state: WA
IS205	17	27	I-84 / US 30 in Portland, Oregon	SR 14 in Vancouver, Washington	Oregon expansion	Serves two states: OR, WA
IS235	4	6	I-35 / US 62 / US 77 in Oklahoma City, Oklahoma	I-40 / US 270 in Oklahoma City, Oklahoma	Oklahoma expansion	Serves one state: OK
IS244	59	96	I-44 / US 75 / SH-66 in Tulsa, Oklahoma	I-44 / US 412 / SH-66 in Tulsa, Oklahoma	Oklahoma expansion	Serves one state: OK
IS335			I-35 in Emporia, Kansas	I-470 in Topeka, Kansas	Kansas expansion	Serves one state: KS
IS369	5	9	US 59 / SH 93 / Loop 151 in Texarkana, Texas	I-30 / US 59 in Texarkana, Texas	Texas expansion v1.48	Serves one state: TX
IS405	44	70	I-5 in Portland, Oregon	I-5 / US 30 in Portland, Oregon	Oregon expansion	Serves one state: OR
IS405	21	33	I-5 and SR 518 in Seattle, Washington	I-90 in Bellevue, Washington	Washington expansion	Serves one state: WA
IS470			I-70 / US 75 in Topeka, Kansas	I-70 in Topeka, Kansas	Kansas expansion	Serves one state: KS
IS515	23	37	I-11 / US 93 / US 95 in Las Vegas, Nevada	I-15 / US 93 / US 95 in Las Vegas, Nevada	Base game v1.38	Serves one state: NV
IS580	118†	189†	US 101 in San Rafael, California	I-5 in California	Base game	Serves one state: CA
IS580	78	125	US 395 in Carson City, Nevada	I-80 / US 395 in Reno, Nevada	Base game	Serves one state: NV
IS635			I-35 / US 69 in Overland Park, Kansas	K-5 in Kansas City, Kansas	Kansas expansion	Serves one state: KS

Suffixed Interstates

Several suffixed Interstates are also featured in American Truck Simulator, which are numbered with a letter suffix at the end of the originating Interstate. Most of them usually split the main Interstate into two branches running parallel to each other, connecting at least two cities with the same number of the originating Interstate.

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Added	Notes
IS35E	99	159	I-35 / I-35W in Hillsboro, Texas	I-35 / I-35W in Denton, Texas	Texas expansion	Serves one state: TX
IS35W	90	146	I-35 / I-35E in Hillsboro, Texas	I-35 / I-35E in Denton, Texas	Texas expansion	Serves one state: TX
IS69E	78	126	SH 4 in Brownsville, Texas; US 77 west of Corpus Christi, Texas	US 77 north of Brownsville, Texas; I-37 in Corpus Christi, Texas	Texas expansion	Serves one state: TX
IS69W	18	29	FM 1472 / Loop 20 in Laredo, Texas	US 59 / Loop 20 in Laredo, Texas	Texas expansion	Serves one state: TX

Business Interstates

Business Loop shield

Some Interstates also have business loops. They are short roads that connect the Interstate exits with other major highways and the central parts of a city. They are written in the format Business Loop X or Interstate X Business and are abbreviated I-X BL.

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Added	Notes
BU10	4	7	I-10 in San Simon, Arizona	I-10 in San Simon, Arizona	Arizona expansion	Serves one state: AZ
BU10	3	5	I-10 in Van Horn, Texas	I-10 in Van Horn, Texas	Texas expansion	Serves one state: TX
BU10	30	48	I-10 / US 67 in Fort Stockton, Texas	I-10 / US 67 / US 385 in Fort Stockton, Texas	Texas expansion	Serves one state: TX
BU15			I-15 / SR-130 in Cedar City, Utah	I-15 / SR-130 in Cedar City, Utah	Utah expansion	Serves one state: UT
BU15			I-15 / US 30 / US 91 in Pocatello, Idaho	US 30 / US 91 in Pocatello, Idaho	Idaho expansion	Serves one state: ID
BU15			US 26 in Idaho Falls, Idaho	I-15 / US 20 in Idaho Falls, Idaho	Idaho expansion	Serves one state: ID
BU20	2	3	East of Abilene, Texas	I-20 east of Abilene, Texas	Texas expansion	Serves one state: TX
BU25	18	29	I-25 in Socorro, New Mexico	I-25 / US 60 in Socorro, New Mexico	New Mexico expansion	Serves one state: NM
BU25	10	16	I-25 in Raton, New Mexico	I-25 in Raton, New Mexico	New Mexico expansion	Serves one state: NM
BU25	13	21	I-25 / US 87 in Cheyenne, Wyoming	I-180 / US 30 / US 85 in Cheyenne, Wyoming	Wyoming expansion	Serves one state: WY
BU25	1	2	I-25 / US 87 in Wheatland, Wyoming	I-25 / US 87 in Wheatland, Wyoming	Wyoming expansion	Serves one state: WY
BU25	4	7	WYO 59 / WYO 94 in Douglas, Wyoming	I-25 / US 20 / US 26 / US 87 in Douglas, Wyoming	Wyoming expansion	Serves one state: WY
BU25	2	4	Casper, Wyoming	I-25 / US 20 / US 26 / US 87 in Casper, Wyoming	Wyoming expansion	Serves one state: WY
BU40	9	14	I-40 in Arizona	SR 66 in Seligman, Arizona	Arizona expansion	Serves one state: AZ
BU40	6	10	I-17 / I-40 in Flagstaff, Arizona	I-40 / US 180 in Flagstaff, Arizona	Arizona expansion	Serves one state: AZ
BU40	5	9	Holbrook, Arizona	I-40 / US 180 / SR 77 in Holbrook, Arizona	Arizona expansion	Serves one state: AZ
BU40	8	13	Gallup, New Mexico	I-40 in Gallup, New Mexico	New Mexico expansion	Serves one state: NM
BU40	18	29	I-40 / US 84 in Santa Rosa, New Mexico	I-40 / US 54 / US 84 in Santa Rosa, New Mexico	New Mexico expansion	Serves one state: NM
BU40	6	10	Tucumcari, New Mexico	I-40 in Tucumcari, New Mexico	New Mexico expansion	Serves one state: NM
BU40	10	17	Historic US 66 in Glenrio, Texas	East of Glenrio, Texas	Texas expansion	Serves one state: TX
BU40	13	21	I-40 in Adrian, Texas	I-40 in Adrian, Texas	Texas expansion	Serves one state: TX
BU40			I-40 in Shamrock, Texas	I-40 in Shamrock, Texas	Texas expansion	Serves one state: TX
BU40			I-40 in Clinton, Oklahoma	US 183 in Clinton, Oklahoma	Oklahoma expansion	Serves one state: OK
BU40			I-40 / US 59 in Sallisaw, Oklahoma	US 59 in Sallisaw, Oklahoma	Oklahoma expansion	Serves one state: OK
BU70			I-70 / US 6 / US 50 in Grand Junction, Colorado	US 50 in Grand Junction, Colorado	Colorado expansion	Serves one state: CO
BU70			I-70 / US 40 / US 287 in Limon, Colorado	I-70 / US 24 / US 40 / US 287 in Colorado	Colorado expansion	Serves one state: CO
BU70			I-70 / US 385 in Burlington, Colorado	US 24 and US 385 in Burlington, Colorado	Colorado expansion	Serves one state: CO
BU76			Sterling, Colorado	I-76 / US 6 in Sterling, Colorado	Colorado expansion	Serves one state: CO
BU80			I-80 / US 50 in Sacramento, California	SR 16 in Sacramento, California	Base game v1.44	Serves one state: CA
BU80			I-80 / US 189 in Evanston, Wyoming	I-80 / US 189 in Evanston, Wyoming	Wyoming expansion	Serves one state: WY
BU80			I-80 / US 191 in Rock Springs, Wyoming	Rock Springs, Wyoming	Wyoming expansion	Serves one state: WY
BU80			I-80 / US 30 in Rawlins, Wyoming	I-80 / US 30 / WYO 76 in Rawlins, Wyoming	Wyoming expansion	Serves one state: WY
BU80			I-80 in Laramie, Wyoming	I-80 / US 30 in Laramie, Wyoming	Wyoming expansion	Serves one state: WY
BU80			WYO 222 in Cheyenne, Wyoming	I-180 / US 30 / US 85 in Cheyenne, Wyoming	Wyoming expansion	Serves one state: WY
BU84			SH-55 in Nampa, Idaho	I-84 / US 30 in Nampa, Idaho	Idaho expansion	Serves one state: ID
BU84			SH-51 in Mountain Home, Idaho	SH-51 in Mountain Home, Idaho	Idaho expansion	Serves one state: ID
BU90	13	21	I-90 / US 14 / US 87 / WYO 338 in Sheridan, Wyoming	I-90 / US 14 / US 87 in Sheridan, Wyoming	Wyoming expansion	Serves one state: WY
BU90			I-90 / WYO 50 in Gillette, Wyoming	I-90 / US 14 / US 16 / WYO 51 in Gillette, Wyoming	Wyoming expansion	Serves one state: WY
BU90			US 14 and US 16 in Moorcroft, Wyoming	I-90 in Moorcroft, Wyoming	Wyoming expansion	Serves one state: WY

US Highways

US Highway shield

The US Highway System is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. Unlike Interstate Highways, US Highways are generally smaller roads that contain grade-level intersections, traffic signals, and access to property. However, many have controlled-access sections, either along part of or the entirety of their route. They are written in the format U.S. Route XX (US XX).

Main US Highways

An example of an US Highway in American Truck Simulator

The numbering system for US Highways is the opposite of that for the Interstates. East-west routes have even numbers and are numbered north to south. North-south routes have odd numbers and are numbered east to west.

The main US Highways featured in American Truck Simulator are:

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Added	Notes
US2	297†	478†	I-5 / SR 529 in Everett, Washington	Culbertson, Montana	Washington expansion	Serves three states: WA, ID, MT
US6			US 395 in Bishop, California	Sterling, Colorado	Base game	Serves four states: CA, NV, UT, CO
US12	232†	373†	US 101 in Aberdeen, Washington	I-94 in Montana	Washington expansion	Serves three states: WA, ID, MT
US14			US 16 / US 20 in Yellowstone National Park, Wyoming	Devils Tower, Wyoming	Wyoming expansion	Serves one state: WY
US16			US 14 / US 20 in Yellowstone National Park, Wyoming	US 14 in Moorcroft, Wyoming	Wyoming expansion	Serves one state: WY
US18			I-25 / US 20 / US 26 / US 87 in Orin, Wyoming	US 20 in Orin, Wyoming	Wyoming expansion	Serves one state: WY
US20			US 101 in Newport, Oregon	US 18 in Orin, Wyoming	Oregon expansion	Serves four states: OR, ID, MT, WY
US24			I-70 / US 6 in Colorado	I-35 in Kansas City, Missouri	Colorado expansion	Serves three states: CO, KS, MO
US26			US 395 in Mount Vernon, Oregon	Dwyer Junction, Wyoming	Oregon expansion	Serves three states: OR, ID, WY
US30			US 101 in Astoria, Oregon	I-180 / I-80 BL / US 85 in Cheyenne, Wyoming	Oregon expansion	Serves three states: OR, ID, WY
US34			US 40 in Colorado	US 385 in Wray, Colorado	Colorado expansion	Serves one state: CO
US36			US 83 in Oberlin, Kansas	Fairview, Kansas	Kansas expansion	Serves one state: KS
US40			I-80 / US 189 in Silver Summit, Utah	I-35 in Kansas City, Missouri	Utah expansion	Serves three states: UT, CO, MO
US50			I-80 in Sacramento, California	Emporia, Kansas	Base game	Serves five states: CA, NV, UT, CO, KS
US54	436†	703†	I-10 / US 180 in El Paso, Texas	US 69 in Fort Scott, Kansas	New Mexico expansion	Serves four states: TX, NM, OK, KS
US56			US 64 / US 87 / US 412 in Clayton, New Mexico	US 64 / US 412 / SH-3 northeast of Boise City, Oklahoma	New Mexico expansion v1.48	Serves two states: NM, OK
US57	30	49	US 83 in La Pryor, Texas	I-35 southwest of San Antonio, Texas	Texas expansion	Serves one state: TX
US59	601†	967†	I-69W / Loop 20 / FM 1472 in Laredo, Texas	I-44 / US 60 / US 69 in Miami, Oklahoma	Texas expansion	Serves two states: TX, OK
US60	644†	1,037†	US 93 in Wickenburg, Arizona	Tonkawa, Oklahoma	Arizona expansion	Serves four states: AZ, NM, TX, OK
US62	352†	566†	US 180 in El Paso, Texas	I-44 in Lawton, Oklahoma	New Mexico expansion	Serves three states: NM, TX, OK
US64	389†	626†	US 160 in Teec Nos Pos, Arizona	US 54 in Guymon, Oklahoma	New Mexico expansion	Serves three states: AZ, NM, OK
US67	507†	816†	US 90 in Marfa, Texas	I-30 / FM 275 in Cumby, Texas	Texas expansion	Serves one state: TX
US69	207†	334†	I-10 / US 90 / US 96 / US 287 in Beaumont, Texas	I-35 / I-635 in Overland Park, Kansas	Texas expansion	Serves three states: TX, OK, KS
US70	407†	665†	US 60 / SR 77 in Globe, Arizona	US 259 in Broken Bow, Oklahoma	New Mexico expansion	Serves four states: AZ, NM, TX, OK
US75			I-30 / I-45 / US 67 in Dallas, Texas	US 36 in Fairview, Kansas	Texas expansion v1.48	Serves three states: TX, OK, KS
US77	478†	769†	I-69E / US 83 / SH 4 in Brownsville, Texas	SH-142 in Ardmore, Oklahoma	Texas expansion	Serves two states: TX, OK
US80	33	54	FM 1801 north of Lindale, Texas	Longview, Texas	Texas expansion	Serves one state: TX
US81			US 70 in Waurika, Oklahoma	US 36 in Belleville, Kansas	Oklahoma expansion	Serves two states: OK, KS
US82	528†	851†	US 54 / US 70 in Alamogordo, New Mexico	New Boston, Texas	New Mexico expansion	Serves two states: NM, TX
US83	746†	1,201†	I-69E / US 77 / SH 4 in Brownsville, Texas	US 36 in Oberlin, Kansas	Texas expansion	Serves three states: TX, OK, KS
US84	458	737	US 160 in Pagosa Springs, Colorado	US 59 / US 96 in Tenaha, Texas	New Mexico expansion	Serves three states: CO, NM, TX
US85			I-10 / US 180 in El Paso, Texas	I-180 / I-25 BL / I-80 BL / US 30 in Cheyenne, Wyoming	Wyoming expansion	Serves four state: TX, NM, CO, WY
US87	1,767	2,844	SH 35 in Port Lavaca, Texas	US 2 in Havre, Montana	Wyoming expansion	Serves four states: TX, NM, WY, MT
US89			US 180 in Flagstaff, Arizona	St. Mary, Montana	Arizona expansion	Serves five states: AZ, UT, ID, WY, MT
US90	718	1,156	I-10 BL / SH 54 in Van Horn, Texas	Beaumont, Texas	Texas expansion	Serves one state: TX
US91			I-15 / I-84 in Brigham City, Utah	US 30 in Pocatello, Idaho	Utah expansion	Serves two states: UT, ID
US93	1,018†	1,638†	US 60 in Wickenburg, Arizona	US 2 in Kalispell, Montana	Base game	Serves four states: NV, AZ, ID, MT
US95	753		Yuma, Arizona	US 2 in Threemile Corner, Idaho	Base game	Serves five states: AZ, CA, NV, OR, ID
US96	158	254	I-10 / US 69 / US 90 / US 287 in Beaumont, Texas	US 59 / US 84 in Tenaha, Texas	Texas expansion	Serves one state: TX
US97	593	954	I-5 in Weed, California	SR 20 in Tonasket, Washington	Oregon expansion	Serves three states: CA, OR, WA
US101	1,480†	2,382†	I-5 in Los Angeles, California	I-5 in Olympia, Washington	Base game	Serves three states: CA, OR, WA
US160			US 89 in Arizona	I-25 / US 350 in Trinidad, Colorado	Arizona expansion	Serves three states: AZ, NM, CO
US163			US 160 in Kayenta, Arizona	US 191 in Bluff, Utah	Utah expansion	Serves two states: AZ, UT
US180	573	922	SR 64 in Valle, Arizona	US 87 in Lamesa, Texas	Arizona expansion	Serves three states: AZ, NM, TX
US181	49	79	I-37 / SH 35 in Corpus Christi, Texas	SH 35 in Gregory, Texas	Texas expansion	Serves one state: TX
US183	76†	123†	US 190 in Lampasas, Texas	US 36 in Phillipsburg, Kansas	Texas expansion	Serves three states: TX, OK, KS
US189			SR-52 in Provo, Utah	US 26 / US 89 / US 191 in Jackson, Wyoming	Utah expansion	Serves two states: UT, WY
US190	262	423	I-10 / FM 305 east of Fort Stockton, Texas	Jasper, Texas	Texas expansion	Serves one state: TX
US191			US 70 in Arizona	US 2 in Malta, Montana	Arizona expansion	Serves four states: AZ, UT, WY, MT
US197			US 97 in Oregon	I-84 / US 30 in The Dalles, Oregon	Oregon expansion	Serves one state: OR
US199	135	218	US 101 in Crescent City, California	I-5 in Grants Pass, Oregon	Oregon expansion	Serves two states: CA, OR
US212			US 310 in Rockvale, Montana	MT 59 in Montana	Montana expansion	Serves one state: MT
US259	4†	7†	I-20 / SH 149 in Longview, Texas	US 59 / US 271 in Oklahoma	Texas expansion	Serves two states: TX, OK
US270			US 183 / SH-3 in Oklahoma	US 83 / US 412 / SH-3 east of Guymon, Oklahoma	Oklahoma expansion	Serves one state: OK
US271			US 82 in Paris, Texas	US 59 / US 259 in Oklahoma	Texas expansion v1.48	Serves two states: TX, OK
US277	401†	645†	Loop 517 in Carrizo Springs, Texas	Lawton, Oklahoma	Texas expansion	Serves two states: TX, OK
US281	111†	178†	I-37 / US 59 northwest of Corpus Christi, Texas	Smith Center, Kansas	Texas expansion	Serves three states: TX, OK, KS
US285	630	1,013	US 90 in Sanderson, Texas	I-25 / US 87 / SH 30 in Denver, Colorado	New Mexico expansion	Serves three states: TX, NM, CO
US287	1,083†	1,743†	I-10 / US 69 / US 90 / US 96 in Beaumont, Texas	I-15 / US 12 in Helena, Montana	Colorado expansion	Serves five states: TX, OK, CO, WY, MT
US290	152	245	I-10 east of Junction, Texas	I-35 / FM 734 in Austin, Texas	Texas expansion	Serves one state: TX
US310			US 14 / US 16 / US 20 / WYO 789 in Wyoming	I-90 / US 212 in Laurel, Montana	Montana expansion	Serves two states: WY, MT
US350			I-25 / US 160 in Trinidad, Colorado	US 50 in La Junta, Colorado	Colorado expansion	Serves one state: CO
US377	64	104	US 67 / US 84 / US 183 in Early, Texas	US 67 in Stephenville, Texas	Texas expansion	Serves one state: TX
US380	154	248	I-25 in New Mexico	US 70 / US 285 in Roswell, New Mexico	New Mexico expansion	Serves one state: NM
US385	385†	620†	I-10 BL / US 285 in Fort Stockton, Texas	I-76 in Julesburg, Colorado	Colorado expansion	Serves three states: TX, OK, CO
US395	1,172	1,886	SR 14 / SR 58 in California	SR 20 in Barney's Junction, Washington	Base game	Serves four states: CA, NV, OR, WA
US400			US 50 / US 385 in Granada, Colorado	US 69 in Pittsburg, Kansas	Kansas expansion	Serves two states: CO, KS
US412			US 56 / US 64 / US 87 in Clayton, New Mexico	US 69 in Chouteau, Oklahoma	New Mexico expansion v1.48	Serves two states: NM, OK
US491	86	138	I-40 in Gallup, New Mexico	US 191 in Monticello, Utah	New Mexico expansion	Serves three states: NM, CO, UT
US550	145	234	I-25 in Albuquerque, New Mexico	US 50 in Montrose, Colorado	New Mexico expansion v1.32	Serves two states: NM, CO
US730	1	2	Wallula Junction, Washington	US 12 in Wallula Junction, Washington	Idaho expansion	Serves one state: WA

Special US Routes

Some US Highways have separate routes correlated with their number, which serve to provide an alternate route to the main "parent" route. Each type of special route possesses generally defined characteristics and has a defined relationship with its parent route.

Business Routes

Business Route shield

These are by far the most common special route of the US Highway System. Business routes connect the parent route to the city center, while the parent route goes around. These routes are generally signed using a "Bus" or "Business" plate above the parent route's shield. They are written in the format US XX Business (US XX Bus.).

Shield	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Added	Notes
USBUS6			US 6 / US 191 / UT-55 in Price, Utah	US 6 / US 191 / UT-55 in Price, Utah	Utah expansion	Serves one state: UT
USBUS14	13	21	I-90 / US 14 / US 87 in Sheridan, Wyoming	I-90 / US 14 / US 87 in Sheridan, Wyoming	Wyoming expansion	Serves one state: WY
USBUS20			US 20 / US 26 in Casper, Wyoming	I-25 / US 20 / US 26 in Casper, Wyoming	Wyoming expansion	Serves one state: WY
USBUS26			US 20 / US 26 in Casper, Wyoming	I-25 / US 20 / US 26 in Casper, Wyoming	Wyoming expansion	Serves one state: WY
USBUS30			I-80 / US 30 in Rock Springs, Wyoming	Rock Springs, Wyoming	Wyoming expansion	Serves one state: WY
USBUS30			I-80 / US 30 / WYO 789 in Rawlins, Wyoming	I-80 / US 30 / US 287 in Rawlins, Wyoming	Wyoming expansion	Serves one state: WY
	1	2	Tucumcari, New Mexico	US 54 in Tucumcari, New Mexico	New Mexico expansion	Serves one state: NM
USBUS59	11	17	US 59 in Lufkin, Texas	US 59 in Lufkin, Texas	Texas expansion	Serves one state: TX
USBUS64			US 64 in Farmington, New Mexico	US 64 in Farmington, New Mexico	New Mexico expansion	Serves one state: NM
USBUS87	18	29	US 87 in Big Spring, Texas	I-20 / US 87 in Big Spring, Texas	Texas expansion	Serves one state: TX
USBUS87	<1	1	US 54 in Dalhart, Texas	US 54 / US 87 / US 385 in Dalhart, Texas	Texas expansion	Serves one state: TX
USBUS87	13	21	I-25 / US 87 / WYO 220 in Cheyenne, Wyoming	I-180 / I-80 BL / US 30 / US 85 in Cheyenne, Wyoming	Wyoming expansion	Serves one state: WY
USBUS87	1	2	I-25 / US 87 in Wheatland, Wyoming	I-25 / US 87 in Wheatland, Wyoming	Wyoming expansion	Serves one state: WY
USBUS87	4	7	WYO 59 / WYO 94 in Douglas, Wyoming	I-25 / US 20 / US 26 / US 87 in Douglas, Wyoming	Wyoming expansion	Serves one state: WY
USBUS87	2	4	Casper, Wyoming	I-25 / US 20 / US 26 / US 87 / US 20 Bus. / US 26 Bus. in Casper, Wyoming	Wyoming expansion	Serves one state: WY
USBUS87	13	21	I-90 / US 14 / US 87 in Sheridan, Wyoming	I-90 / US 14 / US 87 in Sheridan, Wyoming	Wyoming expansion	Serves one state: WY
USBUS96	1	2	Buna, Texas	US 96 in Buna, Texas	Texas expansion	Serves one state: TX
USBUS101			Astoria, Oregon	US 101 in Astoria, Oregon	Oregon expansion	Serves one state: OR
USBUS189			I-80 / US 189 in Evanston, Wyoming	I-80 / US 189 in Evanston, Wyoming	Wyoming expansion	Serves one state: WY
USBUS395			I-580 / US 50 / US 395 in Carson City, Nevada	I-580 / US 50 / US 395 in Carson City, Nevada	Base game v1.32	Serves one state: NV

Bypasses

Bypass shield

Bypasses do the exact opposite of business routes; they bypass a city center when a parent route goes into it. These routes are often labelled using a "By-Pass" plate above the parent route's shield. They are written in the format US XX Bypass or US XX By-Pass and are abbreviated US XX Byp..

Shield	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Added	Notes
USBYP87	10	17	US 87 / US 89 / MT 3 / MT 200 in Great Falls, Montana	US 87 in Great Falls, Montana	Montana expansion	Serves one state: MT
USBYP287	3	4	I-80 BL / US 287 / US 30 Bus. in Rawlins, Wyoming	US 287 / WYO 789 in Rawlins, Wyoming	Wyoming expansion	Serves one state: WY

Truck Routes

Truck Route shield (Truck plate)

Truck routes play a similar role to bypasses, but they divert through truck traffic away from population centers. These routes are often labeled using a "Truck" plate above the parent route's shield and are written in the format US XX Truck.

Shield	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Added	Notes
USTRUCK70	29	47	US 70 / US 380 in Roswell, New Mexico	US 70 / US 285 in Roswell, New Mexico	New Mexico expansion	Serves one state: NM
USTRUCK285	29	47	US 70 / US 380 in Roswell, New Mexico	US 70 / US 285 in Roswell, New Mexico	New Mexico expansion	Serves one state: NM

Alternate Routes

Alternate Route shield (Alt. plate)

Alternate Route shield ("A" Suffix)

Alternate routes are roads that follow a different alignment to the parent route, but still take a generally parallel alignment. These routes are often labelled using an "Alternate" or "Alt." plate above the shield for the parent route, or by displaying an "A" suffix after the parent route's number on the shield. They are written in the format US XX Alternate (US XX Alt.).

Shield	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Added	Notes
USALT14			US 14 / US 16 / US 20 / WYO 120 in Cody, Wyoming	US 14 in Burgess Junction, Wyoming	Montana expansion	Serves one state: WY
US89A	22	35	SR 389 in Fredonia, Arizona	US 89 in Kanab, Utah	Utah expansion	Technically functioned as an "auxiliary" route, not an alternate route; serves two states: AZ, UT
USALT93			US 93 in Lages Junction, Nevada	I-80 / US 93 in Wells, Nevada	Utah expansion	Serves one state: NV

State Highways

States in the US also have their own highway systems:

State	Highway designation	Format	Shield
Arkansas	Arkansas State Highways	Highway X (AR X)
Arizona	Arizona State Routes	State Route X (SR X)
California	California State Highways	State Route X (SR X)
Colorado	Colorado State Highways	State Highway X (SH X)
Idaho	Idaho State Highways	State Highway X (SH-X)
Kansas	Kansas State Highways	K-X
Montana	Montana State Highways	Montana Highway X (MT X)
Nebraska	Nebraska State Highways	Nebraska Highway X (N-X)
Nevada	Nevada State Routes	State Route X (SR X)
New Mexico	New Mexico State Roads	State Road X (NM X)
Oklahoma	Oklahoma State Highways	State Highway X (SH-X)
Oregon	Oregon State Highways	Oregon Route X (OR X)
Texas	Texas State Highways	State Highway X (SH X)
Utah	Utah State Routes	State Route X (SR-X)
Washington	Washington State Routes	State Route X (SR X)
Wyoming	Wyoming State Highways	Wyoming Highway X (WYO X)

Secondary Highways

Some states include a secondary highway system to supplement the main one:

State	Highway designation	Format	Shield
Montana	Montana Secondary Highways	Secondary Highway X (S-X)
Nebraska	Nebraska Link Highways	Link L-XY (L-XY)
Nebraska	Nebraska Spur Highways	Spur S-XY (S-XY)
Texas	Texas State Highway Loops	Loop X
Texas	Texas State Highway Spurs	Spur X
Texas	Farm to Market Roads	Farm to Market Road X (FM X)