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Revision as of 01:26, 19 August 2007

This is a list of auxiliary (three-digit) Interstate Highway designations in the United States. They are sorted in the following order:

  1. numerically by the primary Interstate Highway (one or two digits)
  2. alphabetically by the state of the auxiliary Interstate
  3. numerically by the auxiliary Interstate itself
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate H-1

Hawaii

I-H-201 4.10 mi (6.60 km) H-1 in Halawa H-1 in Honolulu
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 5

California

I-105 17.32 mi (27.87 km) CA-1 in El Segundo I-605 in Norwalk
I-205 12.97 mi (20.87 km) I-580 near Tracy I-5 near Tracy
I-305 8.44 mi (13.58 km) I-80 in West Sacramento I-80 BUS/US 50/CA-99 in Sacramento
I-405 72.15 mi (116.11 km) I-5 in Irvine I-5 in Mission Hills
I-505 32.98 mi (53.08 km) I-80 in Vacaville I-5 in Dunnigan
I-605 27.40 mi (44.10 km) I-405 in Seal Beach I-210 in Irwindale
I-805 28.02 mi (45.09 km) I-5 in San Diego I-5 in San Diego
I-905 Proposed auxiliary route to connect to the Mexican border in San Diego

Oregon

I-105 3.49 mi (5.62 km) OR 99 in Eugene I-5 in Springfield
I-205 36.64 mi (58.97 km) I-5 in Tualatin I-5 in Salmon Creek, WA
I-405 3.53 mi (5.68 km) I-5 in Portland I-5 in Portland

Washington

I-205 36.64 mi (58.97 km) I-5 in Tualatin, OR I-5 in Salmon Creek
I-405 30.30 mi (48.76 km) I-5/WA 518 in Tukwila I-5/WA 525 in Lynnwood
I-605 proposed to bypass Seattle
I-705 1.50 mi (2.41 km) I-5/WA 7 in Tacoma Schuster Parkway in Tacoma
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 10

California

I-110 20.43 mi (32.88 km) CA-47 in San Pedro I-10/CA-110 in Los Angeles
I-210 48.52 mi (78.09 km)[2] I-5 in the San Fernando Valley CA-57/CA-210 in Glendora
I-710 19.66 mi (31.64 km) Terminal Island in Long Beach Valley Boulevard in Alhambra

Florida

I-110 6.94 mi (11.17 km)
US 98 BUS in Pensacola 		I-10 near Pensacola

Louisiana

I-110 8.89 mi (14.31 km) I-10 in Baton Rouge US 61 in Baton Rouge
I-210 12.40 mi (19.96 km) I-10 near Sulphur I-10 in Lake Charles
I-310 11.25 mi (18.11 km) US 90 in Boutte I-10 near Kenner
I-510 5.10 mi (8.21 km) LA 47 in New Orleans I-10 in New Orleans
I-610 4.52 mi (7.27 km) I-10 at the Orleans-Jefferson Parish line I-10 in New Orleans

I-910 		9.70 mi (15.61 km)
US 90 BUS in Marrero 		I-10 in New Orleans

Mississippi

I-110 4.10 mi (6.60 km) US 90 in Biloxi I-10 in D'Iberville

Texas

I-110 0.92 mi (1.48 km) U.S.-Mexico border in El Paso I-10 in El Paso
I-410 49.49 mi (79.65 km) Beltway around San Antonio
I-610 37.97 mi (61.11 km) Beltway around Houston
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 15

California

I-215 54.50 mi (87.71 km) I-15 in Murrieta I-15 in Devore

Montana

I-115 1.19 mi (1.92 km) I-15/I-90 in Butte Iron Street in Butte
I-315 0.83 mi (1.34 km) I-15 in Great Falls I-15 BUS/US 89 in Great Falls

Nevada

I-215 2.417 mi (3.890 km)[3] County Highway 215 near North Las Vegas I-515/US 93/US 95/NV 564 in Henderson
I-515 20.54 mi (33.06 km) US 93/US 95 in Henderson I-15/US 93/US 95 in Las Vegas

Utah

I-215 29.02 mi (46.70 km) I-80 in Salt Lake City I-15 in North Salt Lake
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 16

Georgia

I-516 6.49 mi (10.44 km) GA 21/GA 204 in Savannah GA 21 in Garden City
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 20

Georgia

I-520 17.48 mi (28.13 km)[4] I-20 in Augusta US 1 in North Augusta, SC

Louisiana

I-220 17.62 mi (28.36 km) I-20 in Shreveport I-20 in Bossier City

Mississippi

I-220 12.01 mi (19.33 km) I-20 in Jackson I-55 in Ridgeland

South Carolina

I-520 17.48 mi (28.13 km)[4] I-20 in Augusta, GA US 1 in North Augusta

Texas

I-820 35.17 mi (56.60 km) Beltway around Fort Worth
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 24

Tennessee

I-124 1.97 mi (3.17 km) I-24 in Chattanooga US 27 in Chattanooga
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 25

Colorado

I-225 12.00 mi (19.31 km) I-25 in Aurora I-70 in Aurora
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 26

South Carolina

I-126 3.68 mi (5.92 km) I-26 in Columbia US 76/US 21/US 176/US 321 in Columbia
I-526 19.26 mi (31.00 km) I-526 BUS/US 17 in Mount Pleasant US 17 in Charleston
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 29

Iowa-Nebraska

I-129 3.48 mi (5.60 km) US 77/20/75 in South Sioux City, NE I-29/US 20/75 in Sioux City, IA

Missouri

I-229 14.97 mi (24.09 km) I-29 in St. Joseph I-29/US 59/71 in St. Joseph

South Dakota

I-229 11.33 mi (18.23 km) I-29 in Sioux Falls I-90 in Sioux Falls
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 30

Arkansas

I-130 proposed in Texarkana
I-430 12.93 mi (20.81 km) I-30/US 67 in Little Rock I-40/US 65 in Little Rock
I-530 46.65 mi (75.08 km) US 65 in Pine Bluff I-30/440 in Little Rock
I-630 7.40 mi (11.91 km) I-430 near Little Rock I-30 in Little Rock
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 35

Iowa

I-235 13.78 mi (22.18 km) I-35/80 in Des Moines I-35/80 in Des Moines

Kansas

I-135 95.74 mi (154.08 km) I-35 in Wichita I-70/US 81 in Salina
I-235 16.52 mi (26.59 km) I-135 in Wichita I-135 in Wichita
I-335 50.13 mi (80.68 km) I-35 in Emporia I-470 in Topeka
I-435 80.81 mi (130.05 km) Beltway around Kansas City
I-635 12.67 mi (20.39 km) I-35 in Overland Park I-29 in Kansas City, MO

Minnesota/Wisconsin

I-535 2.78 mi (4.47 km) I-35/US 53 in Duluth, MN US 53/WIS 35 in Superior, WI

Missouri

I-435 80.81 mi (130.05 km) Beltway around Kansas City
I-635 12.67 mi (20.39 km) I-35 in Overland Park, KS I-29 in Kansas City

Oklahoma

I-235 5.36 mi (8.63 km) I-35/40 in Oklahoma City I-44 in Edmond

Texas

I-635 37.00 mi (59.55 km) I-20 in Balch Springs SH 121 near DFW
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 40

Arkansas

I-440 9.96 mi (16.03 km) I-30/I-530 near Little Rock I-40/Highway 440 near Little Rock
I-540 80.72 mi (129.91 km) US 271/AR 253 near Fort Smith US 62/US 71 in Bentonville

North Carolina

I-140
I-240 11.17 mi (17.98 km)
I-440 16.40 mi (26.39 km)
I-540 9.52 mi (15.32 km)
I-840 Future part of the Greensboro Urban Loop

Oklahoma

I-240 16.22 mi (26.10 km)

Tennessee

I-140 11.17 mi (17.98 km)
I-240
I-440
I-640
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 44

Oklahoma

I-244 15.75 mi (25.35 km) I-44 in Tulsa I-44 in Tulsa
I-444 2.51 mi (4.04 km) I-244 in Tulsa I-244 in Tulsa
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 45

Texas

I-345 1.4 mi (2.25 km) I-45/ I-35 in Dallas US-75 in Dallas
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 55

Arkansas

I-555 44 mi (70.81 km) Proposed route

Illinois

I-155 32.13 mi (51.71 km) I-74 in Lincoln I-55 in Peoria
I-255 30 mi (48.28 km) I-270/I-55 in East St. Louis I-70 in East St. Louis
I-355 20 mi (32.19 km) I-55 in Chicago I-290 in Chicago

Missouri

I-155 26 mi (41.84 km) I-55 in Caruthersville US-51 in Caruthersville
I-255 30 mi (48.28 km) I-55 I-270 in St. Louis I-55 in St. Louis

Tennessee

I-155 26 mi (41.84 km) I-55 in Caruthersville US-51 in Caruthersville
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 59

Alabama

I-359 2.3 mi (3.70 km) I-20/I-59 in Moundville 15th Street in Steelman College
I-459 32 mi (51.50 km) I-20/I-59 in Gadsden I-59 in Gadsden
I-759 4.5 mi (7.24 km) I-59 in Gadsden SH-759 in Gadsden
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 64

Indiana

I-164 21.24 mi (34.18 km) I-64/I-69 in Evansville US-41 in Evansville

Kentucky

I-264 22.93 mi (36.90 km) in Louisville in Louisville

Virginia

I-264 25 mi (40.23 km) I-64/I-664 in Portsmouth King Street in Oceanfront
I-464 5.66 mi (9.11 km) I-64 in Norfolk I-264 in Chesapeake
I-564 2.77 mi (4.46 km) SH 337 I-64 in Norfolk
I-664 20.79 mi (33.46 km) I-64/I-664 in Newport News I-64 in Hampton
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 65

Alabama

I-165 4.9 mi (7.89 km) US-43 in Mobile I-65 in Mobile
I-565 34 mi (54.72 km) i-65 in Huntsville US-72 in Huntsville

Indiana

I-265 32 mi (51.50 km) I-64 in New Albany I-71 in New Albany
I-465 53 mi (85.30 km) I-65 I-74
I-865 5 mi (8.05 km) I-65 I-465

Kentucky

I-265 31 mi (49.89 km) I-65 I-71
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 69

Indiana

I-469 30.83 mi (49.62 km) I-69 in Ft. Wayne I-69 in Ft. Wayne

Mississippi

I-169 Proposed in Greenville
I-269 Proposed Memphis, TN outer beltline.

Tennessee

I-169 Proposed in Union City / Martin
I-269 Proposed Memphis outer beltline.
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 70

Colorado

I-270 5.31 mi (8.55 km) I-25/US 36 at Welby, CO I-70/US 36 at Denver, CO

Illinois

I-270 14.97 mi (24.09 km) Missouri border on the Mississippi River I-55/I-70 near Troy, IL

Kansas

I-470 13.72 mi (22.08 km) I-70 on the west side of Topeka, KS I-70 on the east side of Topeka, KS
I-670 1.64 mi (2.64 km) I-70 in Kansas City, KS Missouri border (Kansas River) in Kansas City, MO

Maryland

I-270 34.40 mi (55.36 km) I-70 near Frederick I-495 north of Bethesda
I-370 3.13 mi (5.04 km) Interstate 270 in Gaithersburg Shady Grove Metro Station

Missouri

I-170 11.17 mi (17.98 km) I-64/US 40 in Richmond Heights, MO I-270 in Hazelwood, MO
I-270 35.62 mi (57.32 km) I-55/I-255 in Green Park, MO Illinois border on the Mississippi River
I-470 16.72 mi (26.91 km) I-435 in Kansas City I-70 in Independence, Missouri
I-670 1.17 mi (1.88 km) Kansas border (Kansas River) in Kansas City, KS I-70 in Kansas City, MO

Ohio

I-270 54.97 mi (88.47 km) Beltway around Columbus, OH
I-470 6.69 mi (10.77 km) I-70 near Blaine, OH West Virginia border (Ohio River) near Wheeling, WV
I-670 9.37 mi (15.08 km) I-70 in Columbus, OH I-71 in Columbus, OH

West Virginia

I-470 3.94 mi (6.34 km) Ohio border (Ohio River) near Wheeling, WV I-70 in Elm Grove, WV
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 71

Kentucky/Ohio

I-471 5.75 mi (9.25 km) I-275 in Newport I-71 in Newport

Ohio

I-271 56 mi (90.12 km) I-71 in Cleveland I-90 in Cleveland
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 72

Illinois

I-172 19.69 mi (31.69 km) I-72 in Quincy US-24 in Quincy
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 74

Illinois

I-474 14.88 mi (23.95 km) I-74 in Peoria I-74 in Morton

North Carolina

I-274 Proposed route in Winston-Salem

South Carolina

I-174 Proposed route in Horry County
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 75

Florida

I-175 St. Petersburg 14.88 mi (23.95 km) I-275 in St. Petersburg FL-687 in St. Petersburg
I-275 63.39 mi (102.02 km) I-75 in Tampa Bay Area I-75 in Tampa Bay Area
I-375 1.34 mi (2.16 km) I-275 in St. Petersburg US 92 in St. Petersburg

Georgia

I-475 15.8 mi (25.43 km) I-75 in Macon I-75 in Macon
I-575 30.9 mi (49.73 km) I-75 in Atlanta I-75 in Atlanta
I-675

Indiana/Kentucky/Ohio

I-275

Michigan

I-275
I-375
I-475
I-675

Ohio

I-475
I-675

Tennessee

I-275
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 76

New Jersey

I-676

Pennsylvania

I-176
I-276
I-376
I-476
I-576 (proposed in metro Pittsburgh)
I-676
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 77

Ohio

I-277 I-76 in Akron I-77 in Akron
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 78

New Jersey

I-278 US 1-9 Bruckner Interchange

New York

File:I-278 (NY).svg I-278 US-1-9 Bruckner Interchange
I-478 File:I-278 (NY).svg I-278 NY-90
I-678 John F. Kennedy International Airport Bruckner Interchange
File:I-878 (NY).svg I-878 Belt Atlantic Beach Bridge
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 79

Pennsylvania

I-279 19.52 mi (31.41 km) I-79 I-79
I-579 1.57 mi (2.53 km) PA-885 I-279
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 80

California

I-280 57 mi (91.73 km) I-680/US-101 in San Jose King Street in San Francisco
I-380 1.5 mi (2.41 km) I-280 in San Bruno US-101/ San Francisco International Airport
I-580 71 mi (114.26 km) I-5 near Westley US-101 in San Rafael
I-680 I-280/US-101 in San Jose I-80 in Fairfield
I-780 6 miles I-80 in Vallejo I-680 in Benicia
I-880 CA-17 in San Jose I-580/I-80 in Oakland
I-980 2.4 miles I-880 in Downtown Oakland I-580/CA-244 in East Oakland

Illinois

I-180 IL-26/71 I-80
I-280 I-80 I-74/I-80

Iowa

I-280 I-80 I-74/I-80
I-380 I-80 in Coralville US 218 in Waterloo
I-480 I-80 I-29
I-680 I-80 I-80

Nebraska

I-180 US 34 I-80
I-480 I-80 I-29
I-680 I-80 I-80

Nevada

I-580

New Jersey

I-280

Ohio

I-280
I-480
I-680

Pennsylvania

I-180
I-380

Wyoming

I-180
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 81

New York

I-481 File:I-81 (NY).svg I-81 in Syacruse File:I-81 (NY).svg I-81 in Syacruse

Virginia

I-381 VA 381 I-81
I-581 US 220 I-81
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 82

Washington

I-182 I-82 US 395
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 83

Pennsylvania

I-283 I-76 I-83
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 84 (east)

Connecticut

I-384 I-84 US 44
I-684 File:I-287 (NY).svg I-287 NY-22

New York

I-684 File:I-287 (NY).svg I-287 NY-22
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 84 (west)

Idaho

I-184 I-84 US 20/26
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 85

Georgia

I-185
I-285
I-985

North Carolina

I-285
I-485
I-785

South Carolina

I-185
I-385
I-585

Virginia

I-785 Route proposed in Danville
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 87

New Jersey/New York

I-287 File:I-95 (NY).svg I-95 File:I-95 (NY).svg I-95

New York

I-587 I-87 NY-32
I-787 I-87 NY-7
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 89

Vermont

I-189 US 7 I-89
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 90

Illinois

I-190
I-290

Massachusetts

I-190
I-290

New York

I-190
I-290
I-390
I-490
I-590
I-690
I-790
I-890
I-990

Ohio

I-490

South Dakota

I-190
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 91

Connecticut

I-291
I-691

Massachusetts

I-291
I-391
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 93

New Hampshire

I-293
I-393
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 94

Illinois

I-294

Michigan

I-194

Minnesota

I-394
I-494
I-694

North Dakota

I-194 Unsigned route in Bismarck

Wisconsin

I-794
I-894
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 95

Connecticut

I-395

Delaware

I-295
I-495

District of Columbia

I-295
I-395
I-595 Unsigned in metro Washington, D.C.
I-695 (unsigned route)

Florida

I-195
I-295
I-395
I-595
I-795

Maine

I-195
I-295
I-395
I-495 (unsigned in Portland)

Maryland

I-195
I-295
I-395
I-495
I-595 (unsigned in metro Washington, D.C.)
I-695
I-795
I-895

Massachusetts

I-195
I-295
I-395
I-495

New Jersey

I-195
I-295

New York

I-295
File:I-495 (NY).svg I-495
I-695
I-895

North Carolina

I-295

Pennsylvania

I-295

Rhode Island

I-195
I-295

Virginia

I-195
I-295
I-395
I-495
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Interstate 96

Michigan

I-196 81 mi (130.36 km) I-94 in Benton Harbor I-96 in Grand Rapids
I-296 3.43 mi (5.52 km) I-196 in Grand Rapids I-96
I-496 11.78 mi (18.96 km) I-96/I-69 in Lansing I-96 in Lansing
I-696 21.24 mi (34.18 km) I-275/I-96 in Novi I-94 in Roseville
Interstate Length[1] Southern/Western terminus Northern/Eastern terminus

Exceptions

California

I-238 2.02 mi (3.25 km) I-580 in Castro Valley I-880 in Castro Valley


See also

References

  1. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as "Route Log and Finder List - Table 2" (CFM). Federal Highway Administration. 10-31-2002. Retrieved 2007-06-02. {{cite web}}: Check date values in: |date= (help)
  2. ^ "California Log of Bridges on State Highways, District 7" (PDF). CalTrans. 2006. Retrieved 2007-06-02. {{cite web}}: Check date values in: |year= (help); Unknown parameter |month= ignored (help)CS1 maint: year (link)
  3. ^ "State Maintained Highways, Descriptions, Index & Maps and NHS, Clark County" (PDF). Retrieved 2007-06-03. {{cite web}}: Cite has empty unknown parameter: |month= (help)
  4. ^ a b DeLorme Street Atlas USA 2007, Toggle Measure Tool
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