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FHWA Route Log and Finder List

Table 2 - Auxiliary Routes

Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways as of January 2025
Interstate Route State Total Miles Net Miles Howard- Cramer Miles Sections 103(c)(4)(A) Miles ISTEA Miles Overlap Miles & Route Urban Areas Served (* = Major Suburbs)
H-201 Hawaii 4.10 4.10 - 4.10 - - Honolulu
I-105 California 17.64 17.64 7.00 - - - Los Angeles; Inglewood; South Gate; Downey
Oregon 3.49 3.49 - - - - Eugene
I-110 California 20.34 20.34 - - - - Los Angeles; Pasadena; Hawthorne; Gardena; Carson
Texas 0.92 0.92 - - - - El Paso
Louisiana 9.07 9.07 - - - - Baton Rouge
Mississippi 4.10 4.10 - - - - Biloxi-Gulfport
Florida 6.34 6.34 - - - - Pensacola
I-115 Montana 1.20 1.20 - - - - Butte
I-124 Tennessee 1.92 1.92 - - - - Chattanooga
I-126 South Carolina 60.20 3.68 - - - - Columbia
I-129 Iowa 0.28 0.28 - - - - Sioux City
Nebraska 3.21 3.21 - - - - Sioux City
I-135 Kansas 96.40 96.40 - - - - Wichita; Salina
I-140 Tennessee 11.19 11.19 - 11.17 - - Knoxville
North Carolina 19.52 19.52 - 19.52 - - Wilmington
I-155 Illinois 32.13 32.13 - 32.13 - - Lincoln; Peoria
Missouri 10.72 10.72 - - - - Caruthersville
Tennessee 15.94 15.94 - - - - Dyersburg
I-165 Alabama 60.80 4.90 - - - - Mobile; Prichard
Kentucky 70.19 70.19 - - - - Bowling Green; Owensboro
I-164 Indiana              
I-169 Texas 1.29 4.00 - - 4.00 - Brownsville
I-170 Missouri 11.13 11.13 - 4.29 - - St. Louis; Hazelwood; Berkeley; Clayton; University City; Richmond Heights
I-172 Illinois 19.69 19.69 - 19.69 - - Quincy
I-175 Florida 1.28 1.28 - 1.44 - - Tampa-St. Petersburg
I-176 Pennsylvania 4.40 11.35 - - - - Reading
I-180 Wyoming 1.12 1.12 - - - - Cheyenne
Nebraska 3.47 3.47 - - - - Lincoln
Illinois 13.19 13.19 - - - - None
Pennsylvania 1.29 28.84 - 28.85 - - Williamsport; Montoursville
I-182 Louisiana 0.01 0.01          
I-182 Washington 15.19 15.19 - - - - Richland, Pasco, Kennewick-Richland
I-184 Idaho 6.34 3.62 - - - - Boise
I-185 Georgia 49.60 49.60 - 5.50 - - Columbus
South Carolina 62.65 17.70 - 14.50 - - Maudlin-Simpsonville
I-189 Vermont 1.49 1.49 - - - - Burlington
I-190 South Dakota 2.06 2.06 - - - - Rapid City
Illinois 3.07 3.07 - 3.07 - - Chicago; Park Ridge; Schiller Park; Harwood Heights
New York 28.34 28.34 - - - - Buffalo
Massachusetts 19.26 19.26 - - - - Worcester; Leominster-Fitchburg
I-194 North Dakota 24.00 1.20 - - - - Bismarck
Michigan 3.40 3.40 - - - - Battle Creek
I-195 Florida 4.40 4.42 - - - - Miami; Miami Beach
Virginia 3.50 3.50 - - - - Richmond
Maryland 4.35 4.35 2.20 1.04 - - Baltimore; Halethorpe; Linthicum
New Jersey 34.16 34.16 27.30 - - - New York-Newark; Trenton
Rhode Island 3.57 3.57 - - - - Providence; East Providence
Massachusetts 40.73 40.73 - 14.28 - - Barnstable Town; New Bedford; Fairhaven
District of Columbia 6.34 5.04         Washington, D.C.
Maine 1.53 1.53 - - - - Biddeford-Saco
I-196 Michigan 80.80 80.80 - - - - Benton Harbor, Holland, Grand Rapids; Grandville; Wyoming
I-205 California 60.20 14.23 - - - - Tracy
Oregon 26.56 26.56 - - - - Portland; Milwaukie; Parkrose
Washington 10.57 10.57 - - - - Vancouver
I-210 California 1.29 44.24 - - - - Los Angeles; Glendale; Pasadena; Arcadia
Louisiana 12.73 12.73 - - - - Lake Charles
I-215 California 6.34 55.08 - 44.24 - - Riverside-San Bernardino, Temecula-Murrieta
Utah 1.28 28.90 - - - - Salt Lake City; Millcreek; Holladay; Cottonwood
Nevada  11.70 11.70 - 11.10 -   Henderson, Las Vegas
I-220 Louisiana 12.57 12.57 - - - - Shreveport; Bossier City
Mississippi 12.01 12.01 - - - - Jackson
I-225 Colorado 1.22 12.46 - - - - Denver-Aurora
I-229 Missouri 14.94 14.94 - - - - St. Joseph
South Dakota 11.38 11.38 - - - - Sioux Falls
I-235 Oklahoma 5.38 5.38 - 1.54 - - Oklahoma City
Kansas 16.67 16.67 - - - - Wichita
Iowa 14.58 14.58 - - - - Des Moines
I-238 California 60.20 2.17   2.17 - - Hayward
I-240 Oklahoma 16.50 16.50 - 4.35 - - Oklahoma City
Tennessee 19.98 19.98 - - - 5.2 Mi on I-69 Memphis
North Carolina 9.50 9.50 - 6.92 - - Asheville
I-244 Oklahoma 16.31 16.31 - - - - Tulsa
I-255 Missouri 3.97 3.97 - - - - St. Louis; East St. Louis
Illinois 27.05 27.05 - - - - St. Louis; East St. Louis
I-264 Kentucky 22.93 22.93 - - - - Louisville; Shively; St. Matthews
Virginia 25.07 25.07 - 12.00 - - Virginia Beach
I-265 Kentucky 24.48 24.48 - 21.20 - - Louisville; Okolona; Jeffersontown
Indiana 6.73 6.73 - - - - New Albany
I-269 Tennessee 19.17 19.17 - - 19.20 - Collierville; Memphis; Arlington
Mississippi 25.93 25.93 - - 25.93 - Hernando
I-270 Colorado 6.34 6.61 - - - - Denver-Aurora; Commerce City
I-270 Missouri 35.21 35.21 - - - - St. Louis; Florissant; Ferguson; Bridgeton; Kirkwood
I-270 Illinois 14.97 14.97 - - - - St. Louis; East St. Louis; Granite City
I-270 Ohio 54.92 54.92 - - - - Columbus; Whitehall; Gahanna; Upper Arlington; Grove City
I-270 Maryland 34.40 34.40 - - - - Rockville, Gaithersburg, Frederick
I-271 Ohio 40.50 40.50 - - - 5.84 Mi. on I-480 Cleveland; Maple Heights; Shaker Heights; South Euclid
I-275 Florida 60.20 60.20 - - - - St. Petersburg-Tampa; Gulfport; Pinellas Park; Sarasota-Bradenton
Tennessee 2.98 2.98 - - - - Knoxville
Kentucky 24.58 24.58 - - - - Covington- Newport
Ohio 52.86 52.86 - - - 3.45 Mi. on I-74 Cincinnati; Sharonville; Springdale
Indiana 3.16 3.16 - - - - None
Michigan 29.97 29.97 - - - - Ann Arbor, Detroit; Romulus; Westland
I-276 Pennsylvania 60.80 32.28 - - - - Philadelphia; King of Prussia; Norristown
I-277 North Carolina 4.45 4.45 - 1.72 - - Charlotte
Ohio 4.35 4.35 - - - - Akron
I-278 New Jersey 1.98 1.98 - - - - Elizabeth
New York 33.62 33.62 - - - - New York City-Newark; Staten Island; Brooklyn; Queens; Bronx
I-279 Pennsylvania 1.28 13.32 - - - - Pittsburgh
I-280 California 4.40 57.46 - - - - San Francisco, San Jose; Daly City; San Bruno; Mountain View
Iowa 9.86 9.86 - - - - Davenport
Illinois 8.21 8.21 - - - 9.39 Mi. on I-74 Rock Island
Ohio 12.61 12.61 - - - - Toledo
New Jersey 17.84 17.84 - - - - Orange, West Orange, East Orange, Newark
I-283 Pennsylvania 12.86 2.91 - - - - Harrisburg
I-285 Georgia 62.60 62.60 - - - 1.21 Mi. on I-85 Atlanta
North Carolina 23.25 23.25         Lexington; Winston-Salem
I-287 New Jersey 67.54 67.54 - - - - Northeast New Jersey; Somerville; Morristown; Pompton Plain; Oakland
I-287 New York 11.98 11.98 - - - 19.20 Mi. on I-87 New York City; Suffern; Spring Valley; White Plains; Tarrytown; Port Chester
I-290 Illinois 29.84 29.84 - - - - Chicago; Schaumburg; Elmhurst; Maywood; Cicero
New York 9.80 9.80 - - - - Buffalo; Town of Tonawanda; Amherst
Massachusetts 20.16 20.16 - - - - Worcester
I-291 Connecticut 12.86 6.02 - - - - Hartford
Massachusetts 5.44 5.44 - - - - Springfield
I-293 New Hampshire 11.77 11.77 - 5.68 - - Manchester
I-294 Illinois 48.10 48.10 - - - 5.32 Mi. on I-80 Chicago; Harvey; Westchester; Oak Lawn
I-295 Florida 60.80 60.80 - 25.53 - - Jacksonville
North Carolina 22.48 22.48 - - - - Fayetteville
Virginia 52.96 52.96 - - - - Richmond, Petersburg-Colonial Heights
Pennsylvania 10.82 10.82          
District of Columbia 1.29 3.47 - - - - Washington, D.C.
Maine 52.51 52.51         Portland,Lewiston, Gardner
Maryland 0.80 0.80 - - - - Washington, D.C.
Delaware 1.28 5.71 - - - - Wilmington
New Jersey 76.56 76.56 - - - - Camden, Trenton
New York 7.70 7.70 - - - - New York City; Queens; Bronx
Rhode Island 23.12 23.12 - - - - Providence; Cranston
Massachusetts 4.23 4.23 - - - - Providence (R.I.)
I-296 Michigan 3.50 3.50 - - - - Grand Rapids
I-310 Louisiana 11.70 11.70 - - - - New Orleans
I-315 Montana 0.83 0.83 - - - - Great Falls
I-335 Kansas 50.28 50.28 - 50.13 - - Topeka, Emporia
Oklahoma 18.71 18.71          
I-344 Oklahoma 30.97 30.97          
I-345 Texas 60.20 1.40 - - - - Dallas
I-355 Illinois 32.72 32.72 - 32.51 - - Chicago; Bolingbrook; Downers Grove; Glen Ellyn; Lombard
I-359 Alabama 1.22 2.80 - - - - Tuscaloosa
I-369 Texas 1.29 3.50 - - 3.50 -
I-370 Maryland 2.54 2.54 1.18 - - - Washington, D.C.; Rockville; Gaithersburg
I-375 Florida 1.20 1.20 - 1.34 - - Tampa-St. Petersburg
Michigan 1.10 1.10 - - - - Detroit
I-376 Pennsylvania 84.60 84.60 - - - - Pittsburgh; Monroeville; Wilkinsburg
I-380 California 60.20 2.06 - - - - San Francisco-Oakland; San Bruno; Waterloo, Cedar Rapids, Iowa City
Iowa 72.96 72.96 - - - - Waterloo, Cedar Rapids, Iowa City
Pennsylvania 24.46 24.46 - - - - Scranton
I-381 Virginia 1.39 1.39 - - - - Bristol
I-384 Connecticut 12.86 8.20 - - - - Hartford; East Hartford; Manchester
I-385 South Carolina 42.16 42.16 - 36.00 - - Greenville; Laurens
I-390 New York 76.06 76.06 60.50 - - - Rochester
I-391 Massachusetts 4.46 4.46 - - - - Springfield
*Chicopee
*Holyoke
I-393 New Hampshire 4.50 4.50 - - - - Concord
I-394 Minnesota 9.74 9.74 - - - - Minneapolis; St. Louis Park; Golden Valley
I-395 Florida 1.29 1.29 - - - - Miami
Virginia 10.53 10.53 - - - - Arlington, Alexandria
District of Columbia 12.86 2.18 - - - - Washington, D.C.
Maryland 1.98 1.98 - - - - Baltimore
Connecticut 1.28 54.69 - 54.69 - - Norwich-New London
Massachusetts 11.91 11.91 - 11.91 - - Worcester
Maine 4.77 4.77 - - - - Bangor
I-405 California 60.80 72.40 - - - - Los Angeles; Irvine; Costa Mesa; Huntingdon Beach; Long Beach; Torrance; Inglewood; Santa Monica
Oregon 4.25 4.25 - - - - Portland
Washington 30.30 30.30 - - - - Seattle; Renton; Bellevue
I-410 Texas 12.86 49.49 - 9.93 - - San Antonio
I-430 Arkansas 6.34 13.75 - - - - Little Rock
I-435 Kansas 27.99 27.99 - - - - Kansas City; Leawood; Overland Park; Shawnee
Missouri 52.75 52.75 - - - - Kansas City; Grandview; Raytown; Independence; Gladstone
I-440 Arkansas 60.20 10.11 - 10.11 - - Little Rock
Tennessee 7.66 7.66 - - - - Nashville-Davidson
North Carolina 14.13 14.13 - 16.77 - 2.9 Mi on I-87 Raleigh
I-444 Oklahoma 2.86 2.86 - - - - Tulsa
I-459 Alabama 12.86 33.76 - - - - Birmingham; Bessemer; Bluff Park; Homewood
I-464 Virginia 5.67 5.67 - - - - Virginia Beach
I-465 Indiana 42.73 42.73 - 5.03 - 20.60 Mi on I-74 Indianapolis
I-469 Indiana 30.83 30.83 - 30.83 - - Ft. Wayne, New Haven
I-470 Kansas 15.37 15.37 - - - - Topeka
Missouri 17.07 17.07 - - - - Kansas City, Lee's Summit; Independence
Ohio 6.92 6.92 - - - - Wheeling (W.Va.-Ohio)
West Virginia 1.29 3.94 - - - - Wheeling
I-471 Kentucky 5.02 5.02 - - - - Newport
Ohio 0.88 0.88 - - - - Cincinnati
I-474 Illinois 14.88 14.88 - - - - Peoria
I-475 Georgia 15.90 15.90 - - - - Macon
Ohio 20.61 20.61 - - - - Toledo
Michigan 16.90 16.90 - - - - Flint
I-476 Pennsylvania 131.50 131.50 - 110.00 - - Allentown-Bethlehem,; Philadelphia; Ridley Park; Marple; Broomall; Conshohocken; Scranton
I-478 New York 2.14 2.14 - 2.14 - - New York City; Brooklyn; Manhattan
I-480 Nebraska 4.52 4.52 - - - - Omaha
Iowa 0.41 0.41 - - - - Council Bluffs
Ohio 44.45 44.45 - - - 5.84 Mi. on I-271 Cleveland; Bedford Heights; Maple Heights; Garfield Heights; North Olmstead; Parma
I-481 New York 15.04 15.04 - - - - Syracuse; DeWitt
I-485 North Carolina 65.61 65.61 - 66.68 - - Charlotte, Gastonia
I-490 Ohio 2.57 2.57 - - - - Cleveland
New York 37.40 37.40 - - - - Rochester
I-494 Minnesota 42.82 42.82 - - - - Minneapolis; Bloomington; Eden Prairie; Maple Grove; Minnetonka
I-495 Virginia 15.36 15.36 - - - - Washington, D.C.; Springfield; Annandale; McLean; Vienna
Maryland 16.13 16.13 - - - - Washington, D.C.; Bethesda; Wheaton; Silver Spring
Delaware 1.28 11.47 - - - - Wilmington; Claymont
New York 66.38 66.38 - 62.70 - - New York City *Manhattan; Manhattan; Queens; Long Island
Massachusetts 121.56 121.56 12.90 18.50 - - Barnstable Town, Boston, Lowell, Lawrence
Maine 4.36 4.36 - 4.30 - - Portland
I-496 Michigan 12.10 12.10 - - - - Lansing
I-505 California 1.29 33.01 - - - - Vacaville
I-510 Louisiana 3.40 3.40 - - - - New Orleans
I-515 Nevada 14.44 14.44 - 14.90 - - Las Vegas
I-516 Georgia 6.60 6.60 - 6.49 - - Savannah
I-520 Georgia 15.30 15.30 9.11 7.03 - - Augusta
South Carolina 60.20 7.20 - 7.20 - - North Augusta, Belvedere
I-526 South Carolina 60.80 19.26 - 11.20 - - Charleston; North Charleston; Mount Pleasant
I-530 Arkansas 1.22 46.63 - 46.63 - - Pine Bluff
I-535 Minnesota 1.58 1.58 - - - - Duluth
Wisconsin 12.86 1.21 - - - - Superior
I-540 North Carolina 25.84 25.84 - 25.84 - - Raleigh, Knightsdale
Arkansas 1.28 14.74   14.74     Fort Smith
I-555 Arkansas 4.40 49.94 - 5.00 - - Trumann, Jonesboro
I-564 Virginia 2.77 2.77 - - - - Virginia Beach
I-565 Alabama 60.80 22.49 - - - - Huntsville
I-575 Georgia 31.03 31.03 29.16 - - - Atlanta
I-579 Pennsylvania 1.55 1.55 - - - - Pittsburgh
I-580 California 12.86 76.12 - 7.30 - - Concord, Livermore, San Francisco-Oakland, San Rafeal-Novato
Nevada 35.05 35.05 - 31.24 - - Carson City, Reno
I-581 Virginia 6.64 6.64 - - - - Roanoke
I-585 South Carolina 4.40 2.25 - - - - Spartanburg
I-587 North Carolina 37.07 37.07         Wilson, Greenville
New York 1.21 1.21 - - - - Kingston
I-590 New York 5.31 5.31 5.31 - - - Rochester
I-595 Maryland 19.97 19.97 19.31 - - - Washington, D.C.; Bowie; Annapolis
Florida 12.86 12.86 - 8.80 - - Miami
I-605 California 27.96 27.96 - - - - Los Angeles; Long Beach; Lakewood; Bellflower; Norwalk; Downey; South Whittier; El Monte
I-610 Texas 37.97 37.97 - - - - Houston
Louisiana 5.05 5.05 - - - - New Orleans
I-630 Arkansas 7.86 7.86 - - - - Little Rock
I-635 Texas 37.00 37.00 - - - - Dallas; Balch Springs; Mesquite
Kansas 9.20 9.20 - - - - Kansas City
Missouri 3.69 3.69 - - - - Kansas City
I-640 Tennessee 7.04 7.04 - - - - Knoxville
I-664 Virginia 20.57 20.57 - 9.20 - - Virginia Beach
I-670 Kansas 1.74 1.74 - - - - Kansas City
Missouri 2.32 2.32 - - - - Kansas City
Ohio 10.77 10.77 - - - - Columbus
I-675 Georgia 11.10 11.10 7.78 - - - Atlanta
Ohio 27.41 27.41 - - - - Dayton
Michigan 7.70 7.70 - - - - Saginaw
I-676 Pennsylvania 2.89 2.89 - - - - Philadelphia
New Jersey 4.72 4.72 - - - - Camden
I-678 New York 14.33 14.33 - 7.80 - - New York City; Queens; Bronx
I-680 California 70.49 70.49 - 12.50 - - San Jose, Milpitas, Freemont, Walnut Creek, Concord
Iowa 3.30 3.30          
Nebraska 13.47 13.47 - - - - Omaha
Ohio 16.52 16.52 - - - - Youngstown
I-684 New York 27.06 27.06 - - - - White Plains
Connecticut 1.41 1.41 - - - - Bridgeport-Stamford
I-690 New York 14.19 14.19 - - - - Syracuse
I-691 Connecticut 8.38 8.38 6.69 - - - Hartford, New Haven
I-694 Minnesota 23.10 23.10 - - - 0.65 Mi on I-35E Minnieapolis-St. Paul; Maplewood; Roseville; Fridley
I-695 Maryland 30.57 30.57 - 2.20 - - Baltimore; Dundalk; Essex; Rosedale; Towson; Catonsville
New York 1.40 1.40         New York City
I-696 Michigan 29.30 29.30 - - - - Detroit; Warren; Roseville
I-705 Washington 1.50 1.50 - - - - Seattle
I-710 California 19.59 19.59 - 19.66 - - Los Angeles; Long Beach; Downey; Compton; East Los Angeles
I-759 Alabama 4.86 4.86 - - - - Gadsden
I-780 California 7.02 7.02 - - - - Vallejo
I-781 New York 4.30 4.30 - - - -  
I-785 North Carolina 7.60 7.60 - - - 6.81 Mi on I-840 Greensboro
I-787 New York 10.16 10.16 - - - - Albany
I-790 New York 2.41 2.41 - - - - Utica
I-794 Wisconsin 3.75 3.75 - - - - Milwaukee
I-795 Maryland 8.99 8.99 - 5.47 - - Baltimore; Pikesville; Owings Mill
North Carolina 21.15 21.15 - 25.46 -   Goldsboro
I-805 California 28.58 28.58 - - - - San Diego; Chula Vista; National City
I-820 Texas 35.17 35.17 - - - - Dalla-Ft. Worth-Arlington
I-840 North Carolina 10.63 10.63 - - - 3.56 Mi on I-73, 6.81 Mi on I-785 Greensboro
Tennessee 77.28 77.28 - - - - Murfreesboro, Lebanon
I-865 Indiana 5.03 5.03 - - - - Indianapolis
I-878 New York 0.70 0.70 - - - - New York City
I-880 California 46.03 46.03 - 47.22 - - San Jose, San Fracisco-Oakland
Iowa 17.10 17.10 - - -   Omaha
I-885 North Carolina 8.86 8.86          
I-890 New York 9.35 9.35 - - - - Albany
I-894 Wisconsin 4.70 4.70 - - - 10 Mi on I-41 Milwaukee; West Allis; Wauwatosa
I-895 Maryland 11.44 11.44 - - - - Baltimore; Dundalk
I-910 Louisiana 10.53 10.53 - - 9.70 -  
I-980 California 2.00 2.00 - 1.00 - - Oakland
I-985 Georgia 23.90 23.90 - 24.04 - - Gainesville
I-990 New York 6.35 6.35 - 2.04 - - Buffalo; Amherst

 

Notes:

Updated: 2/18/2025
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