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Table 2 - Auxiliary Routes

Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways as of December 31, 2013
Interstate RouteStateTotal MilesNet MilesHoward-Cramer Miles Sections 103(c)(4)(A) Miles ISTEA Miles Overlap Miles & Route Urban Areas Served (* = Major Suburbs)
H-201Hawaii4.14.1-4.1--Honolulu
I-105California17.3217.327---Los Angeles
* Inglewood
* South Gate
* Downey
Oregon3.493.49----Eugene
I-110California20.4320.43----Los Angeles
* Pasadena
* Hawthorne
* Gardena
* Carson
Texas0.920.92----El Paso
Louisiana8.898.89----Baton Rouge
Mississippi4.14.1----Biloxi-Gulfport
Florida6.946.94----Pensacola
I-115Montana1.191.19----Butte
I-124Tennessee1.971.97----Chattanooga
I-126S. Carolina3.683.68----Columbia
I-129Iowa0.270.27----Sioux City
Nebraska3.213.21----Sioux City
I-135Kansas95.7495.74----Wichita
* Salina
I-140Tennessee11.1711.17-11.17--Knoxville
North Carolina6.806.80-6.80--Wilmington
I-155Illinois32.1332.13-32.13--Lincoln, Peoria
Missouri10.8410.84----Caruthersville
Tennessee15.9315.93----Dyersburg
I-165Alabama4.94.9----Mobile
* Prichard
I-170Missouri11.1711.17-4.29--St. Louis
* Hazelwood
* Berkeley
* Clayton
* University City
* Richmond Heights
I-172Illinois19.6919.69-19.69--Quincy
I-175Florida1.441.44-1.44--Tampa-St. Petersburg
I-176Pennsylvania11.3311.33----Reading
I-180Wyoming1.091.09----Cheyenne
Nebraska3.183.18----Lincoln
Illinois13.1913.19----None
Pennsylvania28.8528.85-28.85--Williamsport
* Montoursville
I-181Tennessee8.48.4-8.4--Kingsport
I-182Washington15.1915.19----Richland, Pasco, Kennewick-Richland
I-184Idaho3.623.62----Boise
I-185Georgia49.349.3-5.5--Columbus
S. Carolina17.717.7-14.5--Maudlin-Simpsonville
I-189Vermont1.491.49----Burlington
I-190South Dakota1.721.72----Rapid City
Illinois3.073.07-3.07--Chicago
* Park Ridge
* Schiller Park
* Harwood Heights
New York28.3428.34----Buffalo
Massachusetts19.2619.26----Worcester, Leominster-Fitchburg
I-194North Dakota1.21.2----Bismarck
Michigan3.383.38----Battle Creek
I-195Florida4.424.42----Miami
* Miami Beach
Virginia3.243.24----Richmond
Maryland4.714.712.21.4--Baltimore
* Halethorpe
* Linthicum
New Jersey34.1734.1727.3---New York-Newark, Trenton
Rhode Island3.823.82----Providence
* East Providence
Massachusetts40.7340.73-14.28--Barnstable Town
New Bedford
* Fairhaven
Maine1.551.55----Biddeford-Saco
I-196Michigan80.6580.65----Benton Harbor, Holland, Grand Rapids
* Grandville
* Wyoming
I-205California12.9712.97----Tracy
Oregon26.0726.07----Portland
* Milwaukie
* Parkrose
Washington10.5710.57----Vancouver
I-210California48.7248.72----Los Angeles
* Glendale
* Pasadena
* Arcadia
Louisiana12.412.4----Lake Charles
I-215California54.554.5-54.5--Riverside-San Bernardino, Temecula-Murrieta
Utah29.0229.02----Salt Lake City
* Millcreek
* Holladay
* Cottonwood
Nevada11.111.1-11.1- Henderson, Las Vegas
I-220Louisiana17.6217.62----Shreveport
* Bossier City
Mississippi12.0112.01----Jackson
I-225Colorado1212----Denver-Aurora
I-229Missouri14.9714.97----St. Joseph
South Dakota11.3311.33----Sioux Falls
I-235Oklahoma5.365.36-1.54--Oklahoma City
Kansas16.5216.52----Wichita
Iowa13.7813.78----Des Moines
I-238California2.232.23-2.23--Hayward
I-240Oklahoma16.2216.22-4.35--Oklahoma City
Tennessee19.2719.27----Memphis
N. Carolina9.149.14-6.92--Asheville
I-244Oklahoma15.7515.75----Tulsa
I-255Missouri3.773.77----St. Louis
* East St. Louis
Illinois27.0527.05----St. Louis
* East St. Louis
I-264Kentucky22.9322.93----Louisville
* Shively
* St. Matthews
Virginia25.0725.07-12--Virginia Beach
I-265Kentucky24.4824.48-21.2--Louisville
* Okolona
* Jeffersontown
Indiana6.736.73----New Albany
I-270Colorado5.315.31----Denver-Aurora
* Commerce City
Missouri35.6235.62----St. Louis
* Florissant
* Ferguson
* Bridgeton
* Kirkwood
Illinois14.9714.97----St. Louis
* East St. Louis
* Granite City
Ohio54.9754.97----Columbus
* Whitehall
* Gahanna
* Upper Arlington
* Grove City
Maryland34.434.4----Rockville, Gaithersburg, Frederick
I-271Ohio46.0640.22---5.84 Mi. on I-480Cleveland
* Maple Heights
* Shaker Heights
* South Euclid
I-275Florida60.6460.64----St. Petersburg-Tampa
* Gulfport
* Pinellas Park
Sarasota-Bradenton
Tennessee2.982.98----Knoxville
Kentucky24.5824.58----Covington- Newport
Ohio55.9752.52---3.45 Mi. on I-74Cincinnati
* Sharonville
* Springdale
Indiana3.163.16----None
Michigan29.9729.97----Ann Arbor, Detroit
* Romulus
* Westland
I-276Pennsylvania32.6532.65----Philadelphia
* King of Prussia
* Norristown
I-277N. Carolina4.414.41-1.72--Charlotte
Ohio4.144.14----Akron
I-278New Jersey22----Elizabeth
New York33.6233.62----New York City-Newark
*Staten Island
*Brooklyn
*Queens
*Bronx
I-279Pennsylvania19.5219.52----Pittsburgh
I-280California57.2257.22----San Francisco, San Jose
* Daly City
* San Bruno
* Mountain View
Iowa9.389.38----Davenport
Illinois17.68.21---9.39 Mi. on I-74Rock Island
Ohio12.4112.41----Toledo
New Jersey17.8517.85----Orange, West Orange, East Orange, Newark
I-283Pennsylvania2.912.91----Harrisburg
I-285Georgia63.9862.77---1.21 Mi. on I-85Atlanta
I-287New Jersey67.5467.54----Northeast New Jersey
* Somerville
* Morristown
* Pompton Plain
* Oakland
New York31.1811.98---19.20 Mi. on I-87New York City
* Suffern
* Spring Valley
* White Plains
* Tarrytown
* Port Chester
I-290Illinois29.8429.84----Chicago
* Schaumburg
* Elmhurst
* Maywood
* Cicero
New York9.89.8----Buffalo
* Town of Tonawanda
* Amherst
Massachusetts20.1620.16----Worcester
I-291Connecticut6.026.02----Hartford
Massachusetts5.445.44----Springfield
I-293New Hampshire11.1811.18-5.68--Manchester
I-294Illinois53.4248.1---5.32 Mi. on I-80Chicago
* Harvey
* Westchester
* Oak Lawn
I-295Florida61.0461.04-25.53--Jacksonville
Virginia52.5652.56----Richmond, Petersburg-Colonial Heights
District of Columbia5.25.2----Washington, D.C.
Maine10.910.9    Portland
Maryland0.80.8----Washington, D.C.
Delaware5.715.71----Wilmington
New Jersey68.0668.06----Camden, Trenton
New York9.19.1----New York City
* Queens
* Bronx
Rhode Island22.3522.35----Providence
* Cranston
Massachusetts4.234.23----Providence (R.I.)
Maine11.0211.02----Portland
I-296Michigan3.433.43----Grand Rapids
I-305California8.448.44----Sacramento
I-310Louisiana11.2511.25----New Orleans
I-315Montana0.830.83----Great Falls
I-335Kansas50.1350.13-50.13--Topeka, Emporia
I-345Texas1.41.4----Dallas
I-355Illinois32.5132.51-32.51--Chicago
* Bolingbrook
* Downers Grove
* Glen Ellyn
* Lombard
I-359Alabama2.32.3----Tuscaloosa
I-369Texas3.53.5--3.5-
I-370Maryland2.542.541.18---Washington, D.C.
* Rockville
* Gaithersburg
I-375Florida1.341.34-1.34--Tampa-St. Petersburg
Michigan1.061.06----Detroit
I-376Pennsylvania78.778.7----Pittsburgh
       * Monroeville
       * Wilkinsburg
       
I-380California3.33.3----San Francisco-Oakland
* San Bruno
Iowa73.0573.05----Waterloo, Cedar Rapids, Iowa City
Pennsylvania24.7624.76----Scranton
I-381Virginia1.671.67----Bristol
I-384Connecticut8.28.2----Hartford
* East Hartford
* Manchester
I-385S. Carolina42.1642.16-36--Greenville
* Laurens
I-390New York76.0676.0660.5---Rochester
I-391Massachusetts4.464.46----Springfield *Chicopee *Holyoke
I-393New Hampshire4.64.6----Concord
I-394Minnesota9.759.75----Minneapolis
* St. Louis Park
* Golden Valley
I-395Florida1.291.29----Miami
Virginia9.919.91----Arlington, Alexandria
District of Columbia3.483.48----Washington, D.C.
Maryland1.981.98----Baltimore
Connecticut54.6954.69-54.69--Norwich-New London
Massachusetts11.9111.91-11.91--Worcester
Maine4.994.99----Bangor
I-405California72.1572.15----Los Angeles
* Irvine
* Costa Mesa
* Huntingdon Beach
* Long Beach
* Torrance
* Inglewood
* Santa Monica
Oregon3.533.53----Portland
Washington30.330.3----Seattle
* Renton
* Bellevue
I-410Texas49.4949.49-9.93--San Antonio
I-430Arkansas12.9312.93----Little Rock
I-435Kansas28.0328.03----Kansas City
* Leawood
* Overland Park
* Shawnee
Missouri52.7852.78----Kansas City
* Grandview
* Raytown
* Independence
* Gladstone
I-440Arkansas9.969.96-9.96--Little Rock
Tennessee7.647.64----Nashville-Davidson
N. Carolina16.416.4-16.4--Raleigh
I-444Oklahoma2.512.51----Tulsa
I-459Alabama32.832.8----Birmingham
* Bessemer
* Bluff Park
* Homewood
I-464Virginia4.714.71----Virginia Beach
I-465Indiana57.5157.51-5.03--Indianapolis
I-469Indiana30.8330.83-30.83--Ft. Wayne, New Haven
I-470Kansas13.7213.72----Topeka
Missouri16.7216.72----Kansas City, Lee's Summit
* Independence
Ohio6.696.69----Wheeling (W.Va.-Ohio)
West Virginia3.943.94----Wheeling
I-471Kentucky5.025.02----Newport
Ohio0.730.73----Cincinnati
I-474Illinois14.8814.88----Peoria
I-475Georgia15.8315.83----Macon
Ohio20.3720.37----Toledo
Michigan16.9916.99----Flint
I-476Pennsylvania129.61129.61-110--Allentown-Bethlehem,
Philadelphia
* Ridley Park
* Marple
* Broomall
* Conshohocken
Scranton
I-478New York2.142.14-2.14--New York City
* Brooklyn
* Manhattan
I-480Nebraska4.154.15----Omaha
Iowa0.750.75----Council Bluffs
Ohio41.7741.77----Cleveland
* Bedford Heights
* Maple Heights
* Garfield Heights
* North Olmstead
* Parma
I-481New York15.0415.04----Syracuse
* DeWitt
I-485N. Carolina59.5559.55-59.55--Charlotte, Gastonia
I-490Ohio2.432.43----Cleveland
New York37.437.4----Rochester
I-494Minnesota42.9442.94----Minneapolis
* Bloomington
* Eden Prairie
* Maple Grove
* Minnetonka
I-495North Carolina4.094.09----Raleigh
Virginia15.2815.28----Washington, D.C.
* Springfield
* Annandale
* McLean
* Vienna
Maryland16.1316.13----Washington, D.C.
* Bethesda
* Wheaton
* Silver Spring
Delaware11.4711.47----Wilmington
* Claymont
New York66.3866.38-62.7--New York City *Manhattan
* Manhattan
* Queens
* Long Island
Massachusetts121.56121.5612.918.5--Barnstable Town, Boston, Lowell, Lawrence
Maine50.4750.47-50.47--Portland, Lewiston, Gardiner
I-496Michigan11.7811.78----Lansing
I-505California32.9832.98----Vacaville
I-510Louisiana3.043.04----New Orleans
I-515Nevada20.5420.54-14.9--Las Vegas
I-516Georgia6.496.49-6.49--Savannah
I-520Georgia16.1416.149.117.03--Augusta
South Carolina7.27.2-7.2--North Augusta, Belvedere
I-526S. Carolina19.2619.26-11.2--Charleston
* North Charleston
* Mount Pleasant
I-530Arkansas46.6546.65-46.65--Pine Bluff
I-535Minnesota1.571.57----Duluth
Wisconsin1.211.21----Superior
I-540Arkansas72.6772.67-5.9766.67-Ft. Smith, Fayetteville, Bentonville, Springdale, Rogers
N. Carolina27.327.3-27.3--Raleigh, Knightsdale
I-564Virginia3.033.03----Virginia Beach
I-565Alabama21.421.4----Huntsville
I-575Georgia30.9730.9729.16---Atlanta
I-579Pennsylvania1.571.57----Pittsburgh
I-580California75.6375.63-7.3--Concord, Livermore, San Francisco-Oakland, San Rafeal-Novato
Nevada30.06730.067-26.287--Reno
I-581Virginia6.646.64----Roanoke
I-585S. Carolina2.252.25----Spartanburg
I-587New York1.211.21----Kingston
I-590New York5.315.315.31---Rochester
I-595Maryland19.9719.9719.31---Washington, D.C.
* Bowie
Annapolis
Florida12.8612.86-8.8--Miami
I-605California27.427.4----Los Angeles
* Long Beach
* Lakewood
* Bellflower
* Norwalk
* Downey
* South Whittier
* El Monte
I-610Texas37.9737.97----Houston
Louisiana4.524.52----New Orleans
I-630Arkansas7.47.4----Little Rock
I-635Texas3737----Dallas
* Balch Springs
* Mesquite
Kansas8.98.9----Kansas City
Missouri3.773.77----Kansas City
I-640Tennessee7.037.03----Knoxville
I-664Virginia20.2120.21-9.2--Virginia Beach
I-670Kansas1.641.64----Kansas City
Missouri1.171.17----Kansas City
Ohio9.379.37----Columbus
I-675Georgia11.0411.047.78---Atlanta
Ohio26.5326.53----Dayton
Michigan7.727.72----Saginaw
I-676Pennsylvania2.152.15----Philadelphia
New Jersey4.754.75----Camden
I-678New York14.3314.33-7.8--New York City
* Queens
* Bronx
I-680California70.5270.52-12.5--San Jose, Milpitas, Freemont, Walnut Creek, Concord
Nebraska13.3213.32----Omaha
Iowa29.5419.63---9.91 Mi on I-29Omaha
Ohio16.4316.43----Youngstown
I-684New York27.0627.06----White Plains
Connecticut1.411.41----Bridgeport-Stamford
I-685Alabama140---14 Mi on I-85Montgomery
I-690New York14.1914.19----Syracuse
I-691Connecticut8.388.386.69---Hartford, New Haven
I-694Minnesota22.6221.97---0.65 Mi on I-35EMinnieapolis-St. Paul
* Maplewood
* Roseville
* Fridley
I-695District of Columbia22----Washington, D.C.
Maryland30.5730.57-2.2--Baltimore
* Dundalk
* Essex
* Rosedale
* Towson
* Catonsville
I-696Michigan29.3929.39----Detroit
* Warren
* Roseville
I-705Washington1.51.5----Seattle
I-710California19.6619.66-19.66--Los Angeles
* Long Beach
* Downey
* Compton
* East Los Angeles
I-759Alabama4.54.5----Gadsden
I-780California6.56.5----Vallejo
I-785North Carolina2.210---2.21 Mi on I-840 
I-787New York10.1610.16----Albany
I-790New York2.412.41----Utica
I-794Wisconsin3.753.75----Milwaukee
I-795Maryland8.998.99-5.47--Baltimore
* Pikesville
* Owings Mill
North Carolina25.425.4-25.4- Goldsboro
I-805California28.0228.02----San Diego
* Chula Vista
* National City
I-820Texas35.1735.17----Dalla-Ft. Worth-Arlington
I-840North Carolina5.772.21---3.56 Mi on I-73, 2.21 Mi on I-785Greensboro
I-878New York0.70.7----New York City
I-880California47.2247.22-47.22--San Jose, San Fracisco-Oakland
I-890New York9.359.35----Albany
I-894Wisconsin4.74.7----Milwaukee
* West Allis
* Wauwatosa
I-895Maryland11.4411.44----Baltimore
* Dundalk
New York1.121.12----New York City
* Bronx
I-910Louisiana9.79.7--9.7- 
I-980California2.032.03-1--Oakland
I-985Georgia24.0424.04-24.04--Gainesville
I-990New York6.356.35-2.04--Buffalo
* Amherst

Notes:

Total Miles - this column includes the original 42, 500 miles under former 23 USC 103(e)(1) & (3) plus the Howard-Cramer additions under former 23 USC 103(3)(2) and additions under 23 USC 103(c)(4)(A). It also includes mileage sections which overlap other Interstate routes.

Net Miles - this column does not include overlapping mileage.

Howard-Cramer Miles - this column shows mileage added to the system under former 23 USC 103(e)(2).

Section 103(c)(4)(A) Miles - this column shows mileage added to the system under 23 USC 103(c)(4)(A). It supersedes 23 USC 139(a) & 139(c).

Population figures are from the 2010 Census. Major Urban Areas Served means that the route either enters the Urban Area or approaches close enough to provide useful service.

Routes shown are those routes designated as of December 31, 2013.

In Maryland, I-595 has not yet been signed as an Interstate highway as of December 31, 2013

In Lousiana, I-910 has not yet been signed as an Interstate highway as of December 31, 2013

Updated: 01/15/2014
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