List of Iowa state highways

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Standard Iowa Highway shields
State: Highway X (IA X or Iowa X)
Interstates: Interstate X (I-X)
US Routes: U.S. Highway X (US X)
Notes: Iowa state highways are generally state-maintained.

Iowa DOT use the standard cicle sign shield for its state highways. 24 X 24 inch or 36 X 36 inch signs are used for all state and U.S. Highways regardless of number of digits. Iowa uses the same system as North Carolina when it comes to font usage - instead of the circle getting bigger, the font of the numbers gets smaller as more digits are added. The table below describes font usage in the state. Interstate route signage follows Interstate marker standards - using wider shields for 3-digit routes. Font type for Interstate markers is type D - sized to fit the shield. All Iowa interstate shields include the state name on the shields. [1]

Standard font types for Iowa state and U.S. Route shields[2]
Number of digits Font type
1 Type D
2 Type C
3 Type B

Contents

List of current routes

Interstate highways

Route South or west terminus North or east terminus Length
(mi)
I-29 I-29 at Hamburg I-29 at Sioux City 152
I-35 I-35 near Lamoni I-35 near Albert Lea, MN 219
I-74 I-80 at Davenport I-74 at Bettendorf 5.5
I-80 I-80 at Council Bluffs I-80 at Le Claire 307
I-129 I-129 at Sioux City I-29 at Sioux City 0.25
I-235 I-35 / I-80 at West Des Moines I-35 / I-80 at Des Moines 14
I-280 I-80 at Des Moines I-280 at Davenport 9.5
I-380 I-80 / US 218 / IA 27 near Coralville US 218 at Waterloo 73
I-480 I-480 at Council Bluffs US 6 at Council Bluffs 0.75
I-680 I-680 at Omaha, NE I-80 near Neola 29

U.S. Highways

Route South or west terminus North or east terminus Length
(mi)
US 6 US 6 at Council Bluffs US 6 at Bettendorf 320
US 18 US 18 near Canton, SD US 18 at Marquette 310
US 20 US 20 at Sioux City US 20 at Dubuque 305
US 30 US 30 at Blair, NE US 30 at Clinton 331
US 34 US 34 at Plattsmouth, NE US 34 at Burlington 265
US 52 US 52 at Sabula US 52 near Prosper, MN 167
US 59 US 59 near Shenandoah US 59 near Bigelow, MN 215
US 61 US 61 near Keokuk US 61 at Dubuque 196
US 63 US 63 near Lancaster, MO US 63 near Chester 236
US 65 US 65 at Lineville US 65 near Northwood 238
US 67 US 67 at Davenport US 52 / IA 64 near Sabula 57
US 69 US 69 near Lamoni US 69 at Emmons, MN 228
US 71 US 71 at Braddyville US 71 near Superior 232
US 75 US 75 at Sioux City US 75 near Rock Rapids 80
US 77 US 77 at Sioux City I-29 at Sioux City 0.4
US 136 US 136 near Keokuk US 136 at Keokuk 3.6
US 151 I-80 near the Amana Colonies US 151 at Dubuque 108
US 169 US 169 near Redding US 169 at Elmore, MN 235
US 218 US 136 at Keokuk US 218 at Lyle, MN 274
US 275 US 275 at Hamburg US 275 at Council Bluffs 58

Iowa state highways

Route South or west terminus North or east terminus Length
(mi)		 Notes
IA 1 IA 2 near Keosauqua US 151 near Anamosa 120
IA 2 N-2 near Nebraska City, NE IL 9 at Fort Madison 258
IA 3 SD 50 near Westfield US 52 / US 61 / US 151 at Dubuque 328
IA 4 IA 44 at Panora TH 4 near Estherville 146
IA 5 Route 5 near Cincinnati I-35 at West Des Moines 105
IA 7 IA 3 near Aurelia US 169 near Fort Dodge 74
IA 8 US 63 at Traer US 218 near Garrison 14
IA 9 SD 42 near Larchwood WIS 82 at Lansing 296
IA 10 SD 46 near Hawarden IA 4 at Havelock 105
IA 12 I-29 at Sioux City IA 10 at Hawarden 39
IA 13 US 30 / US 151 near Bertram US 52 near Froelich 85
IA 14 IA 2 at Corydon US 18 / US 218 Bus. at Charles City 188
IA 15 IA 3 near Pocahontas TH 15 near Armstrong 64
IA 16 US 34 near Agency US 61 at Wever 65
IA 17 IA 141 at Granger US 18 near Wesley 103
IA 21 IA 149 near Hedrick US 20 at Waterloo 97
IA 22 IA 21 near Thornburg US 61 at Davenport 98
IA 23 IA 92 near Oskaloosa IA 149 near Fremont 16
IA 24 US 18 / US 63 at New Hampton US 52 / IA 150 at Calmar 27
IA 25 IA 2 near Benton US 30 near Scranton 103
IA 26 IA 9 at Lansing TH 26 – New Albin 11
IA 27 Route 27 at St. Francisville, MO I-35 at the Minnesota state line 282
IA 28 IA 92 at Martensdale I-35 / I-80 at Des Moines 22
IA 31 US 59 near Quimby IA 141 near Smithland 38
IA 32 US 20 at Dubuque US 52 / IA 3 at Sageville 5.1
IA 37 IA 175 near Turin US 59 near Earling 40
IA 38 IA 92 at Muscatine IA 3 near Edgewood 99
IA 39 US 59 at Denison IA 175 at Odebolt 24
IA 44 US 30 near Logan IA 141 at Grimes 105
IA 48 US 59 at Shenandoah US 6 near Lewis 48
IA 51 US 18 at Postville IA 9 at Waukon 11
IA 56 IA 150 at West Union IA 13 at Elkader 24
IA 57 US 65 near Iowa Falls US 218 / IA 27 / IA 58 at Cedar Falls 44
IA 58 US 63 at Hudson US 218 IA 27 / IA 57 at Cedar Falls 12
IA 60 US 75 at Le Mars TH 60 at Bigelow, MN 56
IA 62 IA 64 at Maquoketa US 52 at Bellevue 20
IA 64 US 151 near Anamosa IL 64 at Savanna, IL 64
IA 70 IA 92 at Columbus Junction US 6 near West Liberty 24
IA 76 US 18 near McGregor TH 76 near Eitzen, MN 49
IA 78 IA 149 near Martinsburg US 61 near Morning Sun 59
IA 81 Route 81 near Farmington IA 2 at Farmington 2.2
IA 83 US 59 at Avoca IA 148 at Anita 34
IA 85 Montezuma city limits IA 21 at Deep River 8.4
IA 86 US 71 near Milford TH 86 near Spirit Lake 13
IA 92 N-92 at Council Bluffs IL 92 at Muscatine 275
IA 93 US 63 near Tripoli IA 150 at Fayette 30
IA 96 IA 14 near Gladbrook US 63 near Gladbrook 17
IA 98 IA 16 near Douds Clay Street in Leando 1.8 Spur route.
IA 100 Edgewood Road – Cedar Rapids US 151 / IA 13 near Marion 8.3
IA 102 New Sharon city limits US 63 / IA 146 at New Sharon 0.5 Formerly extended to Pella.[3]
IA 110 US 20 at Schaller IA 7 at Storm Lake 15
IA 116 US 218 near Waverly IA 3 at Waverly 2.6 US 218 Bus. in Waverly.
IA 117 US 163 at Prairie City US 65 IA 330 near Mingo 18
IA 122 I-35 / US 18 at Clear Lake Mason City city limits 13
IA 127 I-29 near Mondamin US 30 at Logan 16
IA 128 IA 13 at Elkader US 52 near Garnavillo 7
IA 130 IA 38 at Tipton I-80 at Davenport 32
IA 136 IL 136 at Clinton US 52 / IA 3 at Luxemburg 98
IA 137 IA 5 at Albia US 63 at Eddyville 14
IA 139 IA 9 near Cresco TH 139 near Harmony, MN 11
IA 140 US 20 at Moville IA 3 at Remsen 25
IA 141 I-29 at Sloan I-35 / I-80 at Grimes 156
IA 143 IA 3 at Marcus IA 10 at Granville 12
IA 144 IA 141 at Perry IA 175 near Harcourt 34
IA 146 US 63 at New Sharon US 30 at Le Grand 43
IA 148 Route 148 near Bedford I-80 near Anita 67
IA 149 US 34 / US 63 at Ottumwa I-80 near Williamsburg 61
IA 150 US 218 at Vinton US 52 / IA 24 at Calmar 85
IA 152 I-35 near Osceola US 69 near Osceola 1.4
IA 160 IA 415 at Ankeny I-35 at Ankeny 2.4
IA 163 US 69 at Des Moines US 63 at Oskaloosa 61
IA 165 Nebraska state line at Carter Lake Nebraska state line at Carter Lake 0.5 Only route west of the Missouri River.
IA 173 IA 83 near Atlantic IA 44 at Kimballton 15
IA 175 N-51 at Decatur, NE US 63 at Hudson 221
IA 182 US 18 at Inwood IA 9 near Larchwood 9.1
IA 183 IA 127 at Mondamin IA 141 at Ute 31
IA 187 US 20 near Masonville IA 150 near Fayette 28
IA 188 IA 3 near Clarksville US 63 near Tripoli 24
IA 191 I-680 near Neola IA 37 at Earling 23
IA 192 I-29 / I-80 at Council Bluffs I-29 at Council Bluffs 5.2
IA 196 US 71 / IA 175 at Lake View US 20 near Sac City 7.8
IA 202 Route 202 near Coatsville, MO IA 2 near Moulton 10.5
IA 210 IA 141 near Woodward US 65 near Collins 35
IA 212 IA 21 near Belle Plaine US 6 at Marengo 12
IA 220 US 6 at South Amana US 151 at Amana 7.2
IA 224 I-80 near Kellogg IA 14 near Laurel 10
IA 281 Waterloo IA 150 at Oelwein 28
IA 296 Norwalk city limits IA 28 at Norwalk 0.3 Former IA 28.[4]
IA 316 IA 5 near Swan near Runnells 5.2 Spur route.
IA 330 US 65 / IA 117 near Mingo IA 14 near Albion 33
IA 333 I-29 at Hamburg US 275 at Hamburg 1.6
IA 340 Batavia Batavia 1.1 Former US 34 in Batavia.[5]
IA 346 US 218 / IA 27 at Nashua US 18 / US 63 near New Hampton 12
IA 370 N-370 at Bellevue, NE I-29 near Council Bluffs 3.2
IA 376 I-29 at Sioux City US 75 at Sioux City 10 US 75 Bus. in Sioux City.
IA 415 IA 141 near Granger US 6 at Des Moines 17
IA 431 Le Grand city limits IA 146 at Le Grand 0.2 Former US 30 west of IA 146.[6]
IA 438 US 34 at Mount Pleasant US 218 / IA 27 at Mount Pleasant 0.7 Former US 218/IA 27.[7]
IA 460 Donnellson city limits Donnellson city limits 1.3 Former US 218/US 27 in Donnellson.[8]
IA 922 US 151 at Cedar Rapids IA 100 at Cedar Rapids 8.9 US 151 Bus. in Cedar Rapids.
IA 926 US 169 at Fort Dodge US 169 at Fort Dodge 3.1 US 169 Bus. in Fort Dodge.
IA 930 US 30 near Ames near Ames Boone / Story County line 1.9 Spur route.
IA 934 IA 27 / IA 58 at Cedar Falls US 63 at Waterloo 4.8 University Avenue.[9][10]
IA 946 US 52 / US 61 / US 151 at Dubuque US 52 / US 61 / US 151 at Dubuque 0.7 Provides direct access to US 20.[11]
IA 965 US 6 at Coralville I-80 at Coralville 0.4 Provides direct access to I-80.[12]

Deleted highways

Some routes list a city as a terminus. In these cases the ending is generally either at the corporate limits or center of the city.

Route South or west terminus North or east terminus Deleted Notes
US 30A US 30 / US 67 at Clinton US 30A at Fulton, IL 1967 Replaced by IA 136
US 30A US 30A at Omaha, NE US 30 at Missouri Valley 1969 Replaced by IA 183
US 30S US 30S at Omaha, NE US 30 at Missouri Valley 1934 Replaced by US 30A
US 32 US 30 in Council Bluffs US 32 at Rock Island, IL 1931 Replaced by US 6
IA 36 Wall Lake US 71 2003
IA 40 Allerton IA 2 2003
IA 41 Malvern US 34 2003
IA 45 US 59 Manilla 2003
IA 49 IA 2 US 34 2003
IA 50 US 169 Lehigh 2003
US 55 US 6 in Davenport Minnesota state line 1934 Replaced by US 52 and US 67
IA 55 Seymour IA 2 2003
IA 66 IA 2 Diagonal 2003
IA 68 Melrose US 34 2003
IA 77 IA 92 Keota 2003
IA 79 Geode State Park US 34 2003
I-80N Nebraska border near Omaha, NE I-80 near Neola 1973 Replaced by I-680
IA 82 Blairstown US 30 2003
IA 91 IA 9 TH 91 2003
IA 94 US 151 Bus. Palo 2003
IA 97 Russell US 34 2003
IA 99 US 34 US 61 2003
IA 103 US 218 US 61 / IA 2 2003
IA 105 US 69 US 218 1992
IA 107 IA 3 US 18 2003
IA 109 Oxford US 6 2003
IA 113 IA 64 Spragueville 2003
IA 115 US 34 Viking Lake State Park 2003
IA 124 IA 17 Twin Lakes State Park 2003
IA 131 IA 21 US 30 2003