List of state highways in Iowa
![]() ![]() ![]() ![]() Highway markers from different years | |
Highway names | |
---|---|
Interstates | Interstate nn (I-nn) |
US Highways | U.S. Highway nn (US nn) |
State | Iowa nn |
System links | |
State highways in the U.S. state of Iowa are owned and maintained by the Iowa Department of Transportation.
State highways
[edit]Number | Length (mi)[1][2] | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes |
---|---|---|---|---|---|---|---|
![]() | 236[3] | 380 | Missouri state line near Lamoni | Minnesota state line near Northwood | 1920 | 1926 | Jefferson Highway through Iowa; replaced by US 65 and US 69 |
![]() | 119.268 | 191.943 | Iowa 2 south of Keosauqua | US 151 south of Anamosa | 1926 | current | |
![]() | 233.80[4] | 376.26 | US 6 near Lewis | IL 2 at Muscatine | 1920 | 1939 | Renumbered Iowa 92 (renumbering approved 1938) |
![]() | 251.376 | 404.550 | N-2 at Nebraska City, Neb. | US 61 at Fort Madison | 1941 | current | Formerly Iowa 3 |
![]() | 267.07[4] | 429.81 | N-2 at Nebraska City, Neb. | IL 9 at Fort Madison | 1920 | 1941 | Renumbered Iowa 2 |
![]() | 323.102 | 519.982 | SD 50 near Westfield | Northwest Arterial at Dubuque | 1945 | current | Replaced part of Iowa 5, all of Iowa 221, and part of Iowa 10 |
![]() | 29.70[5] | 47.80 | US 59 / Iowa 141 at Denison | Iowa 175 at Odebolt | 1920 | 1968 | Renumbered Iowa 39 |
![]() | 146.343 | 235.516 | Iowa 44 in Panora | MN 4 near Estherville | 1969 | current | Formerly Iowa 17 |
![]() | 77.64[5] | 124.95 | Iowa 3 near Aurelia | US 169 at Fort Dodge | 1920 | 1968 | Renumbered Iowa 7 |
![]() | 103.540 | 166.631 | Route 5 south of Cincinnati | I-35 near West Des Moines | 1969 | current | Formerly portion of Iowa 60 |
![]() | 369[3] | 594 | Nebraska state line at Council Bluffs | Illinois state line at Clinton | 1920 | 1926 | Lincoln Highway through Iowa; replaced by US 30 |
![]() | 104 | 167 | Route 5 near Cincinnati | US 32 in Des Moines | 1926 | 1931 | Formerly No. 17 and No. 59; became part of Iowa 60 when US 6 extended into Iowa |
![]() | 140.69[4] | 226.42 | US 6 at Council Bluffs | City US 6 in Des Moines | 1920 | 1939 | Replaced by an extended Iowa 64 |
![]() | 0.47[6] | 0.76 | Iowa 99 in Oakville | Oakville | 1955 | 1957 | Renumbered Iowa 407; spur route |
![]() | 24.18[5] | 38.91 | I-29 / US 77 in Sioux City | Iowa 3 near Brunsville | 1957 | 1968 | Formerly Iowa 29; portion became Iowa 985 |
![]() | 73.661 | 118.546 | Iowa 3 near Aurelia | US 169 at Fort Dodge | 1969 | current | Formerly Iowa 5 |
![]() | 283[3] | 455 | No. 6 in Council Bluffs | Illinois state line at Burlington | 1920 | 1926 | Replaced by US 34 |
![]() | 13.961 | 22.468 | US 63 in Traer | US 218 near Garrison | 1926 | current | |
![]() | 295.088 | 474.898 | SD 42 near Larchwood | WIS 82 at Lansing | 1920 | current | |
![]() | 104.512 | 168.196 | SD 46 near Hawarden | Iowa 4 at Havelock | 1920 | current | |
![]() | 96.60[4] | 155.46 | US 151 / Iowa 64 in Cedar Rapids | US 52 / Iowa 24 in Calmar | 1920 | 1941 | Replaced by Iowa 150, which was proposed to become part of US 150 |
![]() | 46.274 | 74.471 | US 20 / US 75 at Sioux City | Iowa 10 in Hawarden | 1920 | current | Signed as US 20 Bus through Sioux City |
![]() | 85.235 | 137.172 | US 30 / US 151 near Bertram | US 52 near Froelich | 1920 | current | |
![]() | 187.838 | 302.296 | Iowa 2 at Corydon | US 18 / US 218 Bus in Charles City | 1920 | current | |
![]() | 111 | 179 | US 30 in Ames | Minnesota state line near Lake Mills | 1920 | 1935 | Replaced by US 69 |
![]() | 14.92[5] | 24.01 | Iowa 137 at Eddyville | US 63 in Ottumwa | 1937 | 1968 | Renumbered Iowa 23 |
![]() | 4.655 | 7.491 | Route 15 south of Milton | Iowa 2 at Milton | 1969 | 2003 | Formerly Iowa 23 |
![]() | 63.578 | 102.319 | Iowa 3 near Pocahontas | MN 15 near Armstrong | 1969 | current | Formerly Iowa 44 |
![]() | 239 | 385 | Missouri state line near Redding | Minnesota state line near Ledyard | 1920 | 1930 | Replaced by US 169 |
![]() | 65.488 | 105.393 | US 34 near Agency | US 61 at Wever | 1930 | current | |
![]() | 147.48[5] | 237.35 | Iowa 64 in Panora | MN 4 near Estherville | 1920 | 1968 | Renumbered Iowa 4 |
![]() | 102.789 | 165.423 | Iowa 141 at Granger | US 18 near Wesley | 1969 | current | Formerly portion of Iowa 60 |
![]() | 148 | 238 | Missouri state line at Braddyville | No. 23 at Sac City | 1920 | 1926 | Replaced by US 71 |
![]() | 302 | 486 | South Dakota state line near Inwood | Wisconsin state line at Lansing | 1920 | 1926 | East end truncated to US 75 for a month in 1926; replaced by US 18 |
![]() | 2.44[6] | 3.93 | Backbone State Park | Iowa 3 / Iowa 13 near Strawberry Point | 1927 | 1957 | Renumbered Iowa 410 |
![]() | 324[3] | 521 | Illinois state line at Keokuk | Minnesota state line near Burr Oak | 1920 | 1926 | Replaced by US 61 and US 55 |
![]() | 115 | 185 | Minnesota state line near Allendorf | Iowa 141 near Denison | 1920 | 1934 | Replaced by Iowa 73 (proposed US 73) |
![]() | 97.152 | 156.351 | Iowa 149 near Hedrick | US 20 / Iowa 27 at Waterloo | 1934 | current | Formerly ended at Iowa 92; extended south in 1980 |
![]() | 34[3] | 55 | No. 5 at Le Mars | Minnesota state line north of Rock Rapids | 1920 | 1926 | Replaced by US 75 |
![]() | 97.905 | 157.563 | Iowa 21 near Thornburg | US 61 at Davenport | 1926 | current | |
![]() | 130[3] | 210 | South Dakota state line at Sioux City | No. 16 at Fort Dodge | 1920 | 1926 | Replaced by US 20 |
![]() | 4.78[5] | 7.69 | Route 15 south of Milton | Iowa 2 at Milton | 1926 | 1968 | Formerly part of No. 11; renumbered Iowa 15 |
![]() | 14.316 | 23.039 | US 63 in Ottumwa | Iowa 137 at Eddyville | 1969 | 1997 | Formerly Iowa 15; partially replaced by US 63 |
![]() | 16.022 | 25.785 | Iowa 92 at Oskaloosa | Iowa 149 near Fremont | 1997 | current | Formerly US 63 |
![]() | 127 | 204 | US 71 near Lyman | US 63 in Oskaloosa | 1920 | 1927 | Replaced by an extended Iowa 2 |
![]() | 27.546 | 44.331 | US 18 / US 63 in New Hampton | US 52 / Iowa 150 in Calmar | 1928 | current | |
![]() | 20 | 32 | No. 15 / No. 24 at Winterset | No. 2 / No. 17 at Adel | 1920 | 1926 | Replaced by relocated Iowa 16 |
![]() | 103.419 | 166.437 | Iowa 2 near Benton | US 30 near Scranton | 1926 | current | Continued south to the Missouri state line until 1978, and to Blockton until 1980 |
![]() | 10 | 16 | US 18 near Rock Valley | US 18 near Rock Valley | 1920 | 1930 | Replaced by relocated US 18 (portions were cancelled in exchange for relocated US 18) |
![]() | 9.52[5] | 15.32 | US 18 in Inwood | Iowa 9 near Larchwood | 1930 | 1968 | Renumbered Iowa 182 |
![]() | 11.370 | 18.298 | Iowa 9 in Lansing | MN 26 at New Albin | 1969 | current | Formerly Iowa 182 |
![]() | 21.2 | 34.1 | Iowa 12 in Akron | US 75 in Le Mars | 1920 | 1929 | Replaced by an extended Iowa 5 |
![]() | 11 | 18 | Nebraska border | US 30 / US 75 in Missouri Valley | 1929 | 1930 | Renumbered Iowa 130 |
![]() | 6.86[7] | 11.04 | Alvord | US 75 near Rock Rapids | 1930 | 1980 | Spur route; originally from US 75 to George |
![]() ![]() | 281.689 | 453.335 | Route 27 near Wayland, Mo. | I-35 at the Minnesota state line | 2001 | current | Avenue of the Saints |
![]() | 72[3] | 116 | No. 6 / No. 11 in Cedar Rapids | No. 5 / No. 20 in Dubuque | 1920 | 1926 | Replaced by US 161 |
![]() | 21.613 | 34.783 | Iowa 92 at Martensdale | I-35 / I-80 at Johnston | 1926 | current | Previously ended at Iowa 5; extended to US 6 in 1980, and to I-80 in 1991 |
![]() | 22.06[6] | 35.50 | I-29 / US 77 in Sioux City | Iowa 3 near Brunsville | 1920 | 1957 | Renumbered Iowa 7 when I-29 was designated |
![]() | 25 | 40 | No. 23 at Moville | No. 5 at Remsen | 1920 | 1926 | Renumbered Iowa 140 |
![]() | 38.504 | 61.966 | US 59 near Quimby | Iowa 141 near Smithland | 1920 | current | |
![]() | 5 | 8.0 | No. 5 near Cleghorn | Cleghorn | 1920 | 1926 | Renumbered Iowa 145 |
![]() | 7.68 | 12.36 | Iowa 9 near Spirit Lake | US 71 near Milford | 1934 | 1981 | extended and renumbered Iowa 86 to match Minnesota |
![]() | 5.101[7] | 8.209 | US 20 at Dubuque | US 52 / Iowa 3 at Sageville | 1995 | 2021 | Turned over to Dubuque after the US 52 Southwest Arterial opened |
![]() | 3.4 | 5.5 | Meriden | Iowa 5 | 1920 | 1930 | Became a county road (now L51) due to rerouting of Iowa 5 between Iowa 143 and Cherokee |
![]() | 55.95[5] | 90.04 | US 75 at Le Mars | MN 60 at Bigelow, Minn. | 1930 | 1968 | Renumbered Iowa 60 |
![]() | 68 | 109 | No. 4 at Denison | No. 12 at Sioux City | 1920 | 1926 | Renumbered Iowa 141 |
![]() | 49.00[8] | 78.86 | Iowa 37 near Turin | US 71 near Odebolt | 1920 | 1948 | Replaced by an extended Iowa 175 |
![]() | 0.23[6] | 0.37 | US 18 near Garner | Garner | 1954 | 1957 | Spur route; renumbered Iowa 409 when I-35 was designated |
![]() | 2.983 | 4.801 | Wall Lake | US 71 near Wall Lake | 1920 | 2003 | Spur route; now County Roads M64 (north-south section) and D59 (east-west section) |
![]() | 40.321 | 64.890 | Iowa 175 near Turin | US 59 near Earling | 1920 | current | Continued east to Irwin until 1982 |
![]() | 98.941 | 159.230 | US 61 Bus / Iowa 92 in Muscatine | Iowa 3 near Edgewood | 1920 | current | |
![]() | 11.68[5] | 18.80 | US 30 near Logan | Iowa 64 / Iowa 191 at Portsmouth | 1920 | 1968 | Renumbered Iowa 44 |
![]() | 24.321 | 39.141 | US 59 at Denison | Iowa 175 at Odebolt | 1969 | current | Formerly Iowa 4 |
![]() | 262[3] | 422 | No. 20 in Keokuk | Minnesota state line near Mona | 1920 | 1926 | Replaced by US 161, US 20, US 30, and US 218; the entire route is now US 218 |
![]() | 3.524 | 5.671 | Allerton | Iowa 2 near Corydon | 1926 | 2003 | Spur route; now County Road S26 |
![]() | 1.827 | 2.940 | Malvern | US 34 near Malvern | 1920 | 2003 | Spur route; now County Road L63 |
![]() | 4.18 | 6.73 | US 275 / Iowa 2 near Riverton | Riverton | 1920 | 1980 | Spur route; now County Road J46 |
![]() | 1.75 | 2.82 | Ringsted | Iowa 15 near Ringsted | 1920 | 1980 | Spur route; now a local road and County Road A34 |
![]() | 63.95[5] | 102.92 | Iowa 3 near Pocahontas | MN 15 near Armstrong | 1920 | 1968 | Renumbered Iowa 15 |
![]() | 104.524 | 168.215 | US 30 near Logan | Iowa 141 at Grimes | 1969 | current | Formerly Iowa 39 and Iowa 64 |
![]() | 1.324 | 2.131 | Manilla | Iowa 141 near Manilla | 1920 | 2003 | Spur route; now County Road M65 |
![]() | 64.84[4] | 104.35 | US 59 near Denison | Iowa 17 (now Iowa 144) in Perry | 1920 | 1941 | Originally a double spur route; replaced by an extended Iowa 141 |
![]() | 4.34 | 6.98 | Iowa 90 in Des Moines | Iowa 28 (now Army Post Road) in Des Moines | 1942 | 1950 | Now 9th Street, Mulberry Street, and 7th Street |
![]() | 6.57[9] | 10.57 | Iowa 5 near Avon | Iowa 163 in Des Moines | 1953 | 1998 | Now city streets |
![]() | 13 | 21 | Iowa 287 in Farnhamville | US 169 near Harcourt | 1920 | 1940 | Spur route; replaced by an extended Iowa 175 |
![]() | 0.82 | 1.32 | Iowa 14 near Allison | Allison | 1941 | 1980 | Spur route; now 7th Street |
![]() | 47.919 | 77.118 | US 59 at Shenandoah | US 6 near Lewis | 1920 | current | |
![]() | 27.228 | 43.819 | Iowa 2 in Bedford | US 34 in Adams County | 1920 | 2003 | Was originally a spur route from US 34 to Lenox; now County Roads N64, J23, N52, J35, and N44 (in order from US 34 to Iowa 2) |
![]() | 7.135 | 11.483 | US 169 near Lehigh | Lehigh | 1920 | 2003 | Spur route; now County Road D43 |
![]() | 11.007 | 17.714 | US 18 / US 52 at Postville | Iowa 9 near Waukon | 1920 | current | |
![]() | 7[10] | 11 | Elma | US 63 east of Elma | 1920 | 1934 | Spur route; renumbered Iowa 272 when US 52 extended into Iowa |
![]() | 13 | 21 | No. 14 near Rockford | No. 19 near Nora Springs | 1920 | 1926 | Renumbered Iowa 147 to avoid conflict with US 53 (which became US 55 in the revised numbering plan; see below) |
![]() | 3.04[8] | 4.89 | Iowa 3 near Clarksville | Clarksville | 1926 | 1949 | Formerly No. 55; became part of Iowa 188 |
![]() | 1.43[11] | 2.30 | Gowrie | Iowa 175 near Gowrie | 1953 | 1969 | Spur route; now local roads (Market and 4th Streets) |
![]() | 2.99 | 4.81 | Marble Rock | Iowa 14 in Floyd County | 1920 | 1980 | Spur route; now County Road B60 |
![]() | 3 | 4.8 | No. 10 near Clarksville | Clarksville | 1920 | 1926 | Renumbered Iowa 53 to avoid conflict with US 55 |
![]() | 4.506 | 7.252 | Seymour | Iowa 2 near Promise City | 1934 | 2003 | Spur route; now County Road S60 |
![]() | 24.432 | 39.319 | Iowa 150 at West Union | Iowa 13 at Elkader | 1920 | current | |
![]() | 18.41[12] | 29.63 | Iowa 14 near Fern | Iowa 58 in Cedar Falls | 1920 | 1986 | Section from Iowa 58 to US 20 was deleted in 1980; removed after US 20 freeway was constructed |
![]() | 43.765 | 70.433 | US 65 near Iowa Falls | US 218 / Iowa 27 / Iowa 58 at Cedar Falls | 1986 | current | Formerly US 20 |
![]() | 12.030 | 19.360 | US 63 at Hudson | US 218 / Iowa 27 / Iowa 57 at Cedar Falls | 1920 | current | |
![]() | 197[10] | 317 | Minnesota state line | Iowa 5 at Albia | 1920 | 1934 | Replaced by US 63 and Iowa 137 |
![]() | 233.24[5] | 375.36 | Route 5 south of Cincinnati | US 18 near Wesley | 1920 | 1968 | Renumbered Iowa 5 and Iowa 17 |
![]() | 58.771 | 94.583 | US 75 at Le Mars | MN 60 at Bigelow, Minn. | 1969 | current | Formerly Iowa 33 |
![]() | 73 | 117 | No. 28 at Anamosa | No. 6 in Lyons | 1920 | 1926 | Renumbered Iowa 117 and Iowa 136 |
![]() | 19.633 | 31.596 | Iowa 64 at Maquoketa | US 52 in Bellevue | 1920 | current | |
![]() | 24 | 39 | No. 59 in New Sharon | No. 7 in Grinnell | 1920 | 1926 | Renumbered Iowa 146 |
![]() | 32 | 51 | Iowa 163 at Prairie City | US 30 in Colo | 1920 | 1936 | Renumbered Iowa 117 |
![]() | 64.355 | 103.569 | US 151 at Anamosa | US 52 / IL 64 at Savanna, Ill. | 1939 | current | Formerly Iowa 117 |
![]() | 21 | 34 | No. 8 at Lucas | No. 1 south of Indianola | 1920 | 1926 | Renumbered Iowa 137 |
![]() | 7 | 11 | Humeston | Iowa 3 near Humeston | 1920 | 1930 | Spur route; replaced by an extended Iowa 137 |
![]() | 7.011 | 11.283 | Iowa 2 near Diagonal | Diagonal | 1930 | 2003 | Spur route; now County Road P33 |
![]() | 6[10] | 9.7 | Seymour | Iowa 3 near Promise City | 1920 | 1934 | Spur route; renumbered Iowa 55 when US 67 extended into Iowa |
![]() | 1.933 | 3.111 | Melrose | US 34 near Melrose | 1920 | 2003 | Spur route; now County Road S70 |
![]() | 3 | 4.8 | No. 3 near Mystic | Mystic | 1920 | 1926 | Renumbered Iowa 138 |
![]() | 8.20[5] | 13.20 | Macksburg | US 169 near Macksburg | 1920 | 1966 | Spur route; now County Road G41 |
![]() | 23.954 | 38.550 | Iowa 92 at Columbus Junction | US 6 in West Liberty | 1969 | current | Formerly Iowa 76 |
![]() | 3 | 4.8 | Moulton | No. 3 near Moulton | 1920 | 1926 | Renumbered Iowa 142 |
![]() | 10.89[12] | 17.53 | US 69 west of Dows | I-35 east of Dows | 1920 | 1986 | Originally a spur route; extended east from Dows to I-35 in 1980 |
![]() | 35.9 | 57.8 | Iowa 8 in Dysart | US 6 in Marengo | 1920 | 1934 | Renumbered Iowa 212 to avoid conflict with new Iowa 73, which was proposed to become part of US 73 |
![]() | 225 | 362 | Missouri state line south of Shenandoah | Minnesota state line near Allendorf | 1934 | 1935 | Was proposed to become part of US 73; replaced by US 59 |
![]() | 14.97[13] | 24.09 | Iowa 141 in Coon Rapids | Iowa 44 | 1936 | 1972 | Became County Road N46 |
![]() | 38.27[4] | 61.59 | Iowa 38 in Tipton | US 61 in Davenport | 1920 | 1941 | Replaced by Iowa 150, which was proposed to become part of US 150 |
![]() | 11.168 | 17.973 | US 151 in Cedar Rapids | Palo | 1943 | 1966 | Spur route; renumbred Iowa 94 when I-74 was designated |
![]() | 2 | 3.2 | No. 5 near Marcus | Marcus | 1920 | 1926 | Renumbered Iowa 143 |
![]() | 25.98[5] | 41.81 | Columbus City | US 6 in West Liberty | 1920 | 1968 | Renumbered Iowa 70 |
![]() | 48.911 | 78.715 | US 18 near McGregor | MN 76 near Eitzen, Minn. | 1969 | current | Formerly portion of Iowa 13 |
![]() | 2.685 | 4.321 | Iowa 92 near Keota | Keota | 1920 | 2003 | Spur route, continued south to Iowa 78 until 1980; now County Road W15 and a local road |
![]() | 58.429 | 94.032 | Iowa 149 near Martinsburg | US 61 near Morning Sun | 1920 | current | |
![]() | 1.84 | 2.96 | Iowa 2 near Bonaparte | Bonaparte | 1920 | 1980 | Spur route; now County Road W40 |
![]() | 5.637 | 9.072 | Geode State Park | US 34 in Middletown | 1980 | 2003 | Park access road; was a county road before commissioning and returned to a county road; initially known as County Road 79 until 2005 when it became J20 |
![]() | 4.00[6] | 6.44 | US 34 near West Burlington | US 61 in Burlington | 1920 | 1957 | Spur route; renumbered Iowa 406 when I-80 was designated |
![]() | 9.20[5] | 14.81 | Iowa 92 near West Chester | Iowa 22 at Wellman | 1920 | 1968 | Renumbered Iowa 114 |
![]() | 2.215 | 3.565 | Route 81 near Farmington | Iowa 2 near Farmington | 1969 | current | Formerly Iowa 114 |
![]() | 3.773 | 6.072 | Blairstown | US 30 near Blairstown | 1920 | 2003 | Spur route; now County Road V66 |
![]() | 34.191 | 55.025 | US 59 in Avoca | Iowa 148 in Anita | 1920 | current | Continued west to Neola until 2003 |
![]() | 6.09[8] | 9.80 | College Springs | US 71 near Shambaugh | 1920 | 1943 | Spur route; replaced by an extended Iowa 333 |
![]() | 2.13 | 3.43 | Eastern Iowa Airport | I-380 near Cedar Rapids | 1943 | 1980 | Airport access road; now County Road E70 |
![]() | 8.408 | 13.531 | Montezuma city limits | Iowa 21 near Deep River | 1920 | current | |
![]() | 4 | 6.4 | US 34 in Council Bluffs | Lake Manawa | 1920 | 1928 | Spur route; restored in 1931 as Iowa 241, later Iowa 192 |
![]() | 3.7 | 6.0 | US 61 (now Sunnyside Avenue) in Burlington | US 61 (now Summer Street) in Burlington | 1929 | 1945 | Now Roosevelt Avenue and West Avenue |
![]() | 0.47 | 0.76 | Fertile | Iowa 9 at Fertile | 1945 | 1980 | Spur route |
![]() | 12.519 | 20.147 | US 71 near Milford | MN 86 near Spirit Lake | 1980 | current | |
![]() | 4.06[14] | 6.53 | US 69 west of Elkhart | Elkhart | 1920 | 1983 | Spur route |
![]() | 37.65[4] | 60.59 | US 6 in Altoona | US 30 near Marshalltown | 1920 | 1939 | Originally a spur route; replaced by an extended Iowa 64 |
![]() | 8.01 | 12.89 | US 61 / Iowa 2 in Fort Madison | Iowa 16 in Denmark | 1940 | 1980 | Originally a spur route |
![]() | 25.87[4] | 41.63 | US 169 near Bouton | Iowa 64 in Johnston | 1920 | 1941 | Originally a spur route; replaced by an extended Iowa 141 |
![]() | 7.69 | 12.38 | Iowa 141 near Woodward | Iowa 17 in Madrid | 1946 | 1980 | Replaced by an extended Iowa 210 |
![]() | 40 | 64 | No. 17 near Bouton | No. 16 at Harcourt | 1920 | 1926 | Replaced by relocated Iowa 16 (now US 169) |
![]() | 16 | 26 | Iowa 14 at Grundy Center | Iowa 59 near Voorhies | 1926 | 1932 | Formerly No. 58; became part of Iowa 58 again |
![]() | 16.32[15] | 26.26 | I-80 in Dallas County | I-35 in Des Moines | 1932 | 1981 | Now County Road F90; section in Polk County maintained as unsigned Iowa 934 until 1989 |
![]() | 2.69[4] | 4.33 | US 169 near Harcourt | Dayton | 1920 | 1940 | Spur route; replaced by an extended Iowa 175 |
![]() | 4.18 | 6.73 | Ledyard | US 169 near Ledyard | 1940 | 1980 | Spur route; now County Road A30 |
![]() | 4.643 | 7.472 | Iowa 9 in Lyon County | MN 91 at the Minnesota state line | 1980 | 2003 | Now County Road L14 (was K64 before 1980) |
![]() | 1.33[4] | 2.14 | Iowa 101 near Urbana | Urbana | 1920 | 1939 | Spur route; became Iowa 363 |
![]() | 274.231 | 441.332 | US 275 / N-92 in Council Bluffs | IL 92 at Muscatine | 1939 | current | Formerly Iowa 2 |
![]() | 29.534 | 47.530 | US 63 near Tripoli | Iowa 150 in Fayette | 1920 | current | |
![]() | 13.12[6] | 21.11 | US 151 in Marion | US 30 in Mount Vernon | 1920 | 1958 | Replaced by relocated Iowa 150 |
![]() | 11.168 | 17.973 | US 151 Business in Cedar Rapids | Palo | 1966 | 2003 | Spur route; now County Road W36 in Linn County and city streets in Cedar Rapids |
![]() | 6 | 9.7 | US 169 near Bouton | Woodward | 1920 | 1932 | Spur route; replaced by an extended Iowa 89 |
![]() | 3.70 | 5.95 | Carbon | Iowa 148 north of Corning | 1932 | 1983 | Spur route; section inside Carbon eliminated 1980; rest redesignated as unsigned Iowa 951 |
![]() | 16.635 | 26.771 | Iowa 14 near Gladbrook | US 63 near Gladbrook | 1920 | current | |
![]() | 1.532 | 2.466 | Russell | US 34 near Russell | 1920 | 2003 | Spur route; much of route now County Road S56 with the last two blocks now Shaw Street |
![]() | 11.10[8] | 17.86 | US 34 near Agency | Selma | 1920 | 1944 | Spur route; replaced by an extended Iowa 16, and Iowa 98 was reassigned to the old route of Iowa 16 |
![]() | 1.814 | 2.919 | Leando | Iowa 16 near Douds | 1920 | 2017 | Spur route; originally began at Iowa 8 (later US 34) east of Agency, but was shortened to Iowa 16 near Douds in 1942 (this section became Iowa 16); now County Road V64 |
![]() | 33 | 53 | US 30 near Camanche | US 61 in Davenport | 1920 | 1931 | Replaced by US 55 (later US 67) |
![]() | 33.232 | 53.482 | US 34 in Burlington | US 61 in Wapello | 1931 | 2003 | Now County Road X99; was County Road 99 until 2005 |
![]() | 44.42[6] | 71.49 | US 275 / Iowa 375 in Council Bluffs | US 71 in Lyman | 1920 | 1958 | Originally a spur route from Iowa 2/Iowa 24 (now US 6) to Griswold, this became part of Iowa 48 in 1923; east-west route designated 1921 when Iowa 24 was decommissioned through Lewis, replaced by relocated Iowa 92 |
![]() | 6.12[16] | 9.85 | US 6 near Lewis | US 71 near Atlantic | 1958 | 1958 | Former section of Iowa 92; renumbered Iowa 414 due to confusion with old Iowa 100 |
![]() | 16.140 | 25.975 | US 30 / US 218 in Cedar Rapids | US 151 / Iowa 13 near Marion | 1984 | current | Former portion of Iowa 150 |
![]() | 15.56 | 25.04 | US 218 in Vinton | Iowa 150 north of Urbana | 1920 | 1984 | Replaced by a relocated Iowa 150 |
![]() | 1.82 | 2.93 | Hawkeye | US 18 near Hawkeye | 1920 | 1980 | Now County Road W14 |
Iowa 102 | 0.501 | 0.806 | New Sharon city limits | US 63 / Iowa 146 in New Sharon | 1980 | current | Unsigned highway; formerly extended to Pella (this is now County Road G5T) |
![]() | 15.649 | 25.185 | US 218 near Donnellson | US 61 / Iowa 2 in Fort Madison | 1920 | 2003 | Now County Road J40 |
![]() | 20 | 32 | No. 8 near Council Bluffs | No. 4 in Macedonia | 1920 | 1926 | First highway to be decommissioned in Iowa; became a county road (now numbered G66) |
![]() | 1.53 | 2.46 | Woodburn | US 34 near Woodburn | 1927 | 1980 | Spur route; now County Road R69; segment in Woodburn maintained as unsigned Iowa 942 until 2003 |
![]() | 34.23[12] | 55.09 | US 69 in Lake Mills | US 218 in St. Ansgar | 1920 | 1992 | Section from US 69 to Winnebago–Worth county line last shows on 1994 map, so was signed until 1994; now County Road 105 |
![]() | 8.98 | 14.45 | Iowa 107 in Clear Lake | US 65 in Mason City | 1920 | 1980 | Now local roads and County Road B35 |
![]() | 27.579 | 44.384 | Iowa 3 near Alexander | CR B35 near Clear Lake | 1920 | 2011 | All but parts in Meservey and Thornton removed in 2003; now County Roads S25, B65 and S14 |
![]() | 1.18 | 1.90 | Delta | Iowa 92 near Delta | 1923 | 1980 | Spur route; now County Road V33 and Iowa 21 |
![]() | 1.268 | 2.041 | Oxford | US 6 near Oxford | 1923 | 2003 | Spur route; now County Road W38 |
![]() | 0.7 | 1.1 | Larrabee | Iowa 73 in Larrabee | 1923 | 1934 | Spur route; decommissioned when Iowa 73 (proposed US 73, now US 59) was relocated to go through Larrabee; now a county road (455th Street) |
![]() | 14.789 | 23.801 | US 20 at Schaller | Iowa 7 at Storm Lake | 1934 | current | |
![]() | 26.72[17] | 43.00 | Kanawha | Woden | 1923 | 1990 | Double spur route with US 18; originally a spur route; now County Road R35 |
![]() | 3 | 4.8 | Iowa 13 | Edgewood | 1923 | 1930 | Spur route; replaced by an extended Iowa 10 (this section now Iowa 3) |
![]() | 5.19 | 8.35 | Volga | Iowa 13 near Osborne | 1931 | 1980 | Spur route; now County Road C24 |
![]() | 34.09[4] | 54.86 | Iowa 10 near Edgewood | US 151 in Monticello | 1924 | 1938 | Replaced by an extended Iowa 38 |
![]() | 1.187 | 1.910 | Iowa 64 near Spragueville | Spragueville | 1938 | 2003 | Spur route; now County Road Z20 |
![]() | 2.22[5] | 3.57 | Route 81 near Farmington | Iowa 2 near Farmington | 1923 | 1968 | Swapped with Iowa 81 |
![]() | 9.20 | 14.81 | Iowa 92 near West Chester | Iowa 22 at Wellman | 1969 | 1981 | Formerly Iowa 81; now County Road W38 |
![]() | 1.34[11] | 2.16 | US 69 | Story City | 1923 | 1969 | Spur route; now County Road E15 |
![]() | 1.237 | 1.991 | US 34 near Stanton | Viking Lake State Park | 1980 | 2003 | Park access road; now County Roads M65 and H43 |
![]() | 1.57[18] | 2.53 | US 20 near Manchester | Manchester Fish Hatchery | 1923 | 1976 | Fish hatchery access road; renumbered Iowa 938 because US 20 was rerouted |
Iowa 116 | 2.776 | 4.468 | Iowa 3 in Waverly | US 218 near Waverly | 1998 | current | Section of US 218 Business in Waverly; signed as US 218 Business instead of Iowa 118 |
![]() | 63 | 101 | US 161 at Anamosa | US 52 / IL 64 at Savanna, Ill. | 1923 | 1936 | Swapped with Iowa 64 |
![]() | 18.562 | 29.873 | Iowa 163 at Prairie City | US 65 / Iowa 330 near Mingo | 1939 | current | Formerly Iowa 64 |
![]() | 4.06[17] | 6.53 | Steamboat Rock | Iowa 175 near Eldora | 1923 | 1989 | Spur route; now County Road S56 and a local road (Market Street) |
![]() | 1.04 | 1.67 | Dorchester | Iowa 76 near Dorchester | 1923 | 1980 | Spur route; now County Road A16 |
![]() | 0.80 | 1.29 | Stanton | US 34 near Stanton | 1924 | 1980 | Spur route; now County Road M63 |
![]() | 0.51[19] | 0.82 | Dolliver Memorial State Park | Iowa 50 near Lehigh | 1924 | 1964 | Park access road; became a county road (now numbered D64) |
![]() | 5.47[16] | 8.80 | Iowa 150 in Davenport | US 61 in Davenport | 1924 | 1960 | Now Pine Street, Cheyenne Avenue, Division Street, Locust Street, and Marquette Street |
![]() | 3.04 | 4.89 | Iowa 3 near Clarksville | Clarksville | 1964 | 1965 | Former section of Iowa 188; became part of Iowa 188 again |
![]() | 12.264 | 19.737 | I-35 / US 18 at Clear Lake | Mason City city limits | 1999 | current | |
![]() | 10.51 | 16.91 | I-35 in Des Moines | Iowa 90 in Des Moines | 1924 | 1959 | Partially replaced by Iowa 60; rest now Fleur Drive |
![]() | 0.45 | 0.72 | US 34 near Rome | Rome | 1969 | 1980 | Spur route; inside Rome stayed in the highway system until 1981 |
![]() | 2.567 | 4.131 | Iowa 4 in Calhoun County | Twin Lakes State Park | 1924 | 2003 | Park access road; now County Roads D26 and N57 |
![]() | 3.26 | 5.25 | Salem | US 218 east of Salem | 1924 | 1981 | Spur route; section inside Salem deleted in 1980; now County Road J20 |
![]() | 1.28 | 2.06 | US 6 near Mitchellville | Mitchellville | 1924 | 1980 | Spur route; now unsigned County Road S27 |
![]() | 15.985 | 25.725 | I-29 near Mondamin | US 30 in Logan | 1924 | current | |
![]() | 6.982 | 11.236 | Iowa 13 near Elkader | US 52 near Garnavillo | 1924 | current | |
![]() | 0.45[11] | 0.72 | US 34 near Rome | Rome | 1924 | 1969 | Spur route; renumbered Iowa 123 when I-129 was designated |
![]() | 12 | 19 | Iowa 9 near Cresco | Minnesota border near Harmony, Minn | 1925 | 1930 | Renumbered Iowa 139 so Iowa 130 could be reused as a spur of US 30 |
![]() | 11 | 18 | Nebraska border | US 30 / US 75 in Missouri Valley | 1930 | 1931 | Formerly Iowa 27; replaced by relocated US 30 |
![]() | 6.65[5] | 10.70 | Maquoketa Caves State Park | US 61 near Maquoketa | 1931 | 1966 | Park access road; became a county road (later numbered Y31); was Iowa 428 from 1980 to 2003 |
![]() | 32.023 | 51.536 | Iowa 38 in Tipton | I-80 / US 61 at Davenport | 1969 | current | Former section of Iowa 150 |
![]() | 2[10] | 3.2 | US 20 near Holstein | US 59 near Holstein | 1925 | 1937 | Section from US 20 to Holstein replaced by realigned US 59; rest given to county because US 59 was realigned |
![]() | 4.520 | 7.274 | Iowa 21 in Belle Plaine | US 30 near Belle Plaine | 1937 | 2003 | Part of the Lincoln Highway; now County Road V40 |
![]() | 5.74[19] | 9.24 | I-35 / I-80 in Des Moines | Iowa 90 (now US 6) in Des Moines | 1925 | 1963 | Now Douglas Avenue |
![]() | 4.23[16] | 6.81 | US 34 / US 218 in Mount Pleasant | Oakland Mills Park (then a state park) | 1925 | 1961 | Park access road; became a county road (now numbered H61) |
![]() | 0.970 | 1.561 | US 30 in Nevada | Nevada | 1964 | 2003 | Spur route; now 6th Street |
![]() | 7 | 11 | US 65 near Hubbard | Iowa 58 | 1925 | 1930 | Replaced by relocated Iowa 58 |
![]() | 8 | 13 | Nebraska state line | US 34 / US 275 in Glenwood | 1930 | 1935 | Replaced by relocated US 34 |
![]() | 4.06 | 6.53 | US 65 near Hampton | Geneva | 1935 | 1980 | Spur route; now County Road C47 |
![]() | 1.75[20] | 2.82 | Beed's Lake State Park | Iowa 3 near Hampton | 1980 | 1987 | Park access road; now County Road S42 |
![]() | 0.75[21] | 1.21 | US 30 near Le Grand | Le Grand | 1926 | 1954 | Spur route; replaced by relocated US 30; Iowa 135 on route shown below |
![]() | 1.96 | 3.15 | Montour | US 30 near Montour | 1954 | 1980 | Spur route; now County Road T47 |
![]() | 87.611 | 140.996 | IL 136 at Clinton | US 20 / US 52 at Dyersville | 1926 | current | |
![]() | 21 | 34 | US 34 at Lucas | US 65 near Indianola | 1926 | 1934 | Formerly No. 65; replaced by realigned US 65 |
![]() | 14.526 | 23.377 | Iowa 5 at Albia | US 63 / Iowa 163 at Eddyville | 1934 | current | Formerly Iowa 59 |
![]() | 3.16[22] | 5.09 | Iowa 2 near Mystic | Mystic | 1926 | 1973 | Formerly No. 69; now County Road T14 |
![]() | 21 | 34 | US 161 in Iowa City | Iowa 38 near Rochester | 1926 | 1929 | Formerly No. 74; replaced by an extended Iowa 1 |
![]() | 11.431 | 18.396 | Iowa 9 near Cresco | MN 139 near Harmony, Minn | 1930 | current | Formerly Iowa 130; continued south to Protivin from 1935 to 1980 |
![]() | 25.309 | 40.731 | US 20 at Moville | Iowa 3 at Remsen | 1926 | current | Formerly No. 30; continued south to Sloan from 1931 to 1961, and to Hornick from 1961 to 1964; section from Kingsley to Remsen deleted in 1965, but restored in 1980 |
![]() | 155.362 | 250.031 | I-29 near Sloan | I-35 / I-80 at Grimes | 1926 | current | |
![]() | 10.50[5] | 16.90 | Route 202 at Coatsville, Mo | Iowa 2 near Moulton | 1926 | 1968 | Former Iowa 71; renumbered Iowa 202 |
![]() | 20.901 | 33.637 | Iowa 2 in Plano | Iowa 5 near Moravia | 1980 | 2003 | Now County Roads S70 and J18 |
![]() | 12.049 | 19.391 | Iowa 3 at Marcus | Iowa 10 at Granville | 1926 | current | |
![]() | 34.039 | 54.780 | Iowa 141 at Perry | Iowa 175 near Harcourt | 1926 | current | |
![]() | 5 | 8.0 | Iowa 5 near Cleghorn | Cleghorn | 1926 | 1931 | Formerly No. 32; became a county road (now numbered L40) |
![]() | 7.408 | 11.922 | I-29 near Thurman | US 275 near Sidney | 1931 | 2003 | Originally a spur route west to Thurman; extended west in 1980; now County Road J24 |
![]() | 42.735 | 68.775 | US 63 / Iowa 102 in New Sharon | US 30 in Le Grand | 1926 | current | |
![]() | 6.706 | 10.792 | Rockford | Iowa 14 in Floyd County | 1926 | 2003 | Spur route, former Iowa 53; now County Road B45 |
![]() | 66.828 | 107.549 | Route 148 near Bedford | I-80 / US 6 near Anita | 1926 | current | |
![]() | 65.897 | 106.051 | US 34 in Ottumwa | I-80 near Williamsburg | 1926 | current | Section from I-80 to US 6 removed 1985 |
![]() | 19 | 31 | US 32 at Homestead | US 30 near Cedar Rapids | 1926 | 1930 | Formerly No. 13; replaced by an extended Iowa 149 |
![]() | 10 | 16 | Schleswig | Iowa 141 near Denison | 1930 | 1930 | Replaced by an extended Iowa 21 |
![]() | 22.96 | 36.95 | US 30 / Iowa 17 in Jefferson | Iowa 64 in Panora | 1931 | 1941 | Replaced by relocated Iowa 17 to avoid conflict with new Iowa 150, which was proposed to become part of US 150 |
![]() | 85.093 | 136.944 | US 218 at Vinton | US 52 / Iowa 24 at Calmar | 1941 | current | |
![]() | 13[10] | 21 | US 71 at Auburn | Iowa 17 near Lake City | 1926 | 1938 | Formerly No. 35; renumbered Iowa 188 when US 151 extended into Iowa |
![]() | 1.31 | 2.11 | US 34 near Murray | Murray | 1926 | 1980 | Formerly No. 8; now County Road R16 |
![]() | 1.402 | 2.256 | I-35 near Osceola | US 69 at Osceola | 1980 | 2014 | Now County Road R35 |
![]() | 7.0 | 11.3 | Iowa 117 in Wyoming | Oxford Junction | 1926 | 1930 | Replaced by an extended Iowa 136 |
![]() | 4.82[6] | 7.76 | US 218 near North Liberty | US 6 near Coralville | 1930 | 1957 | Replaced by rerouted US 218 and local roads |
![]() | 1.02[5] | 1.64 | US 218 near North Liberty | North Liberty | 1957 | 1968 | Former portion of US 218; now Dubuque Street |
![]() | 12.82 | 20.63 | Iowa 150 near Fayette | Iowa 3 in Maryville | 1926 | 1980 | Replaced by Iowa 187 |
![]() | 7.0 | 11.3 | Commerce | Iowa 28 (now 9th Street) in Des Moines | 1927 | 1931 | Spur route; now Walnut Woods Drive, Browns Woods Drive, and McKinley Avenue; parts of the road were destroyed |
![]() | 3.05 | 4.91 | Nodaway | US 34 near Nodaway | 1933 | 1980 | Spur route; now County Road N26, 8th Avenue and 3rd Street |
![]() | 4.748 | 7.641 | Iowa 5 near Marysville | Bussey | 1928 | 2003 | Spur route, section inside Bussey removed 1980; now County Road G71 |
![]() | 0.15 | 0.24 | Monticello | US 161 near Monticello | 1928 | 1931 | Spur route; now Cedar Street; was the shortest state highway at the time |
![]() | 1.032 | 1.661 | US 63 near Lime Springs | Lime Springs | 1931 | 2003 | Spur route; now County Road A21 |
![]() | 0.65[16] | 1.05 | Iowa 60 near Carlisle | Carlisle | 1929 | 1962 | Spur route; now School Street |
![]() | 1.83 | 2.95 | Iowa 92 near Harper | Harper | 1929 | 1980 | Spur route; now County Road V67 |
![]() | 0.82[8] | 1.32 | Wild Cat Den State Park | US 61 | 1930 | 1947 | Renumbered Iowa 389 so Iowa 160 could be reused as a spur of Iowa 60 (this section now Iowa 415) |
![]() | 2.446 | 3.936 | Iowa 415 at Ankeny | I-35 at Ankeny | 1947 | current | extended east from US 69 to I-35 in 1980 |
![]() | 1.15[8] | 1.85 | Iowa 25 in Guthrie County | Springbrook State Park | 1938 | 1944 | Renumbered Iowa 384 so Iowa 161 could be reused as a spur of US 61 |
![]() | 0.47[23] | 0.76 | US 61 in Keokuk | Illinois state line | 1944 | 1951 | Replaced by US 136 |
![]() | 1.224 | 1.970 | Iowa 141 at Dedham | Iowa 141 near Dedham | 1951 | 2003 | Former route of Iowa 141; now County Roads E60 and N33 |
![]() | 2.660 | 4.281 | Pammel State Park | Iowa 92 in Madison County | 1930 | 1982 | Park access road; renumbered Iowa 322 to avoid confusion with nearby US 169 |
Iowa 162 | 2.0 | 3.2 | US 18 in Charles City | US 218 in Charles City | 2000 | 2006 | Former section of US 218; became part of relocated US 18 |
![]() | 1 | 1.6 | Ambrose A. Call State Park | US 169 near Algona | 1930 | 1934 | Park access road; renumbered Iowa 274 when US 163 was designated |
![]() | 166.270 | 267.586 | US 69 in Des Moines | US 34 at Burlington | 1937 | current | |
![]() | 3.79[17] | 6.10 | US 30 in Boone | Ledges State Park | 1930 | 1990 | Park access road; now County Road R27 |
![]() | 4.67[21] | 7.52 | Lewis and Clark State Park | US 75 in Onawa | 1930 | 1955 | Park access road; replaced by an extended Iowa 175 |
![]() | 0.410 | 0.660 | Abbott Drive at Omaha, Neb. | Abbott Drive at Omaha, Neb. | 1956 | current | Only state highway west of the Missouri River |
![]() | 0.57 | 0.92 | Hastings | US 34 near Hastings | 1930 | 1980 | Spur route; now County Road M16 |
![]() | 3.21 | 5.17 | Doon | US 75 near Doon | 1930 | 1980 | Spur route; now Main Street, 3rd Avenue and County Road A44 |
![]() | 2.70 | 4.35 | Iowa 83 near Minden | Shelby | 1930 | 1980 | Spur route; now County Road M16 |
![]() | 3 | 4.8 | Elk Horn | Iowa 7 at Kimballton | 1930 | 1930 | Spur route; renumbered Iowa 173 when US 169 was created in Iowa |
![]() | 1.68[22] | 2.70 | Everly | US 18 near Everly | 1930 | 1974 | Spur route, former portion of US 18; now County Road M27 |
![]() | 1 | 1.6 | Wall Lake State Park (now Big Wall Lake Wildlife Area) | US 75 in Onawa | 1930 | 1935 | Park access road; now an unnumbered county road |
![]() | 1.05 | 1.69 | Elberon | Iowa 21 near Elberon | 1935 | 1980 | Spur route; now Main Street and County Road E44 |
![]() | 4.23 | 6.81 | Elgin | US 18 in Clermont | 1930 | 1980 | Spur route; now County Road W51 and Main, Clermont and Center Streets |
![]() | 14.680 | 23.625 | Iowa 83 near Atlantic | Iowa 44 at Kimballton | 1930 | current | Originally a spur route south to Elk Horn; extended in 1980 |
![]() | 3.61[18] | 5.81 | Farragut | Iowa 2 near Farragut | 1930 | 1976 | Spur route; now County Road M16 |
![]() | 221.367 | 356.256 | N-51 at Decatur, Neb | US 63 near Hudson | 1930 | current | Originally a spur route |
![]() | 1.21[13] | 1.95 | Iowa 92 near Cumberland | Cumberland | 1930 | 1972 | Spur route; now County Road N28 and Jackson, 1st, and Main Streets |
![]() | 1 | 1.6 | Carson | US 59 near Carson | 1930 | 1937 | Spur route; decommissioned when Iowa 100 (now Iowa 92) extended west through Carson |
![]() | 3.20 | 5.15 | Iowa 9 near Osage | Mitchell | 1937 | 1980 | Spur route; now County Road T28 |
![]() | 0.98 | 1.58 | Iowa 9 near Little Rock | Little Rock | 1930 | 1980 | Spur route; now Main Street and Maple Avenue |
![]() | 0.82 | 1.32 | US 69 near Klemme | Klemme | 1930 | 1980 | Spur route; now 168th Street and Main Street |
![]() | 2.46 | 3.96 | Hayesville | Iowa 149 near Hayesville | 1930 | 1980 | Spur route; now County Road G49 |
![]() | 3 | 4.8 | Riverside | US 161 near Riverside | 1930 | 1931 | Spur route; replaced by an extended Iowa 22 |
![]() | 9.596 | 15.443 | Iowa 5 / Iowa 92 near Pleasantville | Melcher-Dallas | 1931 | 2003 | Spur route; now County Road S45 |
![]() | 11.44[5] | 18.41 | Iowa 9 in Lansing | MN 26 at New Albin | 1930 | 1968 | Swapped with Iowa 26 |
![]() | 9.051 | 14.566 | US 18 in Inwood | Iowa 9 near Larchwood | 1969 | current | Formerly Iowa 26 |
![]() | 29.952 | 48.203 | Iowa 127 near Mondamin | Iowa 141 in Ute | 1930 | current | Continued south to US 6 until 1981, and to Council Bluffs city limits until 2003 |
![]() | 26 | 42 | Blockton | US 34 near Creston | 1930 | 1932 | Spur route; replaced by an extended Iowa 25 |
![]() | 15.026 | 24.182 | US 275 near Randolph | US 59 near Randolph | 1934 | 2003 | Originally a spur route from US 275 to Randolph; now County Road J18 |
![]() | 1.51[24] | 2.43 | Iowa 14 near Conrad | Conrad | 1934 | 1978 | Spur route; now County Road D67 |
![]() | 3.27 | 5.26 | US 34 near Prescott | Prescott | 1930 | 1980 | Spur route; now County Road N61 and 6th Avenue |
![]() | 3.375[25] | 5.432 | Green Valley State Park | Iowa 25 in Creston | 1980 | 2001 | Park access road; now unnumbered county roads (Green Valley Road and 130th Street) and Lincoln Street |
![]() | 9 | 14 | Iowa 10 in Alton | Hospers | 1930 | 1931 | Spur route; replaced by Iowa 33 |
![]() | 28.385 | 45.681 | US 20 near Masonville | Iowa 150 near Fayette | 1931 | current | Originally was a park access road to Backbone State Park; moved to current route in 1980 |
![]() | 26[10] | 42 | US 52 / Iowa 10 at Luxemburg | US 161 at Cascade | 1930 | 1938 | Replaced by an extended Iowa 136 |
![]() | 13 | 21 | US 71 at Auburn | Iowa 17 near Lake City | 1938 | 1940 | Formerly No. 35 and Iowa 151; replaced by an extended Iowa 175 |
![]() | 24.231 | 38.996 | Iowa 3 near Clarksville | US 63 near Tripoli | 1945 | current | |
![]() | 1.00 | 1.61 | Bridgewater | Iowa 92 north or Bridgwater | 1930 | 1980 | Spur route; now County Road N51 |
![]() | 10 | 16 | Ashton | Iowa 9 in Sibley | 1930 | 1931 | Spur route; replaced by Iowa 33 |
![]() | 7.46 | 12.01 | Fairbank | Iowa 150 near Oelwein | 1931 | 1980 | Replaced by Iowa 281 |
![]() | 22.790 | 36.677 | I-680 near Neola | Iowa 37 at Earling | 1930 | current | continued south to US 6 until 1981, and to Council Bluffs city limits until 2003 |
![]() | 10 | 16 | US 75 in Sloan | Iowa 141 near Hornick | 1930 | 1931 | Became part of an extended Iowa 140 |
![]() | 5.090 | 8.192 | I-29 / I-80 at Council Bluffs | I-29 at Council Bluffs | 1931 | 2017 | Renumbered from Iowa 241; was decommissioned in 1975, but restored in 1980; truncated in 2016; now city streets |
![]() | 10.852 | 17.465 | US 18 in Fayette County | Iowa 24 in Jackson Junction | 1930 | 2003 | Now County Road V68 |
![]() | 0.86[6] | 1.38 | Iowa 2 in Clarinda | Clarinda Treatment Center | 1930 | 1958 | Hospital access road; now 16th Street |
![]() | 3[10] | 4.8 | US 69 in Jewell | Ellsworth | 1930 | 1935 | Spur route; became part of an extended Iowa 175 |
![]() | 2.896 | 4.661 | Iowa 4 near Plover | Plover | 1935 | 2003 | Spur route; now County Road C15 |
![]() | 1 | 1.6 | US 20 near Williams | Williams | 1930 | 1932 | Was proposed to replace part of US 20, which was to be shifted south, but the plan to relocate US 20 was abandoned in 1932; portion now County Road D25 |
![]() | 10.136 | 16.312 | US 71 / Iowa 175 near Lake View | US 20 near Sac City | 1935 | 2015 | Replaced by a rerouted US 71 |
![]() | 7[10] | 11 | Stratford | Iowa 60 near Stanhope | 1930 | 1937 | Spur route; became part of an extended Iowa 175 |
![]() | 2.567 | 4.131 | Iowa 3 near Albert City | Albert City | 1937 | 2003 | Spur route; now Main Street and County Road N14 |
![]() | 2.231 | 3.590 | Garrison | US 218 near Garrison | 1930 | 2003 | Spur route, section in Garrison removed 1980; now County Road V66 |
![]() | 2.666 | 4.291 | Van Horne | US 218 near Van Horne | 1930 | 2003 | Spur route, section in Van Horne removed 1980; now County Road E44 |
![]() | 2.163 | 3.481 | US 30 near Keystone | Keystone | 1930 | 2003 | Spur route, section in Keystone removed 1980; now County Road V42 |
![]() | 4.755 | 7.652 | Norway | US 30 / US 218 near Atkins | 1930 | 2003 | Spur route; now County Road W24 |
![]() | 8.13[5] | 13.08 | US 218 | Shellsburg | 1930 | 1967 | Spur route; became a county road (now numbered E36) |
![]() | 10.461 | 16.835 | Route 202 at Coatsville, Mo | Iowa 2 near Moulton | 1969 | current | Formerly Iowa 142 |
![]() | 8.78 | 14.13 | Terril | Iowa 9 | 1930 | 1980 | Spur route; original east-west spur now County Road A34, north-south spur now County Road N14, Main and State streets |
![]() | 5.407 | 8.702 | Iowa 2 near Garden Grove | Garden Grove | 1930 | 2003 | Spur route; now County Roads R20 and J69 |
![]() | 2.927 | 4.711 | US 65 near Milo | Milo | 1930 | 2003 | Spur route; now County Road G58 |
![]() | 6.221 | 10.012 | US 65 near Liberty Center | Liberty Center | 1930 | 2003 | Spur route; now County Road G76 |
![]() | 3.058 | 4.921 | I-35 near New Virginia | New Virginia | 1930 | 2003 | Spur route; now County Road G76 |
![]() | 14 | 23 | US 20 | Backbone State Park | 1930 | 1931 | Park access road; renumbered Iowa 187 |
![]() | 11.83[22] | 19.04 | Iowa 2 | Blanchard | 1931 | 1974 | Spur route; now County Road M48 |
![]() | 0.66[18] | 1.06 | Iowa 149 near Conroy | Conroy | 1931 | 1976 | Spur route; now County Road F34 |
![]() | 34.781 | 55.975 | Iowa 141 near Woodward | US 65 near Collins | 1931 | current | Originally a double spur route from Slater to Maxwell; extended in 1980 |
![]() | 1.63 | 2.62 | Cambridge | Iowa 210 near Cambridge | 1931 | 1980 | Spur route; now County Road R70 |
![]() | 20 | 32 | Iowa 8 in Dysart | US 30 in Belle Plaine | 1931 | 1933 | Replaced by an extended Iowa 73, which was renumbered Iowa 212 9 months later; this portion became part of Iowa 21 a month later |
![]() | 12.157 | 19.565 | Iowa 21 near Belle Plaine | US 6 at Marengo | 1934 | current | continued northwest to US 30 from 1937 to 1980 |
![]() | 3.72 | 5.99 | Blakesburg | US 34 north of Blakesburg | 1931 | 1980 | Spur route; now County Road T61 |
![]() | 5.736 | 9.231 | Iowa 175 near Ivester | Wellsburg | 1931 | 2003 | Spur route; now County Road T19 |
![]() | 8.738 | 14.062 | Union | Iowa 175 in Eldora | 1931 | 2003 | Spur route; now County Road S62 |
![]() | 1.70[15] | 2.74 | Iowa 5 | Exline | 1931 | 1981 | Spur route; now County Road T16 |
![]() | 4.96[17] | 7.98 | Breda | US 71 | 1931 | 1989 | Spur route; now County Road E16 |
![]() | 1.53 | 2.46 | Iowa 9 near Lake Park | Lake Park | 1931 | 1980 | Spur route; now County Road M27 |
![]() | 7.233 | 11.640 | US 6 at South Amana | US 151 at Amana | 1931 | current | Continued east to East Amana and south to Upper South Amana until 1980 |
![]() | 11[10] | 18 | US 71 near Albert City | Albert City | 1931 | 1937 | Spur route; became a county road (now numbered C29) |
![]() | 42.61[8] | 68.57 | Iowa 5 near Cherokee | Iowa 17 / Iowa 10 at Pocahontas | 1937 | 1945 | Extended in both directions and renumbered Iowa 3 |
![]() | 3.909 | 6.291 | I-35 near Story City | Roland | 1947 | 2003 | Spur route, section from I-35 to US 69 removed 1980; now County Road E18 |
![]() | 15.12 | 24.33 | Iowa 15 near Ottosen | Livermore | 1931 | 1980 | Spur route; now County Road C20 |
![]() | 12.22[9] | 19.67 | Iowa 330 near Baxter | Iowa 14 near Baxter | 1931 | 1997 | Originally a spur route, extended west from Baxter in 1980; now County Road F17 |
![]() | 10.587 | 17.038 | US 6 near Kellogg | Iowa 14 near Laurel | 1931 | current | Originally a spur route; extended north from Kellogg in 1980 |
![]() | 7.688 | 12.373 | Sully | Iowa 146 in Searsboro | 1931 | 2003 | Spur route; now County Road F62 |
![]() | 10.78 | 17.35 | US 18 | Titonka | 1931 | 1980 | Spur route; now County Road P64 |
![]() | 5.39[26] | 8.67 | US 218 near Stacyville | Stacyville | 1931 | 1991 | Spur route; now County Road T40 |
![]() | 0.85[19] | 1.37 | US 6 (this section became County Road F58 in 2003) near Walcott | Walcott | 1931 | 1964 | Spur route; now Main Street |
![]() | 5.233 | 8.422 | Garwin | US 63 in Tama County | 1931 | 2003 | Spur route; now County Road E29 |
![]() | 1[10] | 1.6 | Sergeant Bluff | US 75 near Sergeant Bluff | 1931 | 1934 | Spur route; decommissioned because US 75 was rerouted through Sergeant Bluff, and Iowa 230 was reassigned to the old route of US 75; part later restored as Iowa 378 in 1942 |
![]() | 8.60[19] | 13.84 | US 75 near Sergeant Bluff | US 75 in Sioux City | 1934 | 1965 | Spur route; now Transit Avenue, Morningside Avenue, Lakeport Road and a county road (now numbered K29) |
![]() | 1.83[15] | 2.95 | Iowa 10 near Ireton | Ireton | 1931 | 1981 | Spur route; now County Road K30 and 4th Street |
Iowa 231 | 4.068 | 6.547 | US 34 west of New London | US 34 east of New London | 2000 | 2003 | Former section of US 34, unsigned; now Main Street |
![]() | 1.99 | 3.20 | Earlham | I-80 near Earlham | 1931 | 1980 | Spur route; now County Road P57 |
![]() | 5.30[17] | 8.53 | Albion | Iowa 14 near Rhodes | 1931 | 1989 | Spur route; became part of relocated Iowa 330 |
![]() | 6.72[17] | 10.81 | US 30 in State Center | Iowa 330 near Rhodes | 1931 | 1994 | Originally a spur route; only the section north of CR E63 remained after 1989; now an unnumbered county road |
![]() | 3 | 4.8 | Iowa 234 near Rhodes | Rhodes | 1931 | 1935 | Spur route; became an unnumbered county road (now 285th Street) |
![]() | 1.24[5] | 2.00 | Rhodes | Iowa 234 near Rhodes | 1935 | 1966 | Spur route; renumbered Iowa 245 when I-235 was designated |
![]() | 1.18[20] | 1.90 | Templeton | US 71 / Iowa 141 near Templeton | 1931 | 1987 | Spur route; now local roads (Main and 2nd Streets) and County Road N18 |
![]() | 1.41 | 2.27 | Iowa 9 near Ocheyedan | Ocheyedan | 1931 | 1981 | Spur route; section in Ocheyedan removed in 1980; now County Road L58 |
![]() | 1.063 | 1.711 | Iowa 9 near Harris | Harris | 1931 | 2003 | Spur route; was decommissioned in 1981, but was restored in 1987; now County Road M20 |
![]() | 0.510 | 0.821 | Waubonsie State Park | Iowa 2 in Fremont County | 1931 | 2003 | Park access road; now County Road L48 |
![]() | 6.389 | 10.282 | Royal | US 71 in Clay County | 1931 | 2003 | Spur route; now Main Street, County Roads M36 and B40 |
![]() | 5 | 8.0 | US 34 / US 275 at Council Bluffs | US 34 / US 275 | 1931 | 1931 | Renumbered Iowa 192 |
![]() | 0.99 | 1.59 | Readlyn | Iowa 3 near Readlyn | 1931 | 1980 | Spur route; now local roads |
![]() | 5.855 | 9.423 | US 34 in Mills County | Silver City | 1931 | 2003 | Spur route; now County Road L55 |
![]() | 7.97 | 12.83 | Iowa 140 near Kingsley | Pierson | 1931 | 1980 | Spur route; now County Road D12 |
![]() | 0.559 | 0.900 | Black Hawk Lake State Park | US 71 / Iowa 175 near Wall Lake | 1980 | 2003 | Park access road; now an unnumbered county road |
![]() | 1.96 | 3.15 | Henderson | US 59 | 1931 | 1980 | Spur route; now County Roads H12 and M21 and Maple Street |
![]() | 0.771 | 1.241 | I-80 near Neola | Iowa 191 in Neola | 1980 | 2003 | Now County Road L55 |
![]() | 1.54[16] | 2.48 | Iowa 9 near Estherville | Fort Defiance State Park | 1931 | 1961 | Park access road; became a county road (now numbered N26) |
![]() | 1.24[17] | 2.00 | Rhodes | Iowa 234 near Rhodes | 1966 | 1990 | Spur route; portion outside of Rhodes removed in 1989; now County Road E63 |
![]() | 3.26 | 5.25 | US 61 in Zwingle | La Motte | 1931 | 1981 | Spur route; section outside La Motte deleted in 1980; now County Road D55 and city streets |
![]() | 0.68[19] | 1.09 | Chelsea | Iowa 212 near Chelsea | 1931 | 1963 | Spur route; became a county road (now numbered V18) |
![]() | 0.54 | 0.87 | Independence State Hospital | US 20 in Independence | 1931 | 1980 | Hospital access road; now 20th Avenue SW |
![]() | 0.665 | 1.070 | Iowa 78 near Winfield | Winfield | 1931 | 2003 | Spur route; now County Road V66 |
![]() | 0.59 | 0.95 | Lakota | US 169 / Iowa 9 near Lakota | 1932 | 1980 | Spur route; now a local road |
![]() | 1.71 | 2.75 | St. Charles | I-35 near St. Charles | 1932 | 1980 | Spur route; now County Road G50 |
![]() | 0.584 | 0.940 | US 61 / Iowa 92 near Grandview | Grandview | 1932 | 2003 | Spur route |
![]() | 0.932 | 1.500 | Iowa 14 near Williamson | Williamson | 1932 | 2003 | Spur route |
![]() | 0.45[5] | 0.72 | Iowa 92 at Massena | Massena | 1932 | 1968 | Spur route; renumbered Iowa 322 |
![]() | 7.91 | 12.73 | Iowa 9 near Buffalo Center | MN 254 near Rake | 1969 | 1980 | Spur route; formerly Iowa 322 |
Iowa 254 | 2.7 | 4.3 | dead end northwest of Nashua | dead end southeast of Nashua | 2003 | 2004 | Former section of US 218 |
![]() | 2.26 | 3.64 | Orchard | US 218 near Orchard | 1932 | 1980 | Spur route |
![]() | 0.80 | 1.29 | Iowa 17 near Corwith | Corwith | 1932 | 1980 | Spur route |
![]() | 0.58[16] | 0.93 | US 18 near Dickens | Dickens | 1933 | 1960 | Spur route |
![]() | 1.989 | 3.201 | I-35 near Van Wert | US 69 near Van Wert | 1933 | 2003 | Originally a spur route |
![]() | 1.001 | 1.611 | US 169 near Tingley | Tingley | 1933 | 2003 | Spur route; section in Tingley removed 1980 |
![]() | 2.12[24] | 3.41 | Shannon City | US 169 near Shannon City | 1933 | 1977 | Spur route |
![]() | 33.02[16] | 53.14 | Iowa 1 in Iowa City | US 151 | 1930 | 1962 | Numbered as a branch of US 161; replaced by relocated Iowa 1 |
![]() | 1.99 | 3.20 | US 69 near Galt | Galt | 1933 | 1980 | Spur route |
![]() | 2.14 | 3.44 | Coulter | Latimer | 1933 | 1980 | Double spur route with Iowa 3 |
Iowa 263 | 12.511 | 20.135 | Iowa 14 in Grundy County | US 20 near Cedar Falls | 2000 | 2003 | Former section of US 20 |
![]() | 2.39 | 3.85 | Linn Grove | Iowa 10 near Linn Grove | 1933 |