Iowa Primary Highway System
Highways that changed jurisdiction around 1980
  Removed highways
  Renumbered highways
  Added highways
System information
NotesPrimary highways in Iowa are generally state-maintained.
Highway names
InterstatesInterstate X (I-X)
US HighwaysU.S. Highway X (US X)
StateHighway X (IA X or Iowa X)
System links

Beginning in 1979 and lasting through the early 1980s, a series of agreements between the Iowa Department of Transportation and individual county boards of supervisors led to a mass transfer of jurisdiction of several state highways in Iowa. County boards of supervisors were asked to convene functional classification boards in order to review the classification all of the highway miles within each respective county. Control of roads that were classified as trunk roads or trunk collector roads were transferred to the counties, while roads classified as arteries or arterial collectors were transferred to the state department of transportation. The vast majority of transfers took place in 1980.

Background

The 67th Iowa General Assembly passed a bill in 1978 that changed how the state department of transportation (DOT) classified highways and how they were funded throughout the state. The bill enacted an existing framework for county boards of supervisors to create reclassification boards that could appeal to a state board if certain changes to the road network were not satisfactory. The state's road use tax fund, which is the mechanism for allocating funds to the different levels of government for different levels of road, had both its inputs and outputs modified. The general fuel tax was raised from 7 to 8+12 cents per US gallon (1.8 to 2.2 ¢/L) for 1978 (equivalent to 31 to 38 cents per US gallon (8.2 to 10.0 ¢/L) in 2022), and to 10 ¢/US gal (2.6 ¢/L) for 1979 (equivalent to 40 ¢/US gal (11 ¢/L) in 2022).[1][2]

The state was attempting to offset the effects the 1970s energy crisis and the 1973–75 recession which strained state budgets by reducing income due to reduced demand for gasoline and increasing inflation.[3] The idea was for the DOT to save operational money by offloading minor highways to the respective counties. In 1979, Iowa had the 9th largest public road system in the United States with over 113,000 miles (182,000 km) of roadways, 10,000 miles (16,000 km) of which were primary highways, comprising Interstate Highways, U.S. Highways, and state highways. State planners sought to offload nearly one-third of the primary system. Naturally, county officials, whose road budgets were similarly strained, balked at the idea.[4]

The Iowa Code provided a manner for determining the class of a particular highway. Each county was to appoint a three-member board, one of whom was to be a state DOT employee, one a county engineer or supervisor, and the other a municipal leader chosen by a majority of mayors in the county. The board was to classify each mile of roads and streets in the county into one of twelve categories. Only three categories applied to primary highways–freeways and expressways, arterials, and arterial connectors. The freeway-expressway and arterial systems had limits on total mileage, 2,660 and 3,500 miles (4,280 and 5,630 km), respectively. The only other requirement of the reclassification boards was to ensure network continuity between counties.[5] Ultimately, these boards found about 1,000 miles (1,600 km) of minor highways that were on the primary system and 400 miles (640 km) of major highways on the secondary system.[4]

County officials were not keen on the idea of taking over more highway miles from the state when their own road budgets were tight. Clarke County officials sued the state classification board when it suggested the county take over an 11-mile (18 km) portion of U.S. Highway 69 (US 69). They felt the DOT was attempting to dump unwanted highway miles, which were also in poor condition, on a county unwilling to accept them.[3] Some counties felt pressure to accept roads from the state that the DOT had not maintained adequately.[6] Grundy County had some success by reclassifying some roads slated for transfer, such as Iowa Highway 214 (Iowa 214) into Wellsburg. That highway was reclassified as an arterial collector extension, keeping in spirit with an agreement it had with the DOT to maintain the highway until "Interstate 520" was built.[7] Other counties had appeals heard at the DOT headquarters in Ames.[8]

Construction of new highways, such as Interstate 380 (I-380) would cause a chain reaction in other state highways. It was predicted in 1979 that opening I-380 in the Cedar Rapids area would cause Iowa 150 to lose its status as a primary highway because the route ran roughly parallel to the planned Interstate Highway's corridor.[9] Indeed, when I-380 opened to traffic in 1984, Iowa 150 was rerouted away from Cedar Rapids over Iowa 101 to Vinton. One section of Iowa 150 along Collins Road in Cedar Rapids was still classified as an arterial connector; it became Iowa 100.

One provision in the Iowa Code required whichever agency maintained a section of highway previously to either repair the highway in question or to pay an appropriate amount of money equal to the costs of repairing the road to the agency receiving the road.[10] In Johnson County, state and county officials had difficulty reaching an agreement on a former segment of Iowa 1, by then renumbered Iowa 979. County officials wanted the state to take over County Road W66 (CR W66) from I-80 to the west overlook of Coralville Lake. The state countered with an offer to pay to upgrade Iowa 979 as well as have the county take over three other highways in the county.[11] The two sides were not any closer 18 months later when the DOT was ready to open a new four-lane US 218 south of Iowa City.[12] The routes for which no agreement could be made were ultimately kept by the DOT and assigned new route numbers, as was the case with Iowa 979.

Routes removed

Lengths represent the distances removed from the state highway system

Number Length (mi)[13] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
Iowa 27 6.8611.04 AlvordUS 75 near Rock Rapids 01930-01-01193001980-01-011980
Iowa 42 4.186.73 US 275 / Iowa 2 near SidneyRiverton 01920-01-01192001980-01-011980
Iowa 43 1.582.54 RingstedIowa 15 near Ringsted 01920-01-01192001980-01-011980
Iowa 47 0.821.32 Iowa 14 near AllisonAllison 01951-01-01195101980-01-011980
Iowa 54 2.994.81 Marble RockIowa 14 east of Marble Rock 01920-01-01192001980-01-011980
Iowa 77 7.8012.55 Iowa 78 at RichlandIowa 92 at Keota 01920-01-01192002003-01-012003 Segment into Keota remained
Iowa 79 1.742.80 Iowa 2 near BonaparteBonaparte 01920-01-01192001980-01-011980
Iowa 84 2.133.43 The Eastern Iowa AirportI-380 near Cedar Rapids 01943-01-01194301980-01-011980
Iowa 86 0.470.76 FertileIowa 9 at Fertile 01945-01-01194501980-01-011980
Iowa 87 4.066.53 US 69 west of ElkhartElkhart 01920-01-01192001983-01-011983
Iowa 88 8.0112.89 US 61 / Iowa 2 in Fort MadisonIowa 16 in Denmark 01940-01-01194001980-01-011980
Iowa 89 7.6912.38 Iowa 141 near WoodwardIowa 17 in Madrid 01946-01-01194601980-01-011980 Replaced by an extended Iowa 210
Iowa 90 16.3226.26 I-80 in Dallas CountyI-35 in Des Moines 01932-01-01193201981-01-011981
Iowa 91 4.186.73 LedyardUS 169 near Ledyard 01940-01-01194001980-05-011980
Iowa 95 3.705.95 CarbonIowa 148 north of Corning 01932-01-01193201983-01-011983
Iowa 101 15.5625.04 US 218 in VintonIowa 150 north of Urbana 01920-01-01192001984-01-011984 Replaced by a relocated Iowa 150
Iowa 102 1.822.93 HawkeyeUS 18 near Hawkeye 01920-01-01192001980-01-011980
Iowa 104 1.532.46 WoodburnUS 34 near Woodburn 01927-01-01192701980-01-011980
Iowa 106 8.9814.45 Iowa 107 in Clear LakeUS 65 in Mason City 01920-01-01192001980-01-011980  
Iowa 108 1.181.90 DeltaIowa 92 near Delta 01923-01-01192301980-01-011980
Iowa 112 5.198.35 VolgaIowa 13 near Osborne 01931-01-01193101980-01-011980
Iowa 114 9.2014.81 Iowa 92 near West ChesterIowa 22 at Wellman 01969-01-01196901981-01-011981 Previously Iowa 81
Iowa 119 1.041.67 DorchesterIowa 76 near Dorchester 01923-01-01192301980-01-011980
Iowa 120 0.801.29 StantonUS 34 near Stanton 01924-01-01192401980-01-011980
Iowa 123 0.450.72 US 34 near RomeRome 01970-01-01197001980-01-011980
Iowa 125 3.265.25 SalemUS 218 near Salem 01924-01-01192401981-01-011981
Iowa 126 0.971.56 US 6 near MitchellvilleMitchellville 01924-01-01192401980-01-011980
Iowa 134 4.066.53 US 65 near HamptonGeneva 01935-01-01193501980-01-011980
Iowa 135 1.963.15 MontourUS 30 near Montour 01954-01-01195401980-01-011980
Iowa 152 1.312.11 US 34 near MurrayMurray 01926-01-01192601980-01-011980
Iowa 155 3.054.91 NodawayUS 34 near Nodaway 01933-01-01193301980-01-011980
Iowa 156 0.330.53 Bussey city limitsBussey 02003-01-012003 Turned over within city limits
Iowa 159 1.832.95 Iowa 92 near HarperHarper 01929-01-01192901980-01-011980
Iowa 166 0.570.92 HastingsUS 34 near Hastings 01930-01-01193001980-01-011980
Iowa 167 3.215.17 DoonUS 75 near Doon 01930-01-01193001980-01-011980
Iowa 168 2.704.35 Iowa 83 near MindenShelby 01930-01-01193001980-01-011980
Iowa 171 1.051.69 ElberonIowa 21 near Elberon 01935-01-01193501980-01-011980
Iowa 172 4.236.81 ElginUS 18 in Clermont 01930-01-01193001980-01-011980
Iowa 177 3.205.15 Iowa 9 near OsageElgin 01937-01-01193701980-01-011980
Iowa 178 0.981.58 Iowa 9 near Little RockLittle Rock 01930-01-01193001980-01-011980
Iowa 179 0.761.22 US 69 near KlemmeKlemme 01930-01-01193001980-01-011980
Iowa 180 2.463.96 HayesvilleIowa 149 near Hayesville 01930-01-01193001980-01-011980
Iowa 186 3.275.26 US 34 near PrescottPrescott 01930-01-01193001980-01-011980
Iowa 189 1.001.61 BridgewaterIowa 92 north or Bridgwater 01930-01-01193001980-01-011980
Iowa 190 7.4612.01 FairbankIowa 150 near Oelwein 01931-01-01193101980-01-011980 Replaced by Iowa 281
Iowa 198 0.430.69 GarrisonGarrison city limits 02003-01-012003 Turned over within city limits
Iowa 199 0.540.87 Van Horne city limitsVan Horne 02003-01-012003 Turned over within city limits
Iowa 200 0.590.95 Keystone city limitsKeystone 02003-01-012003 Turned over within city limits
Iowa 203 8.7814.13 TerrilIowa 9 near Superior 01920-01-01192001980-01-011980
Iowa 213 3.725.99 BlakesburgUS 34 north or Blakesburg 01931-01-01193101980-01-011980
Iowa 216 1.702.74 Iowa 5Exline 01931-01-01193101981-01-011981
Iowa 219 1.532.46 Iowa 9 near Lake ParkLake Park 01931-01-01193101980-01-011980
Iowa 221 2.443.93 US 69 near Story CityI-35 near Story City 02003-01-012003 Segment from I-35 to Roland remained
Iowa 222 14.7223.69 Iowa 15 near OttosenLivermore 01931-01-01193101980-01-011980
Iowa 226 10.7817.35 US 18 near WesleyTitonka 01931-01-01193101980-01-011980
Iowa 231 1.832.95 Iowa 10 near IretonIreton 01931-01-01193101981-01-011981
Iowa 232 1.993.20 EarlhamI-80 near Earlham 01931-01-01193101980-01-011980
Iowa 237 1.231.98 OcheyedanIowa 9 near Ocheyedan 01931-01-01193101981-01-011981
Iowa 241 0.991.59 ReadlynIowa 3 near Readlyn 01931-01-01193101980-01-011980
Iowa 243 7.9712.83 Iowa 140 near KingsleyPierson 01931-01-01193101980-01-011980
Iowa 244 1.963.15 HendersonUS 59 01931-01-01193101980-01-011980
Iowa 246 3.265.25 US 61 in ZwingleLa Motte 01931-01-01193101980-01-011980
Iowa 248 0.490.79 Independence State HospitalUS 20 in Independence 01931-01-01193101980-01-011980
Iowa 250 0.590.95 LakotaUS 169 / Iowa 9 near Lakota 01932-01-01193201980-01-011980
Iowa 251 1.712.75 St. CharlesI-35 near St. Charles 01932-01-01193201980-01-011980
Iowa 254 7.9112.73 Iowa 9 near Buffalo CenterMN 254 near Rake 01969-01-01196901980-01-011980
Iowa 255 2.263.64 OrchardUS 218 near Orchard 01932-01-01193201980-01-011980
Iowa 256 0.801.29 Iowa 17 near CorwithCorwith 01932-01-01193201980-01-011980
Iowa 259 0.450.72 Tingley city limitsTingley 02003-01-012003 Turned over within city limits
Iowa 262 1.993.20 US 69 near GaltGalt 01933-01-01193301980-01-011980
Iowa 263 2.023.25 CoulterLatimer 01933-01-01193301980-01-011980 Double spur route with Iowa 3
Iowa 264 2.393.85 Linn GroveIowa 10 near Linn Grove 01933-01-01193301980-01-011980
Iowa 266 0.120.19 Weldon city limitsWeldon 02003-01-012003 Turned over within city limits
Iowa 267 1.191.92 Iowa 93 near RandaliaRandalia 01934-01-01193401980-01-011980
Iowa 269 3.014.84 Iowa 16 near StockportStockport 01934-01-01193401980-01-011980
Iowa 270 1.802.90 Iowa 16 near HillsboroHillsboro 01934-01-01193401980-01-011980
Iowa 271 0.841.35 Iowa 4 near YaleYale 01935-01-01193501980-01-011980
Iowa 277 6.2410.04 NumaIowa 5 near Centerville 01935-01-01193501980-01-011980
Iowa 278 2.053.30 RathbunIowa 5 near Rathbun 01935-01-01193501980-01-011980
Iowa 279 0.721.16 Atkins city limitsAtkins 02003-01-012003 Turned over within city limits
Iowa 284 5.588.98 AuroraIowa 187 at Lamont 01935-01-01193501980-01-011980
Iowa 287 0.420.68 Newhall city limitsNewhall 02003-01-012003 Turned over within city limits
Iowa 288 4.587.37 US 65 near ManlyPlymouth 01935-01-01193501980-01-011980
Iowa 289 6.149.88 Alta VistaUS 63 near Lourdes 01935-01-01193501980-01-011980
Iowa 290 1.993.20 FarmersburgIowa 13 near Farmersburg 01935-01-01193501980-01-011980
Iowa 291 1.011.63 Low MoorUS 30 near Low Moor 01935-01-01193501979-01-011979
Iowa 292 3.175.10 LindenIowa 44 01935-01-01193501980-01-011980
Iowa 293 1.422.29 Iowa 90 near Van MeterVan Meter 01935-01-01193501980-01-011980
Iowa 295 5.098.19 WestgateIowa 150 near Maynard 01935-01-01193501980-01-011980
Iowa 296 4.447.15 CR C24 near WadenaIowa 56 near Wadena 01935-01-01193501980-01-011980
Iowa 302 3.004.83 ThorIowa 3 near Thor 01935-01-01193501980-01-011980
Iowa 303 3.515.65 US 34 near FairfieldLibertyville 01935-01-01193501981-01-011981
Iowa 304 1.592.56 Iowa 78 near OllieOllie 01935-01-01193501980-01-011980
Iowa 309 2.323.73 BeaconIowa 137 in Oskaloosa 01935-01-01193501980-01-011980
Iowa 311 0.550.89 LiscombLiscomb city limits 01935-01-01193501989-01-011989 Turned over within city limits
Iowa 312 5.709.17 Iowa 9 near RicevilleMcIntire 01935-01-01193501980-01-011980
Iowa 313 2.033.27 Melvin city limitsMelvin 01935-01-01193502002-01-012002
Iowa 317 0.811.30 US 65 near ZearingZearing 01935-01-01193501980-01-011980
Iowa 318 5.518.87 ClutierIowa 21 near Clutier 01935-01-01193501980-01-011980
Iowa 319 0.500.80 GravityIowa 148 at Gravity 01935-01-01193501980-01-011980
Iowa 323 3.746.02 Iowa 17 near WoolstockWoolstock 01935-01-01193501980-01-011980
Iowa 325 0.470.76 SpillvilleSpillville city limits 01935-01-01193502003-01-012003 Turned over within city limits
Iowa 326 2.183.51 BristowIowa 3 near Bristow 01935-01-01193501981-01-011981
Iowa 328 2.293.69 US 20 near GalvaGalva 01935-01-01193501980-01-011980
Iowa 329 4.857.81 US 169 at BoxholmPilot Mound 01935-01-01193501980-01-011980
Iowa 332 1.001.61 Pilot Knob State ParkIowa 9 near Forest City 01935-01-01193501980-01-011980 Park access road
Iowa 334 1.873.01 US 63 near FrederikaFrederika 01935-01-01193501980-01-011980
Iowa 335 0.641.03 Iowa 141 near DawsonDawson 01935-01-01193501980-01-011980
Iowa 336 2.483.99 Iowa 150 near RowleyRowley 01936-01-01193601980-01-011980
Iowa 337 3.365.41 Iowa 9 near GraftonGrafton 01936-01-01193601980-01-011980
Iowa 342 0.951.53 Iowa 141 near JamaicaJamaica 01936-01-01193601980-01-011980
Iowa 343 1.011.63 Iowa 333 near NorthboroNorthboro 01937-01-01193701980-01-011980
Iowa 351 0.861.38 RembrandtUS 71 near Rembrandt 01938-01-01193801981-01-011981
Iowa 352 0.751.21 US 71 near TruesdaleTruesdale 01938-01-01193801981-01-011981
Iowa 353 0.350.56 RowanIowa 3 at Rowan 01938-01-01193801980-01-011980
Iowa 356 6.3710.25 PackwoodIowa 1 near Packwood 01938-01-01193801981-01-011981
Iowa 358 1.552.49 WhittemoreUS 18 / Iowa 15 near Whittemore 01938-01-01193801980-01-011980
Iowa 362 1.171.88 MacedoniaUS 59 near Macedonia 01938-01-01193801980-01-011980
Iowa 364 0.741.19 Cota CreekHarpers Ferry 01938-01-01193802003-01-012003 Turned over within city limits
Iowa 365 1.071.72 TracyIowa 92 near Tracy 01939-01-01193901980-01-011980
Iowa 367 3.395.46 RutlandUS 169 near Humboldt 01942-01-01194201980-01-011980
Iowa 369 5.548.92 Iowa 2 near MoultonUnionville 01942-01-01194201980-01-011980
Iowa 374 7.9912.86 US 71 near Sioux RapidsWebb 01942-01-01194201980-01-011980
Iowa 377 0.510.82 Harbor Drive in Sioux CityIowa 970 in Sergeant Bluff 01942-01-01194201980-01-011980 Airport access road
Iowa 379 4.597.39 JoiceIowa 105 near Lake Mills 01942-01-01194201980-01-011980
Iowa 381 0.671.08 Iowa 254 near RakeRake 01954-01-01195401980-01-011980
Iowa 387 0.520.84 Davenport Municipal AirportUS 61 3 miles north of Davenport 01951-01-01195101979-01-011979
Iowa 388 0.350.56 CalumetUS 59 at Calumet 01946-01-01194601980-01-011980
Iowa 390 0.741.19 Iowa 10 near MarathonMarathon 01946-01-01194601980-01-011980
Iowa 393 2.403.86 IoniaUS 18 near Ionia 01948-01-01194801980-01-011980
Iowa 394 1.722.77 Iowa 2 near DenmarkIowa Army Ammunition Plant southern entrance 01948-01-01194801980-01-011980
Iowa 395 0.530.85 MelbourneIowa 330 near Melbourne 01948-01-01194801983-01-011983
Iowa 396 0.520.84 Iowa 175 near FarnhamvilleFarnhamville 01954-01-01195401980-01-011980
Iowa 398 1.242.00 BrooklynUS 6 near Brooklyn 01956-01-01195601980-01-011980
Iowa 400 4.547.31 TruroI-35 near Truro 01958-01-01195801980-01-011980
Iowa 403 0.701.13 CushingUS 20 near Cushing 01958-01-01195801980-01-011980
Iowa 405 0.240.39 Lone TreeLone Tree city limits 01958-01-01195802003-01-012003 Turned over within city limits
Iowa 408 7.4011.91 US 169 near Lu VerneLu Verne 01957-01-01195701980-01-011980
Iowa 412 4.727.60 US 63 in WaterlooUS 218 in Waterloo 01960-01-01196001983-01-011983 San Marnan Drive in Waterloo
Iowa 413 3.956.36 US 20 in Fort DodgeFort Dodge Municipal Airport 01960-01-01196001980-01-011980
Iowa 424 0.440.71 Britt city limitsUS 18 near Britt 01961-01-01196101980-01-011980
Iowa 426 0.520.84 Iowa 92 near Rose HillRose Hill 01960-01-01196001980-01-011980
Iowa 428 1.211.95 AnamosaUS 151 / Iowa 64 at Anamosa 01965-01-01196501980-01-011980
Iowa 924 4.006.44 Webster–Greene County LineIowa 175 near Farnhamville 01980-01-01198001982-01-011982
Iowa 933 0.741.19 Iowa 141 in PerryIowa 141 in Perry 01976-01-01197601984-01-011984 Former section of Iowa 141
Iowa 934 1.071.72 US 61 near BurlingtonUS 61 near Burlington 01976-01-01197601980-01-011980 Former section of US 61; now Memorial Park Road
Iowa 935 0.771.24 01976-01-01197601981-01-011981 Former section of US 34 parallel to Business US 34 in Burlington
Iowa 938 1.572.53 Iowa 947 near ManchesterManchester Fish Hatchery 01976-01-01197601980-01-011980 Former Iowa 116
Iowa 939 6.7610.88 US 65Iowa 2 near Corydon 01976-01-01197601980-01-011980 Former section of Iowa 2
Iowa 940 2.514.04 01976-01-01197601980-01-011980 Former sections of Iowa 2
Iowa 941 2.994.81 County Road J18 in MoraviaIowa 5 near Moravia 01976-01-01197601980-01-011980 Former section of Iowa 5
Iowa 942 5.709.17 Iowa 5 near MoraviaCounty Road J18 in Moravia 01976-01-01197601980-01-011980 Former sections of Iowa 5
Iowa 943 0.691.11 01974-01-01197401980-01-011980 Former section of Iowa 13 in Central City
Iowa 944 0.991.59 Iowa 13 in ManchesterIowa 13 in Manchester 01976-01-01197601980-01-011980 Former section of Iowa 13
Iowa 946 2.724.38 Luana city limitsUS 18 / US 52 in Monona 01976-01-01197601980-01-011980 Former section of US 18 / US 52 concurrency; two sections
Iowa 947 23.7538.22 Iowa 187Dyersville city limits 01976-01-01197601981-01-011981 Former section of US 20
Iowa 951 2.654.26 US 34 west of OsceolaUS 34 near Osceola 01976-01-01197601980-01-011980 Former section of US 34
Iowa 952 0.180.29 01978-01-01197801982-01-011982 Former section of US 67 north of Clinton
Iowa 953 0.891.43 Iowa 38 near MuscatineIowa 38 in Muscatine 01976-01-01197601980-01-011980 Former section of Iowa 38
Iowa 959 1.272.04 US 65 / US 69 in Des MoinesDes Moines city limits 01970-01-01197001981-01-011981 Former section of US 65 / US 69 concurrency
Iowa 960 1.582.54 Clarinda city limitsIowa 2 near Clarinda 01973-01-01197301982-01-011982 Former section of Iowa 2
Iowa 961 0.560.90 Villisca city limitsUS 71 near Villisca 01976-01-01197601980-01-011980 Former section of US 71
Iowa 965 3.295.29 01976-01-01197601980-01-011980 Former section of US 52
Iowa 969 0.520.84 US 169 near BurtBurt 01976-01-01197601980-01-011980 former Iowa 422
Iowa 971 10.7817.35 Iowa 2US 59 in Shenandoah 01975-01-01197501979-01-011979 Former section of Iowa 2
Iowa 972 10.1716.37 Iowa 92 / US 169 in WintersetUS 169 01974-01-01197401980-01-011980 Former section of US 169
Iowa 973 1.492.40 Iowa 92 in WintersetIowa 972 in Winterset 01976-01-01197601980-01-011980 Former section of Iowa 92
Iowa 976 2.003.22 US 218Mount Pleasant city limits 01974-01-01197401980-01-011980 Former section of US 218; formerly Iowa 972
Iowa 980 0.771.24 US 34 near OttumwaOttumwa city limits 01967-01-01196701980-01-011980 Former section of US 34; formerly US 34 Alternate
Iowa 981 0.440.71 Iowa 150 near FayetteFayette city limits 01967-01-01196701980-01-011980 Former section of Iowa 150; formerly Iowa 991
Iowa 983 0.811.30 US 34 west of CharitonUS 34 east of Chariton 01967-01-01196701980-01-011980 Former section of US 34; formerly Iowa 995 and Iowa 996
Iowa 984 2.243.60 Bettendorf city limitsUS 67 in Le Claire 01968-01-01196801982-01-011982 Former section of Iowa 417
Iowa 999 2.223.57 Spruce Street in College SpringsIowa 333 near College Springs 01961-01-01196101980-01-011980 Former section of Iowa 333
  •       Former

Routes added

Number Length (mi)[14] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
Iowa 79 5.649.08 Geode State ParkUS 34 in Middletown 01980-01-01198002003-01-012003
Iowa 91 4.647.47 Iowa 9 in Lyon CountyMN 91 at the Minnesota state line 01980-01-01198002003-01-012003
Iowa 100 2.74[15]4.41 I-380 in Cedar RapidsUS 151 in Cedar Rapids 01984-01-011984current
Iowa 102 15.9625.69 Iowa 163 in PellaUS 63 / Iowa 146 in New Sharon 01980-01-011980current
Iowa 115 1.242.00 US 34 near StantonViking Lake State Park 01980-01-01198002003-01-012003
Iowa 134 1.752.82 Beed's Lake State ParkIowa 3 near Hampton 01980-01-01198001987-01-011987
Iowa 142 20.9633.73 Iowa 2 in PlanoIowa 5 near Moravia 01980-01-01198002003-01-012003
Iowa 152 1.342.16 I-35 near OsceolaUS 69 at Osceola 01980-01-01198002014-01-012014
Iowa 186 3.385.44 Green Valley State ParkIowa 25 in Creston 01980-01-01198002001-01-012001
Iowa 192 4.747.63 I-29 / I-80 at Council BluffsI-29 at Council Bluffs 01931-01-01193102017-01-012017 Was decommissioned in 1975, but restored in 1980
Iowa 243 0.560.90 Black Hawk Lake State ParkUS 71 / Iowa 175 near Wall Lake 01980-01-01198002003-01-012003
Iowa 244 0.681.09 I-80 near NeolaIowa 191 in Neola 01980-01-01198002003-01-012003
Iowa 362 5.098.19 Wilson State ParkI-29 at Loveland 01980-01-01198002003-01-012003
Iowa 394 10.6717.17 Route B at St. Francisville, Mo.US 218 near Donnellson 01980-01-01198002005-01-012005 Replaced by Iowa 27
Iowa 403 0.470.76 SD 48 near AkronIowa 12 in Akron 01980-01-01198002003-01-012003
Iowa 428 5.759.25 Maquoketa Caves State ParkUS 61 near Maquoketa 01980-01-01198002003-01-012003
Iowa 918 1.12[15]1.80 Iowa 16 near EldonIowa 16 in Eldon 01984-01-01198402003-01-012003 Former section of Iowa 16
Iowa 919 0.29[15]0.47 Iowa 363 in UrbanaWalnut Street in Urbana 01984-01-01198401995-01-011995 Former section of Iowa 363
Iowa 920 12.61[15]20.29 Center PointIowa 150 near Urbana 01984-01-01198402003-01-012003 Former section of Iowa 150
Iowa 921 12.47[15]20.07 Iowa 920 in Center PointHiawatha 01984-01-01198401985-01-011985 Former section of Iowa 150
Iowa 922 1.27[15]2.04 US 61 in MuscatineIowa 22 in Muscatine 01984-01-01198401986-01-011986 Former section of US 61; became part of an extended Iowa 38
Iowa 923 4.52[16]7.27 01982-01-01198202003-01-012003 Former section of US 218; had three sections
Iowa 925 24.3239.14 I-80 / US 6 in AdairUS 6 near Dexter 01980-01-01198002003-01-012003 Former section of US 6
Iowa 926 6.6310.67 US 6 in AltoonaUS 6 / Iowa 14 in Newton 01980-01-01198001988-01-011988 Former section of US 6
Iowa 927 19.0230.61 US 6 / Iowa 38 in WiltonI-280 / US 6 near Davenport 01980-01-01198002003-01-012003 Former section of US 6
Iowa 928 17.1527.60 Iowa 17 near Webster CityCR D20 near Williams 01980-01-01198002003-01-012003 Former section of US 20
Iowa 929 0.791.27 Murray city limitsMaple Street in Murray 01980-01-01198002003-01-012003 Former section of Iowa 152
Iowa 931 8.4713.63 I-35 in AnkenyUS 65 in Polk County 01980-01-01198002003-01-012003
Iowa 935 1.38[16]2.22 I-29Mills–Pottawattamie county line 01982-01-01198202003-01-012003 Former section of Iowa 370
Iowa 938 0.460.74 UnionvilleUnionville city limits 01980-01-01198002003-01-012003 Former section of Iowa 369
Iowa 939 12.3719.91 IndependenceIowa 187 near Masonville 01980-01-01198002003-01-012003 Former section of US 20
Iowa 942 0.470.76 WoodburnWoodburn city limits 01980-01-01198002003-01-012003 Former section of Iowa 104
Iowa 943 0.430.69 GalvaGalva city limits 01980-01-01198001987-01-011987 Former section of Iowa 328
Iowa 944 0.560.90 US 61 / Iowa 2 in Fort MadisonFort Madison city limits 01980-01-01198002003-01-012003 Former section of Iowa 88
Iowa 945 4.617.42 I-80 near AltoonaIowa 931 in Polk County 01980-01-01198002003-01-012003
Iowa 950 3.355.39 US 6 / US 65 in AltoonaIowa 163 in Pleasant Hill 01980-01-01198001994-01-011994 Now 34th Avenue/56th Street
Iowa 951 3.15[15]5.07 Carbon city limitsIowa 148 01983-01-01198301993-01-011993 Former section of Iowa 95
Iowa 960 1.11[16]1.79 01982-01-01198201986-01-011986 Former section of US 61
Iowa 985 1.953.14 US 52 near Bellevue State ParkUS 52 near Bellevue 01980-01-01198002003-01-012003
  •       Former

Existing route changes

Number Change in length Southern or western terminus Northern or eastern terminus Formed Removed Notes
mi[lower-alpha 1] km
Iowa 21 12.4219.99 Iowa 149 near HedrickIowa 92 near Delta 01934-01-011934current Extended south from Iowa 92
Iowa 25 -6.99−11.25 BlocktonIowa 2 near Benton 01926-01-011926current Continued south to Blockton
Iowa 28 6.189.95 Iowa 5 in Des MoinesUS 6 in Des Moines 01926-01-011926current Extended north from Iowa 5
Iowa 72 3.165.09 DowsI-35 east of Dows 01920-01-01192001986-01-011986 Extended east from Dows
Iowa 139 -12.25−19.71 ProtivinIowa 9 at Cresco 01930-01-011930current Spur route to Protivin removed
Iowa 140 15.5525.03 KingsleyIowa 3 at Remsen 01926-01-011926current Extended north from Kingsley
Iowa 145 3.135.04 I-29 near ThurmanThurman 01931-01-01193102003-01-012003 Extended west from Thurman
Iowa 150 -11.05[lower-alpha 2]−17.78 US 151 in Cedar Rapids
US 218 at Vinton
Iowa 101 in Benton County
Iowa 920 in Benton County
01941-01-011941current Rerouted over Iowa 101 in 1984
Iowa 160 1.242.00 US 69 at AnkenyI-35 at Ankeny 01947-01-011947current Extended east within Ankeny
Iowa 173 11.5318.56 Iowa 83 near AtlanticElk Horn 01930-01-011930current Extended south from Elk Horn
Iowa 210 19.5831.51 Iowa 141 near WoodwardSlater 01931-01-011931current Rerouted over Iowa 89
Iowa 212 -10.02−16.13 Iowa 21 near Belle PlaineUS 30 near Chelsea 01934-01-011934current Continued northwest to US 30 until 1980
Iowa 220 -2.20[lower-alpha 3]−3.54 Upper South Amana
Iowa 149 at Amana
US 6 / Iowa 149 at South Amana
East Amana
01931-01-011931current Continued east to East Amana and south to Upper South Amana until 1980
Iowa 223 6.9411.17 Iowa 330 near BaxterBaxter 01931-01-01193101997-01-011997 Extended west from Baxter
Iowa 224 9.3715.08 KelloggIowa 14 near Laurel 01931-01-011931current Extended north from Kellogg in 1980
Iowa 281 17.2927.83 DunkertonIowa 150 at Oelwein 01935-01-011935current Rerouted over Iowa 190
Iowa 333 -3.77−6.07 FremontPage county line near Northboro
I-29 at Hamburg
US 71 near Braddyville
US 59 near Northboro
01935-01-011935current Route swap
  •       Former

Notes

  1. Calculated by subtracting the 1978 mileage from the 1980 mileage[13][14]
  2. Calculated by subtracting the 1980 mileage from the 1984 mileage[14][15]
  3. Calculated by subtracting the 1980 mileage from the 1982 mileage[14][16]

References

  1. 1634–1699: McCusker, J. J. (1997). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States: Addenda et Corrigenda (PDF). American Antiquarian Society. 1700–1799: McCusker, J. J. (1992). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States (PDF). American Antiquarian Society. 1800–present: Federal Reserve Bank of Minneapolis. "Consumer Price Index (estimate) 1800–". Retrieved May 28, 2023.
  2. "Roads and Fuel Taxes". Laws of the 67th General Assembly, Chapter No. 1108 of 1978 (PDF). Iowa General Assembly. pp. 575–588. Retrieved August 19, 2020.
  3. 1 2 Evans, Randy (August 17, 1980). "Officials Chafe at 'Inheriting' State Highways". The Des Moines Register. pp. 1, 12. Retrieved August 19, 2020.
  4. 1 2 Piller, Dan (July 29, 1979). "Roads: An Explosive Issue for the 1980s". The Des Moines Register. p. 1. Retrieved August 19, 2020 via Newspapers.com. Open access icon
  5. 1979 Iowa Code (1978). "Establishment, Alteration, and Vacation of Highways". §§306.1–306.42 (PDF). pp. 1397–1405.{{cite book}}: CS1 maint: numeric names: authors list (link)
  6. Hoffmann, Rep. Betty (March 18, 1980). "Legislative report..." The Muscatine Journal. p. 4. Retrieved August 20, 2020 via Newspapers.com. Open access icon
  7. Schmidt, Vernice (August 31, 1979). "Grundy County Wins First Round in Battle on Highway Jurisdiction". The Waterloo Courier. p. 16. Retrieved August 20, 2020 via Newspapers.com. Open access icon
  8. "Lyon, Sioux Roads Reshuffle Talk Set". Sioux City Journal. December 13, 1980. p. 3. Retrieved August 20, 2020 via Newspapers.com. Open access icon
  9. "Section of Highway 150 May Lose Primary Status". The Gazette. Cedar Rapids. August 19, 1979. p. 20A. Retrieved August 20, 2020 via Newspapers.com. Open access icon
  10. 1979 Iowa Code (1978), p. 1400.
  11. Bunton, Kristie (January 18, 1984). "Local Road: The Old Highway Nobody Wants". Iowa City Press-Citizen. p. 2. Retrieved August 20, 2020 via Newspapers.com. Open access icon
  12. Walsh, Tom (June 25, 1985). "IDOT Officials May Hope to Open Highway, Close Deal". The Gazette. Cedar Rapids. p. 11. Retrieved August 20, 2020 via Newspapers.com. Open access icon
  13. 1 2 1978 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. December 31, 1978. Retrieved August 19, 2020.
  14. 1 2 3 4 1980 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. December 31, 1980. Retrieved August 19, 2020.
  15. 1 2 3 4 5 6 7 8 1984 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. August 1985. Retrieved August 19, 2020.
  16. 1 2 3 4 1982 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. December 31, 1982. Retrieved August 19, 2020.
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