List of Iowa state highways

Highway names
Highway markers from different years
Interstates:	Interstate nn (I-nn)
US Highways:	U.S. Highway nn (US nn)
State:	Iowa nn
System links
Iowa Primary Highway System Interstate U.S. State Secondary Scenic

State highways in the U.S. state of Iowa are owned and maintained by the Iowa Department of Transportation.

Number	Length (mi)^[1]	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
Primary0001 !No. 1	—	—	Missouri state line near Lamoni	Minnesota state line near Northwood	1920	1926	Jefferson Highway through Iowa; became US 65
IA0001 !Iowa 1	119.268	191.943	Iowa 2 south of Keosauqua	US 151 south of Anamosa	1926	current
IA 19260002 !Iowa 2	232	373	US 6 near Lewis	IL 2 at Muscatine	1920	1939	Became Iowa 92
IA0002 !Iowa 2	251.376	404.550	N-2 at Nebraska City, Neb.	US 61 at Fort Madison	1940	current
IA 19260003 !Iowa 3	264	425	N-2 at Nebraska City, Neb.	IL 9 at Fort Madison	1920	1941	Became Iowa 2
IA0003 !Iowa 3	326.163	524.908	SD 50 near Westfield	US 52 / US 61 / US 151 in Dubuque	1945	current
IA 19610004 !Iowa 4	24	39	US 59 / Iowa 141 at Denison	Iowa 175 at Odebolt	1920	1968	Became Iowa 39
IA0004 !Iowa 4	146.343	235.516	Iowa 44 in Panora	MN 4 near Estherville	1969	current
IA 19610005 !Iowa 5	74	119	Iowa 3 near Aurelia	US 169 at Fort Dodge	1920	1968	Became Iowa 7
IA0005 !Iowa 5	103.540	166.631	Route 5 south of Cincinnati	I-35 near West Des Moines	1969	current
Primary0006 !No. 6	358	576	Nebraska state line at Council Bluffs	Illinois state line at Clinton	1920	1926	Lincoln Highway through Iowa
IA 19260006 !Iowa 6	101	163	Missouri state line near Cincinnati	US 63 in Des Moines	1926	1931	Became Iowa 60 due to extension of US 6
IA 19260007 !Iowa 7	140	225	US 6 at Council Bluffs	City US 6 in Des Moines	1920	1939	Became Iowa 64
IA 19260007 !Iowa 7	0.5	0.8	Iowa 99 in Oakville	Oakville	1955	1957
IA 19260007 !Iowa 7	22	35	I-29 / US 77 in Sioux City	Iowa 3 near Brunsville	1957	1968
IA0007 !Iowa 7	73.661	118.546	Iowa 3 near Aurelia	US 169 at Fort Dodge	1969	current
Primary0008 !No. 8	—	—	Nebraska state line at Council Bluffs	Illinois state line at Burlington	1920	1926	Became US 34
IA0008 !Iowa 8	13.961	22.468	US 63 in Traer	US 218 near Garrison	1926	current
IA0009 !Iowa 9	295.088	474.898	SD 42 near Larchwood	WIS 82 at Lansing	1920	current
IA0010 !Iowa 10	104.512	168.196	SD 46 near Hawarden	Iowa 4 at Havelock	1920	current
IA 19260011 !Iowa 11	98	158	US 151 / Iowa 64 in Cedar Rapids	US 52 / Iowa 24 in Calmar	1920	1941	Became Iowa 150
IA0012 !Iowa 12	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
IA0013 !Iowa 13	85.235	137.172	US 30 / US 151 near Bertram	US 52 near Froelich	1920	current
IA0014 !Iowa 14	187.838	302.296	Iowa 2 at Corydon	US 18 / US 218 Bus in Charles City	1920	current
IA 19260015 !Iowa 15	111	179	US 30 in Ames	Minnesota state line near Lake Mills	1920	1935	Became US 69
IA 19610015 !Iowa 15	14	23	US 63 in Ottumwa	Iowa 137 at Eddyville	1937	1968	Became Iowa 23
IA 19610015 !Iowa 15	4.655	7.491	Route 15 south of Milton	Iowa 2 at Milton	1969	2003
IA0015 !Iowa 15	63.578	102.319	Iowa 3 near Pocahontas	MN 15 near Armstrong	1969	current
IA 19260016 !Iowa 16	—	—	Missouri state line near Redding	Minnesota state line near Ledyard	1920	1930
IA0016 !Iowa 16	65.488	105.393	US 34 near Agency	US 61 at Wever	1930	current
IA 19610017 !Iowa 17	—	—	Iowa 64 in Panora	MN 4 near Estherville	1920	1968
IA0017 !Iowa 17	102.789	165.423	Iowa 141 at Granger	US 18 near Wesley	1969	current
Primary0018 !No. 18	—	—	Missouri state line at Braddyville	No. 23 at Sac City	1920	1926	Became part of US 71
Primary0019 !No. 19	—	—	South Dakota state line near Inwood	Wisconsin state line at Lansing	1920	1926	Became US 18
IA 19260019 !Iowa 19	—	—	Backbone State Park	Iowa 3 / Iowa 13 near Strawberry Point	1927	1957
Primary0020 !No. 20	—	—	Missouri state line at Keokuk	Minnesota state line near Cresco	1920	1926	Became parts of US 61 and US 55
IA 19260021 !Iowa 21	—	—	Iowa 141 near Denison	Minnesota state line near Allendorf	1920	1934
IA0021 !Iowa 21	97.152	156.351	Iowa 149 near Hedrick	US 20 / Iowa 27 at Waterloo	1934	current
Primary0022 !No. 22	—	—	Nebraska state line at Sioux City	Minnesota state line near Rock Rapids	1920	1926	Became part of US 75
IA0022 !Iowa 22	97.905	157.563	Iowa 21 near Thornburg	US 61 at Davenport	1926	current
Primary0023 !No. 23	—	—	South Dakota state line at Sioux City	No. 5 in Fort Dodge	1920	1926	Became part of US 20
IA 19260023 !Iowa 23	—	—	Route 15 south of Milton	Iowa 2 at Milton	1926	1968
IA 19610023 !Iowa 23	14.316	23.039	US 63 in Ottumwa	Iowa 137 at Eddyville	1969	1997	Replaced by US 63 and county roads
IA0023 !Iowa 23	16.022	25.785	Iowa 92 at Oskaloosa	Iowa 149 near Fremont	1997	current
IA0024 !Iowa 24	27.546	44.331	US 18 / US 63 in New Hampton	US 52 / Iowa 150 in Calmar	1928	current
IA0025 !Iowa 25	103.419	166.437	Iowa 2 near Benton	US 30 near Scranton	1926	current
IA0026 !Iowa 26	11.370	18.298	Iowa 9 in Lansing	MN 26 at New Albin	1969	current
AOTS0027 !Iowa 27	281.689	453.335	Route 27 near Wayland, Mo.	I-35 at the Minnesota state line	2001	current	Avenue of the Saints
IA0028 !Iowa 28	21.613	34.783	Iowa 92 at Martensdale	I-35 / I-80 at Johnston	1926	current
IA0031 !Iowa 31	38.504	61.966	US 59 near Quimby	Iowa 141 near Smithland	1920	current
IA0032 !Iowa 32	5.101	8.209	US 20 at Dubuque	US 52 / Iowa 3 at Sageville	1995	2017
IA 19610036 !Iowa 36	2.983	4.801	Wall Lake	US 71 near Wall Lake	1920	2003	Spur route
IA0037 !Iowa 37	40.321	64.890	Iowa 175 near Turin	US 59 near Earling	1920	current
IA0038 !Iowa 38	98.941	159.230	US 61 Bus / Iowa 92 in Muscatine	Iowa 3 near Edgewood	1920	current
IA0039 !Iowa 39	24.321	39.141	US 59 at Denison	Iowa 175 at Odebolt	1969	current
IA 19610040 !Iowa 40	3.524	5.671	Allerton	Iowa 2 near Corydon	1926	2003	Spur route
IA 19610041 !Iowa 41	1.827	2.940	Malvern	US 34 near Malvern	1920	2003	Spur route
IA0044 !Iowa 44	104.524	168.215	US 30 near Logan	Iowa 141 at Grimes	1969	current
IA 19610045 !Iowa 45	1.324	2.131	Manilla	Iowa 141 near Manilla	1920	2003	Spur route
IA0048 !Iowa 48	47.919	77.118	US 59 at Shenandoah	US 6 near Lewis	1920	current
IA 19610049 !Iowa 49	27.228	43.819	Iowa 2 in Bedford	US 34 in Adams County	1920	2003
IA 19610050 !Iowa 50	7.135	11.483	US 169 near Lehigh	Lehigh	1920	2003	Spur route
IA0051 !Iowa 51	11.007	17.714	US 18 / US 52 at Postville	Iowa 9 near Waukon	1920	current
IA 19610055 !Iowa 55	4.506	7.252	Seymour	Iowa 2 near Promise City	1934	2003	Spur route
IA0056 !Iowa 56	24.432	39.319	Iowa 150 at West Union	Iowa 13 at Elkader	1920	current
IA0057 !Iowa 57	43.765	70.433	US 65 near Iowa Falls	US 218 / Iowa 27 / Iowa 58 at Cedar Falls	1986	current
IA0058 !Iowa 58	12.030	19.360	US 63 at Hudson	US 218 / Iowa 27 / Iowa 57 at Cedar Falls	1920	current
IA0060 !Iowa 60	223.8	360.2	Route 5 south of Cincinnati	US 18 near Wesley	1920	1968	Replaced by Iowa 5 and Iowa 17
IA0060 !Iowa 60	58.771	94.583	US 75 at Le Mars	MN 60 at Bigelow, Minn.	1969	current
IA0062 !Iowa 62	19.633	31.596	Iowa 64 at Maquoketa	US 52 in Bellevue	1920	current
IA0064 !Iowa 64	64.355	103.569	US 151 at Anamosa	US 52 / IL 64 at Savanna, Ill.	1936	current
IA 19610066 !Iowa 66	7.011	11.283	Iowa 2 near Diagonal	Diagonal	—	2003	Spur route
IA 19610068 !Iowa 68	1.933	3.111	Melrose	US 34 near Melrose	—	2003	Spur route
IA0070 !Iowa 70	23.954	38.550	Iowa 92 at Columbus Junction	US 6 in West Liberty	1969	current
IA0076 !Iowa 76	48.911	78.715	US 18 near McGregor	MN 76 near Eitzen, Minn.	1969	current
IA 19610077 !Iowa 77	2.685	4.321	Iowa 92 near Keota	Keota	—	2003	Spur route
IA0078 !Iowa 78	58.429	94.032	Iowa 149 near Martinsburg	US 61 near Morning Sun	1920	current
IA 19610079 !Iowa 79	5.637	9.072	Geode State Park	US 34 in Middletown	1980	2003	Park access road
IA0081 !Iowa 81	2.215	3.565	Route 81 near Farmington	Iowa 2 near Farmington	1969	current
IA 19610082 !Iowa 82	3.773	6.072	Blairstown	US 30 near Blairstown	—	2003	Spur route
IA0083 !Iowa 83	34.191	55.025	US 59 in Avoca	Iowa 148 in Anita	1920	current
IA0085 !Iowa 85	8.408	13.531	Montezuma city limits	Iowa 21 near Deep River	1920	current
IA0086 !Iowa 86	12.519	20.147	US 71 near Milford	MN 86 near Spirit Lake	1981	current
IA 19610091 !Iowa 91	4.643	7.472	Iowa 9 in Lyon County	MN 91 at the Minnesota state line	1980	2003
IA0092 !Iowa 92	274.231	441.332	US 275 / N-92 in Council Bluffs	IL 92 at Muscatine	1939	current
IA0093 !Iowa 93	29.534	47.530	US 63 near Tripoli	Iowa 150 in Fayette	1920	current
IA 19610094 !Iowa 94	11.168	17.973	US 151 Business in Cedar Rapids	Palo	1966	2003	Spur route
IA0096 !Iowa 96	16.635	26.771	Iowa 14 near Gladbrook	US 63 near Gladbrook	1920	current
IA 19610097 !Iowa 97	1.532	2.466	Russell	Russell	—	2003	Spur route
IA0098 !Iowa 98	1.814	2.919	Leando	Iowa 16 near Douds	1944	current	Spur route
IA 19610099 !Iowa 99	33.232	53.482	US 34 in Burlington	US 61 in Wapello	1931	2003
IA0100 !Iowa 100	8.285	13.333	Edgewood Road in Cedar Rapids	US 151 / Iowa 13 near Marion	1984	current
IA 19610101 !Iowa 101	15.56	25.04	US 218 in Vinton	Iowa 150 north of Urbana	1920	1984	Replaced by a relocated Iowa 150
IA0102 !Iowa 102	0.501	0.806	New Sharon city limits	US 63 / Iowa 146 in New Sharon	1980	current	Unsigned highway
IA 19610103 !Iowa 103	15.649	25.185	US 218 near Donnellson	US 61 / Iowa 2 in Fort Madison	—	2003
IA 19610107 !Iowa 107	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
IA 19610109 !Iowa 109	1.268	2.041	Oxford	US 6 near Oxford	—	2003	Spur route
IA0110 !Iowa 110	14.789	23.801	US 20 at Schaller	Iowa 7 at Storm Lake	1934	current
IA 19610113 !Iowa 113	1.187	1.910	Iowa 64 near Spragueville	Spragueville	1938	2003	Spur route
IA 19610115 !Iowa 115	1.237	1.991	US 34 near Stanton	Viking Lake State Park	1980	2003	Park access road
IA0116 !Iowa 116	2.776	4.468	US 218 near Waverly	Iowa 3 in Waverly	1998	current	Section of US 218 Business in Waverly
IA0117 !Iowa 117	18.562	29.873	Iowa 163 at Prairie City	US 65 / Iowa 330 near Mingo	1936	current
IA0122 !Iowa 122	12.264	19.737	I-35 / US 18 at Clear Lake	Mason City city limits	1999	current
IA 19610124 !Iowa 124	2.567	4.131	Iowa 4 in Calhoun County	Twin Lakes State Park	1924	2003	Park access road
IA0127 !Iowa 127	15.985	25.725	I-29 near Mondamin	US 30 in Logan	1924	current
IA0128 !Iowa 128	6.982	11.236	Iowa 13 near Elkader	US 52 near Garnavillo	1924	current
IA0130 !Iowa 130	32.023	51.536	Iowa 38 in Tipton	I-80 / US 61 at Davenport	1969	current
IA 19610131 !Iowa 131	4.520	7.274	Iowa 21 in Belle Plaine	US 30 near Belle Plaine	—	2003	Part of the Lincoln Highway
IA 19610133 !Iowa 133	0.970	1.561	US 30 in Nevada	Nevada	1963	2003	Spur route
IA0136 !Iowa 136	97.733	157.286	IL 136 at Clinton	US 52 / Iowa 3 at Luxemburg	1926	current
IA0137 !Iowa 137	14.526	23.377	Iowa 5 at Albia	US 63 / Iowa 163 at Eddyville	1934	current
IA0139 !Iowa 139	11.431	18.396	Iowa 9 near Cresco	MN 139 near Harmony, Minn	1930	current
IA0140 !Iowa 140	25.309	40.731	US 20 at Moville	Iowa 3 at Remsen	1926	current
IA0141 !Iowa 141	155.362	250.031	I-29 near Sloan	I-35 / I-80 at Grimes	1926	current
IA 19610142 !Iowa 142	20.901	33.637	Iowa 2 in Plano	Iowa 5 near Moravia	—	2003
IA0143 !Iowa 143	12.049	19.391	Iowa 3 at Marcus	Iowa 10 at Granville	1926	current
IA0144 !Iowa 144	34.039	54.780	Iowa 141 at Perry	Iowa 175 near Harcourt	1926	current
IA 19610145 !Iowa 145	7.408	11.922	I-29 near Thurman	US 275 near Sidney	—	2003
IA0146 !Iowa 146	42.735	68.775	US 63 / Iowa 102 in New Sharon	US 30 in Le Grand	1926	current
IA 19610147 !Iowa 147	6.706	10.792	Rockford	Iowa 14 in Floyd County	—	2003	Spur route
IA0148 !Iowa 148	66.828	107.549	Route 148 near Bedford	I-80 / US 6 near Anita	1926	current
IA0149 !Iowa 149	65.897	106.051	US 34 in Ottumwa	I-80 near Williamsburg	1926	current
IA0150 !Iowa 150	85.093	136.944	US 218 at Vinton	US 52 / Iowa 24 at Calmar	1941	current
IA 19610152 !Iowa 152	1.402	2.256	I-35 near Osceola	US 69 at Osceola	1980	2014
IA 19610156 !Iowa 156	4.748	7.641	Iowa 5 near Marysville	Bussey	—	2003	Spur route
IA 19610157 !Iowa 157	1.032	1.661	US 63 near Lime Springs	Lime Springs	—	2003	Spur route
IA0160 !Iowa 160	2.446	3.936	Iowa 415 at Ankeny	I-35 at Ankeny	1947	current
IA 19610161 !Iowa 161	1.224	1.970	Iowa 141 at Dedham	Iowa 141 near Dedham	—	2003
IA0163 !Iowa 163	166.270	267.586	US 69 in Des Moines	US 34 at Burlington	1937	current
IA0165 !Iowa 165	0.410	0.660	Abbott Drive at Omaha, Neb.	Abbott Drive at Omaha, Neb.	1957	current	Only state highway west of the Missouri River
IA0173 !Iowa 173	14.680	23.625	Iowa 83 near Atlantic	Iowa 44 at Kimballton	1930	current
IA0175 !Iowa 175	221.367	356.256	N-51 at Decatur, Neb	US 63 near Hudson	1930	current
IA 19610181 !Iowa 181	9.596	15.443	Iowa 5 / Iowa 92 near Pleasantville	Melcher-Dallas	—	2003	Spur route
IA0182 !Iowa 182	9.051	14.566	US 18 in Inwood	Iowa 9 near Larchwood	1969	current
IA0183 !Iowa 183	29.952	48.203	Iowa 127 near Mondamin	Iowa 141 in Ute	1930	current
IA0187 !Iowa 187	28.385	45.681	US 20 near Masonville	Iowa 150 near Fayette	1931	current
IA0188 !Iowa 188	24.231	38.996	Iowa 3 near Clarksville	US 63 near Tripoli	1945	current
IA0191 !Iowa 191	22.790	36.677	I-680 near Neola	Iowa 37 at Earling	1930	current
IA0192 !Iowa 192	6.647	10.697	I-29 / I-80 at Council Bluffs	I-29 at Council Bluffs	1980	2016
IA 19610193 !Iowa 193	10.852	17.465	US 18 in Fayette County	Iowa 24 in Jackson Junction	—	2003
IA 19610195 !Iowa 195	2.896	4.661	Iowa 4 near Plover	Plover	—	2003	Spur route
IA0196 !Iowa 196	10.136	16.312	US 71 / Iowa 175 near Lake View	US 20 near Sac City	1935	2015
IA 19610197 !Iowa 197	2.567	4.131	Iowa 3 near Albert City	Albert City	—	2003	Spur route
IA 19610198 !Iowa 198	2.231	3.590	Garrison	US 218 near Garrison	—	2003	Spur route
IA 19610199 !Iowa 199	2.666	4.291	Van Horne	US 218 near Van Horne	—	2003	Spur route
IA 19610200 !Iowa 200	2.163	3.481	US 30 near Keystone	Keystone	—	2003	Spur route
IA 19610201 !Iowa 201	4.755	7.652	Norway	US 30 / US 218 near Atkins	—	2003	Spur route
IA0202 !Iowa 202	10.461	16.835	Route 202 at Coatsville, Mo	Iowa 2 near Moulton	1969	current
IA 19610204 !Iowa 204	5.407	8.702	Iowa 2 near Garden Grove	Garden Grove	—	2003	Spur route
IA 19610205 !Iowa 205	2.927	4.711	US 65 near Milo	Milo	—	2003	Spur route
IA 19610206 !Iowa 206	6.221	10.012	US 65 near Liberty Center	Liberty Center	—	2003	Spur route
IA 19610207 !Iowa 207	3.058	4.921	I-35 near New Virginia	New Virginia	—	2003	Spur route
IA 19610209 !Iowa 209	0.5	0.8	Iowa 149 near Conroy	Conroy	1931	1975	Spur route
IA0210 !Iowa 210	34.781	55.975	Iowa 141 near Woodward	US 65 near Collins	1938	current
IA0212 !Iowa 212	12.157	19.565	Iowa 21 near Belle Plaine	US 6 at Marengo	1934	current
IA 19610214 !Iowa 214	5.736	9.231	Iowa 175 near Ivester	Wellsburg	—	2003	Spur route
IA 19610215 !Iowa 215	8.738	14.062	Union	Iowa 175 in Eldora	—	2003	Spur route
IA0220 !Iowa 220	7.233	11.640	US 6 at South Amana	US 151 at Amana	1930	current
IA 19610221 !Iowa 221	3.909	6.291	I-35 near Story City	Roland	—	2003	Spur route
IA0224 !Iowa 224	10.587	17.038	US 6 near Kellogg	Iowa 14 near Laurel	1930	current
IA 19610225 !Iowa 225	7.688	12.373	Sully	Iowa 146 in Searsboro	—	2003	Spur route
IA 19610229 !Iowa 229	5.233	8.422	Garwin	US 63 in Tama County	—	2003	Spur route
IA 19610231 !Iowa 231	4.068	6.547	US 34 west of New London	US 34 east of New London	—	2003	Former section of US 34
IA 19610238 !Iowa 238	1.063	1.711	Iowa 9 near Harris	Harris	—	2003	Spur route
IA 19610239 !Iowa 239	0.510	0.821	Waubonsie State Park	Iowa 2 in Fremont County	1931	2003	Park access road
IA 19610240 !Iowa 240	6.389	10.282	Royal	US 71 in Clay County	—	2003	Spur route
IA 19610242 !Iowa 242	5.855	9.423	US 34 in Mills County	Silver City	—	2003	Spur route
IA 19610243 !Iowa 243	0.559	0.900	Black Hawk Lake State Park	US 71 / Iowa 175 near Wall Lake	1980	2003	Park access road
IA 19610244 !Iowa 244	0.771	1.241	I-80 near Neola	Iowa 191 in Neola	—	2003
IA 19610249 !Iowa 249	0.665	1.070	Iowa 78 near Winfield	Winfield	—	2003	Spur route
IA 19610252 !Iowa 252	0.584	0.940	US 61 / Iowa 92 near Grandview	Grandview	—	2003	Spur route
IA 19610253 !Iowa 253	0.932	1.500	Iowa 14 near Williamson	Williamson	—	2003	Spur route
IA 19610258 !Iowa 258	1.989	3.201	I-35 near Van Wert	US 69 near Van Wert	—	2003
IA 19610259 !Iowa 259	1.001	1.611	US 169 near Tingley	Tingley	—	2003	Spur route
IA 19610263 !Iowa 263	12.511	20.135	Iowa 14 in Grundy County	US 20 near Cedar Falls	—	2003	Former section of US 20
IA 19610266 !Iowa 266	1.709	2.750	US 69 near Weldon	Weldon	—	2003	Spur route
IA 19610273 !Iowa 273	10.025	16.134	Lake Wapello State Park	US 63 near Drakesville	—	2003	Park access road
IA 19610276 !Iowa 276	4.711	7.582	Spirit Lake city limits	Minnesota state line	—	2003	Park access road
IA 19610279 !Iowa 279	1.983	3.191	US 30 / US 218 near Atkins	Atkins	—	2003	Spur route
IA0281 !Iowa 281	28.166	45.329	Waterloo city limits	Iowa 150 at Oelwein	1936	current
IA 19610282 !Iowa 282	5.283	8.502	Quasqueton	Iowa 939 near Winthrop	—	2003	Spur route
IA 19610285 !Iowa 285	0.796	1.281	US 30 in Arcadia	Arcadia	—	2003	Spur route
IA 19610286 !Iowa 286	9.932	15.984	US 30 in Glidden	Lanesboro	—	2003	Spur route
IA 19610287 !Iowa 287	1.833	2.950	US 30 / US 218 near Newhall	Newhall	—	2003	Spur route
IA 19610294 !Iowa 294	6.147	9.893	Iowa 2 in Decatur County	Grand River	—	2003	Spur route
IA 19610297 !Iowa 297	3.543	5.702	Gilbertville	Raymond	—	2003	Double spur with I-380
IA 19610299 !Iowa 299	5.556	8.942	New Providence	Iowa 175 near Eldora	—	2003	Spur route
IA 19610300 !Iowa 300	1.411	2.271	Modale	I-29 near Modale	—	2003	Spur route
IA 19610301 !Iowa 301	2.045	3.291	I-29 near Little Sioux	Little Sioux	—	2003	Spur route
IA 19610305 !Iowa 305	2.554	4.110	Letts	US 61 / Iowa 92 near Letts	—	2003	Spur route
IA 19610306 !Iowa 306	0.783	1.260	US 65 near Derby	Derby	—	2003	Spur route
IA 19610314 !Iowa 314	6.277	10.102	Ayrshire	US 18 near Ruthven	—	2003	Spur route
IA 19610315 !Iowa 315	4.158	6.692	Iowa 4 near Palmer	Palmer	—	2003	Spur route
IA0316 !Iowa 316	5.183	8.341	Iowa 5 near Swan	Runnells city limits	1935	current	Spur route
IA 19610322 !Iowa 322	2.660	4.281	Pammel State Park	Iowa 92 in Madison County	—	2003	Park access road
IA 19610324 !Iowa 324	0.510	0.821	Iowa 175 near Onawa	Lewis and Clark State Park	—	2003	Park access road
IA 19610325 !Iowa 325	3.617	5.821	Spillville	US 52 near Calmar	—	2003	Spur route
IA 19610327 !Iowa 327	2.070	3.331	Iowa 276 in Spirit Lake	near Orleans	—	2003	Spur route
IA0330 !Iowa 330	47.748	76.843	I-80 / US 6 / US 65 at Altoona	Iowa 14 near Albion	1969	current
IA 19610331 !Iowa 331	1.5	2.4	Eldridge	US 61 near Eldridge	1935	1967	Spur route
IA0333 !Iowa 333	1.558	2.507	I-29 at Hamburg	US 275 in Hamburg	1935	current
IA 19610340 !Iowa 340	2.231	3.590	Pikes Peak State Park	Iowa 76 in McGregor	1936	2003	Park access road
IA0346 !Iowa 346	12.470	20.069	US 218 / Iowa 27 at Nashua	US 18 / US 63 near New Hampton	1937	current
IA 19610347 !Iowa 347	0.8	1.3	Locust Street at Omaha, Neb.	Locust Street at Omaha, Neb.	1937	1986
IA 19610349 !Iowa 349	1.032	1.661	Lake Ahquabi State Park	US 65 / US 69 near Indianola	—	2003	Park access road
IA 19610356 !Iowa 356	0.949	1.527	Milford	West Okoboji	—	2003	Former section of US 71
IA 19610359 !Iowa 359	7.383	11.882	Buckeye	Iowa 941 in Alden	—	2003	Spur route
IA 19610362 !Iowa 362	5.469	8.802	DeSoto National Wildlife Refuge	I-29 at Loveland	—	2003	Park access road
IA 19610363 !Iowa 363	1.616	2.601	Iowa 150 near Urbana	I-380 / Iowa 27 in Urbana	—	2003
IA 19610364 !Iowa 364	6.140	9.881	Iowa 76 near Waukon Junction	Harpers Ferry	—	2003	Spur route
IA 19610370 !Iowa 370	3.265	5.255	N-370 at Bellevue, Neb.	I-29 / US 275 near Council Bluffs	1953	2014
IA 19610371 !Iowa 371	0.715	1.151	Lake Keomah State Park	Iowa 92 near Keomah Village	—	2003	Park access road
IA0376 !Iowa 376	10.334	16.631	I-129 / US 20 / US 75 at Sioux City	US 75 at Sioux City	2001	current	US 75 Business in Sioux City
IA 19610382 !Iowa 382	4.792	7.712	Lake MacBride State Park	Iowa 1 in Solon	—	2003	Park access road
IA 19610383 !Iowa 383	1.311	2.110	US 69 near Randall	Randall	—	2003	Spur route
IA 19610384 !Iowa 384	1.231	1.981	Iowa 25 in Guthrie County	Springbrook State Park	1944	2003	Park access road
IA 19610385 !Iowa 385	3.151	5.071	Pacific Junction	US 34 / US 275 in Glenwood	—	2003	Spur route
IA 19610386 !Iowa 386	2.685	4.321	US 52 / Iowa 3 near Sageville	US 52 / Iowa 3 / Iowa 32 near Dubuque	—	2003
IA 19610387 !Iowa 387	1	2	Davenport Municipal Airport	US 61 3 miles north of Davenport	1953	1978	Spur route
IA 19610390 !Iowa 390	2.113	3.401	South of Plainfield	North of Plainfield	—	2003	Former section of US 218
IA 19610403 !Iowa 403	0.477	0.768	SD 48 near Akron	Iowa 12 in Akron	1980	2003
IA0404 !Iowa 404	1.629	2.622	Iowa 3 in Le Mars	US 75 at Le Mars	2006	current	Section of US 75 Business in Le Mars
IA 19610405 !Iowa 405	0.249	0.401	Lone Tree	Iowa 22 near Lone Tree	—	2003	Spur route
IA 19610406 !Iowa 406	2.275	3.661	US 34 near West Burlington	Burlington	—	2003	Spur route
IA 19610410 !Iowa 410	2.157	3.471	Backbone State Park	Iowa 3 / Iowa 13 near Strawberry Point	—	2003	Park access road
IA 19610411 !Iowa 411	1.5	2.4	US 6 at Marengo	CR F15 north of Marengo	1957	1966	Spur route
IA0415 !Iowa 415	16.857	27.129	US 6 in Des Moines	Iowa 141 near Granger	1959	current
IA 19610417 !Iowa 417	9	14	US 67 near Riverdale	US 67 near LeClaire	1960	1969	Former section of US 67
IA 19610419 !Iowa 419	1.038	1.670	Victor	US 6 / Iowa 21 near Victor	—	2003	Spur route
IA 19610424 !Iowa 424	2.802	4.509	South of Swedesburg	US 218 near Olds	—	2003	Former section of US 218
IA 19610428 !Iowa 428	6.140	9.881	Maquoketa Caves State Park	US 61 near Maquoketa	—	2003	Park access road
IA0438 !Iowa 438	1.052	1.693	US 34 / Iowa 163 at Mount Pleasant	US 218 / Iowa 27 at Mount Pleasant	2003	current	Section of US 218 Business in Mount Pleasant
IA0461 !Iowa 461	10.750	17.300	I-280 / US 61 at Davenport	I-80 / US 61 at Davenport	2010	current	US 61 Business in Davenport
IA0471 !Iowa 471	11.160	17.960	Iowa 175 near Lake View	US 20 / US 71 near Early	2015	current	Former US 71 in Sac County
IA 19610478 !Iowa 478	0.755	1.215	Iowa 24 in New Hampton	North of New Hampton	—	2003	Former section of US 63
IA 19610904 !Iowa 904	4.737	7.623	US 34 / Iowa 163 west of Fairfield	US 34 / Iowa 163 east of Fairfield	2008	2011	US 34 Business at Fairfield, did not count mileage within Fairfield city limits
IA 19610916 !Iowa 916	1.293	2.081	Iowa 281 in Oelwein	Oelwein	—	2003	Former section of Iowa 150
IA 19610920 !Iowa 920	12.560	20.213	Center Point	Iowa 150 near Urbana	1984	2003	Former section of Iowa 150
IA0922 !Iowa 922	8.862	14.262	US 151 at Cedar Rapids	Iowa 100 in Cedar Rapids	1985	current	US 151 Business in Cedar Rapids
IA 19610925 !Iowa 925	26.259	42.260	I-80 / US 6 in Adair	US 6 near Dexter	1981	2003	Former section of US 6
IA 19610926 !Iowa 926	3.147	5.065	US 169 / US 20 Bus at Fort Dodge	US 169 at Fort Dodge	1990	2014
IA 19610927 !Iowa 927	19.017	30.605	US 6 / Iowa 38 in Wilton	I-280 / US 6 near Davenport	1981	2003	Former section of US 6
IA 19610928 !Iowa 928	20.168	32.457	Iowa 17 near Webster City	CR D20 near Williams	—	2003	Former section of US 20
IA 19610929 !Iowa 929	0.789	1.270	Murray city limits	Maple Street in Murray	1980	2003	Former section of Iowa 152
IA0930 !Iowa 930	1.738	2.797	US 30 near Ames	Boone–Story county line	1972	current	Unsigned highway
IA 19610931 !Iowa 931	8.962	14.423	I-35 in Ankeny	US 65 in Polk County	—	2003
IA0934 !Iowa 934	2.829	4.553	Cedar Falls–Waterloo city limits	US 63 in Waterloo	1998	current	Unsigned highway
IA 19610939 !Iowa 939	18.931	30.466	Iowa 187 near Masonville	Black Hawk–Buchanan county line	—	2003	Former section of US 20
IA 19610941 !Iowa 941	12.953	20.846	I-35 near Williams	Iowa Falls city limits	—	2003	Former section of US 20
IA 19610942 !Iowa 942	0.466	0.750	Vine Street in Woodburn	Woodburn city limits	—	2003	Former section of Iowa 104
IA 19610945 !Iowa 945	4.599	7.401	I-80 near Altoona	Iowa 931 in Polk County	—	2003
IA0946 !Iowa 946	0.927	1.492	US 52 / US 61 / US 151 in Dubuque	US 52 / US 61 / US 151 in Dubuque	1991	current	Provides direct access between US 20 and US 52 / US 61 / US 151
IA 19610949 !Iowa 949	2.275	3.661	Glenwood city limits	US 34 / US 275 near Glenwood	—	2003	Former US 34 Business
IA 19610952 !Iowa 952	0.112	0.180	US 151 near Cascade	Reiter Road near Cascade	—	2003	Former section of US 151
IA 19610954 !Iowa 954	0.773	1.244	US 61 near Maquoketa	Maquoketa city limits	1967	2003	Former section of US 61
IA 19610955 !Iowa 955	0.727	1.170	US 61 near Key West	Military Road in Key West	—	2003	Former section of US 61
IA 19610956 !Iowa 956	16.776	26.998	CR F55 at Davenport	US 61 north of DeWitt	—	2003	Former section of US 61
IA 19610961 !Iowa 961	3.613	5.815	Iowa 2 in Fort Madison	US 61 at Fort Madison	2011	2013	Section of US 61 Business in Fort Madison
IA 19610963 !Iowa 963	4.139	6.661	US 151 near Key West	US 61 / US 151 in Dubuque	—	2003	Former section of US 151 and US 61
IA0965 !Iowa 965	0.519	0.835	US 6 in Coralville	I-80 in Coralville	1985	current
IA 19610967 !Iowa 967	0.037	0.060	US 20 near Farley	Farley city limits	—	2003	Former section of US 20
IA 19610977 !Iowa 977	2.007	3.230	US 59 in Cherokee	Iowa 3 near Cherokee	1964	2003
IA 19610978 !Iowa 978	2.772	4.461	I-29 / US 34 near Glenwood	Iowa 385 near Pacific Junction	1974	2003	Former section of US 34
IA 19610982 !Iowa 982	27.787	44.719	Smithland city limits	Sioux City city limits	1961	2003	Former section of Iowa 141
IA 19610985 !Iowa 985	1.927	3.101	US 52 near Bellevue State Park	US 52 near Bellevue	1980	2003	Park access road
IA 19610988 !Iowa 988	2.312	3.721	I-29 / I-680 near Crescent	Iowa 183 in Crescent	1975	2003
Former

References

↑ "2012 Volume of Traffic on the Primary Road System of Iowa" (PDF). Iowa Department of Transportation. January 1, 2012. Retrieved November 6, 2013.

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