List of Iowa state highways

Highway markers from different years for Iowa 1 (1926), Iowa 3 (current), and Iowa 136 (current)
Highway names
Interstates:	Interstate nn (I-nn)
US Routes:	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.

This list is incomplete; you can help by expanding it.

Number	Length (mi)[1]	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
Iowa 1	—	—	—	—	1920	1926	Jefferson Highway through Iowa
Iowa 1	119.268	191.943	Iowa 2 south of Keosauqua	US 151 south of Anamosa	1926	current
Iowa 2	232	373	US 6 near Lewis	IL 2 at Muscatine	1920	1939	Became Iowa 92
Iowa 2	251.376	404.550	N-2 at Nebraska City, Neb.	US 61 at Fort Madison	1940	current
Iowa 3	264	425	N-2 at Nebraska City, Neb.	IL 9 at Fort Madison	1920	1941	Became Iowa 2
Iowa 3	326.163	524.908	SD 50 near Westfield	US 52 / US 61 / US 151 in Dubuque	1945	current
Iowa 4	24	39	US 59 / Iowa 141 at Denison	Iowa 175 at Odebolt	1920	1968	Became Iowa 39
Iowa 4	146.343	235.516	Iowa 44 in Panora	MN 4 near Estherville	1969	current
Iowa 5	74	119	Iowa 3 near Aurelia	US 169 at Fort Dodge	1920	1968	Became Iowa 7
Iowa 5	103.540	166.631	Route 5 south of Cincinnati	I-35 near West Des Moines	1969	current
Iowa 6	—	—	—	—	1920	1926	Lincoln Highway through Iowa
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
Iowa 7	140	225	US 6 at Council Bluffs	City US 6 in Des Moines	1920	1939	Became Iowa 64
Iowa 7	—	—	—	—	1955	1957
Iowa 7	—	—	—	—	1957	1969
Iowa 7	73.661	118.546	Iowa 3 near Aurelia	US 169 at Fort Dodge	1969	current
Iowa 8	—	—	—	—	1920	1926
Iowa 8	13.961	22.468	US 63 in Traer	US 218 near Garrison	1926	current
Iowa 9	295.088	474.898	SD 42 near Larchwood	WIS 82 at Lansing	1920	current
Iowa 10	104.512	168.196	SD 46 near Hawarden	Iowa 4 at Havelock	1920	current
Iowa 11	98	158	US 151 / Iowa 64 in Cedar Rapids	US 52 / Iowa 24 in Calmar	1920	1941	Became Iowa 150
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
Iowa 13	85.235	137.172	US 30 / US 151 near Bertram	US 52 near Froelich	1920	current
Iowa 14	187.838	302.296	Iowa 2 at Corydon	US 18 / US 218 Bus in Charles City	1920	current
Iowa 15	111	179	US 30 in Ames	Minnesota state line near Lake Mills	1920	1935	Became US 69
Iowa 15	14	23	US 63 in Ottumwa	Iowa 137 at Eddyville	1937	1968	Became Iowa 23
Iowa 15	4.655	7.491	Route 15 south of Milton	Iowa 2 at Milton	1969	2003
Iowa 15	63.578	102.319	Iowa 3 near Pocahontas	MN 15 near Armstrong	1969	current
Iowa 16	—	—	—	—	1920	1930
Iowa 16	65.488	105.393	US 34 near Agency	US 61 at Wever	1930	current
Iowa 17	—	—	—	—	1920	1969
Iowa 17	102.789	165.423	Iowa 141 at Granger	US 18 near Wesley	1969	current
Iowa 18	—	—	—	—	1920	1926
Iowa 19	—	—	—	—	1920	1926
Iowa 19	—	—	—	—	1927	1957
Iowa 20	—	—	—	—	1920	1926
Iowa 21	—	—	—	—	1920	1934
Iowa 21	97.152	156.351	Iowa 149 near Hedrick	US 20 / Iowa 27 at Waterloo	1934	current
Iowa 22	—	—	—	—	1920	1926
Iowa 22	97.905	157.563	Iowa 21 near Thornburg	US 61 at Davenport	1926	current
Iowa 23	—	—	—	—	1920	1926
Iowa 23	—	—	—	—	1926	1969
Iowa 23	14.316	23.039	US 63 in Ottumwa	Iowa 137 at Eddyville	1969	1997	Replaced by US 63 and county roads
Iowa 23	16.022	25.785	Iowa 92 at Oskaloosa	Iowa 149 near Fremont	1997	current
Iowa 24	27.546	44.331	US 18 / US 63 in New Hampton	US 52 / Iowa 150 in Calmar	1928	current
Iowa 25	103.419	166.437	Iowa 2 near Benton	US 30 near Scranton	1926	current
Iowa 26	11.370	18.298	Iowa 9 in Lansing	MN 26 at New Albin	1969	current
Iowa 27	281.689	453.335	Route 27 near Wayland, Mo.	I-35 at the Minnesota state line	2001	current	Avenue of the Saints
Iowa 28	21.613	34.783	Iowa 92 at Martensdale	I-35 / I-80 at Johnston	1926	current
Iowa 31	38.504	61.966	US 59 near Quimby	Iowa 141 near Smithland	1920	current
Iowa 32	5.101	8.209	US 20 at Dubuque	US 52 / Iowa 3 at Sageville	1995	current
Iowa 36	2.983	4.801	Wall Lake	US 71 near Wall Lake	1920	2003	Spur route
Iowa 37	40.321	64.890	Iowa 175 near Turin	US 59 near Earling	1920	current
Iowa 38	98.941	159.230	US 61 Bus / Iowa 92 in Muscatine	Iowa 3 near Edgewood	1920	current
Iowa 39	24.321	39.141	US 59 at Denison	Iowa 175 at Odebolt	1969	current
Iowa 40	3.524	5.671	Allerton	Iowa 2 near Corydon	1926	2003	Spur route
Iowa 41	1.827	2.940	Malvern	US 34 near Malvern	1920	2003	Spur route
Iowa 44	104.524	168.215	US 30 near Logan	Iowa 141 at Grimes	1969	current
Iowa 45	1.324	2.131	Manilla	Iowa 141 near Manilla	—	2003	Spur route
Iowa 48	47.919	77.118	US 59 at Shenandoah	US 6 near Lewis	1920	current
Iowa 49	27.228	43.819	Iowa 2 in Bedford	US 34 in Adams County	—	2003
Iowa 50	7.135	11.483	US 169 near Lehigh	Lehigh	—	2003	Spur route
Iowa 51	11.007	17.714	US 18 / US 52 at Postville	Iowa 9 near Waukon	1920	current
Iowa 55	4.506	7.252	Seymour	Iowa 2 near Promise City	—	2003	Spur route
Iowa 56	24.432	39.319	Iowa 150 at West Union	Iowa 13 at Elkader	1920	current
Iowa 57	43.765	70.433	US 65 near Iowa Falls	US 218 / Iowa 27 / Iowa 58 at Cedar Falls	1986	current
Iowa 58	12.030	19.360	US 63 at Hudson	US 218 / Iowa 27 / Iowa 57 at Cedar Falls	1920	current
Iowa 60	58.771	94.583	US 75 at Le Mars	MN 60 at Bigelow, Minn.	1969	current
Iowa 62	19.633	31.596	Iowa 64 at Maquoketa	US 52 in Bellevue	1920	current
Iowa 64	64.355	103.569	US 151 at Anamosa	US 52 / IL 64 at Savanna, Ill.	1936	current
Iowa 66	7.011	11.283	Iowa 2 near Diagonal	Diagonal	—	2003	Spur route
Iowa 68	1.933	3.111	Melrose	US 34 near Melrose	—	2003	Spur route
Iowa 70	23.954	38.550	Iowa 92 at Columbus Junction	US 6 in West Liberty	1969	current
Iowa 76	48.911	78.715	US 18 near McGregor	MN 76 near Eitzen, Minn.	1969	current
Iowa 77	2.685	4.321	Iowa 92 near Keota	Keota	—	2003	Spur route
Iowa 78	58.429	94.032	Iowa 149 near Martinsburg	US 61 near Morning Sun	1920	current
Iowa 79	5.637	9.072	Geode State Park	US 34 in Middletown	—	2003	Park access road
Iowa 81	2.215	3.565	Route 81 near Farmington	Iowa 2 near Farmington	1969	current
Iowa 82	3.773	6.072	Blairstown	US 30 near Blairstown	—	2003	Spur route
Iowa 83	34.191	55.025	US 59 in Avoca	Iowa 148 in Anita	1920	current
Iowa 85	8.408	13.531	Montezuma city limits	Iowa 21 near Deep River	1920	current
Iowa 86	12.519	20.147	US 71 near Milford	MN 86 near Spirit Lake	1981	current
Iowa 91	4.643	7.472	Iowa 9 in Lyon County	MN 91 at the Minnesota state line	—	2003
Iowa 92	274.231	441.332	US 275 / N-92 in Council Bluffs	IL 92 at Muscatine	1939	current
Iowa 93	29.534	47.530	US 63 near Tripoli	Iowa 150 in Fayette	1920	current
Iowa 94	11.168	17.973	US 151 Business in Cedar Rapids	Palo	—	2003	Spur route
Iowa 96	16.635	26.771	Iowa 14 near Gladbrook	US 63 near Gladbrook	1920	current
Iowa 97	1.532	2.466	Russell	Russell	—	2003	Spur route
Iowa 98	1.814	2.919	Leando	Iowa 16 near Douds	1944	current	Spur route
Iowa 99	33.232	53.482	US 34 in Burlington	US 61 in Wapello	—	2003
Iowa 100	8.285	13.333	Edgewood Road in Cedar Rapids	US 151 / Iowa 13 near Marion	1984	current
Iowa 102	0.501	0.806	New Sharon city limits	US 63 / Iowa 146 in New Sharon	1980	current	Unsigned highway
Iowa 103	15.649	25.185	US 218 near Donnellson	US 61 / Iowa 2 in Fort Madison	—	2003
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
Iowa 109	1.268	2.041	Oxford	US 6 near Oxford	—	2003	Spur route
Iowa 110	14.789	23.801	US 20 at Schaller	Iowa 7 at Storm Lake	1934	current
Iowa 113	1.187	1.910	Iowa 64 near Spragueville	Spragueville	—	2003	Spur route
Iowa 115	1.237	1.991	US 34 near Stanton	Viking Lake State Park	—	2003	Park access road
Iowa 116	2.776	4.468	US 218 near Waverly	Iowa 3 in Waverly	1998	current	Section of US 218 Business in Waverly
Iowa 117	18.562	29.873	Iowa 163 at Prairie City	US 65 / Iowa 330 near Mingo	1936	current
Iowa 122	12.264	19.737	I-35 / US 18 at Clear Lake	Mason City city limits	1999	current
Iowa 124	2.567	4.131	Iowa 4 in Calhoun County	Twin Lakes State Park	—	2003	Park access road
Iowa 127	15.985	25.725	I-29 near Mondamin	US 30 in Logan	1924	current
Iowa 128	6.982	11.236	Iowa 13 near Elkader	US 52 near Garnavillo	1924	current
Iowa 130	32.023	51.536	Iowa 38 in Tipton	I-80 / US 61 at Davenport	1969	current
Iowa 131	4.520	7.274	Iowa 21 in Belle Plaine	US 30 near Belle Plaine	—	2003	Part of the Lincoln Highway
Iowa 133	0.970	1.561	US 30 in Nevada	Nevada	—	2003	Spur route
Iowa 136	97.733	157.286	IL 136 at Clinton	US 52 / Iowa 3 at Luxemburg	1926	current
Iowa 137	14.526	23.377	Iowa 5 at Albia	US 63 / Iowa 163 at Eddyville	1934	current
Iowa 139	11.431	18.396	Iowa 9 near Cresco	MN 139 near Harmony, Minn	1930	current
Iowa 140	25.309	40.731	US 20 at Moville	Iowa 3 at Remsen	1926	current
Iowa 141	155.362	250.031	I-29 near Sloan	I-35 / I-80 at Grimes	1926	current
Iowa 142	20.901	33.637	Iowa 2 in Plano	Iowa 5 near Moravia	—	2003
Iowa 143	12.049	19.391	Iowa 3 at Marcus	Iowa 10 at Granville	1926	current
Iowa 144	34.039	54.780	Iowa 141 at Perry	Iowa 175 near Harcourt	1926	current
Iowa 145	7.408	11.922	I-29 near Thurman	US 275 near Sidney	—	2003
Iowa 146	42.735	68.775	US 63 / Iowa 102 in New Sharon	US 30 in Le Grand	1926	current
Iowa 147	6.706	10.792	Rockford	Iowa 14 in Floyd County	—	2003	Spur route
Iowa 148	66.828	107.549	Route 148 near Bedford	I-80 / US 6 near Anita	1926	current
Iowa 149	65.897	106.051	US 34 in Ottumwa	I-80 near Williamsburg	1926	current
Iowa 150	85.093	136.944	US 218 at Vinton	US 52 / Iowa 24 at Calmar	1941	current
Iowa 152	1.402	2.256	I-35 near Osceola	US 69 at Osceola	1980	2014
Iowa 156	4.748	7.641	Iowa 5 near Marysville	Bussey	—	2003	Spur route
Iowa 157	1.032	1.661	US 63 near Lime Springs	Lime Springs	—	2003	Spur route
Iowa 160	2.446	3.936	Iowa 415 at Ankeny	I-35 at Ankeny	1947	current
Iowa 161	1.224	1.970	Iowa 141 at Dedham	Iowa 141 near Dedham	—	2003
Iowa 163	166.270	267.586	US 69 in Des Moines	US 34 at Burlington	1937	current
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
Iowa 173	14.680	23.625	Iowa 83 near Atlantic	Iowa 44 at Kimballton	1930	current
Iowa 175	221.367	356.256	N-51 at Decatur, Neb	US 63 near Hudson	1930	current
Iowa 181	9.596	15.443	Iowa 5 / Iowa 92 near Pleasantville	Melcher-Dallas	—	2003	Spur route
Iowa 182	9.051	14.566	US 18 in Inwood	Iowa 9 near Larchwood	1969	current
Iowa 183	29.952	48.203	Iowa 127 near Mondamin	Iowa 141 in Ute	1930	current
Iowa 187	28.385	45.681	US 20 near Masonville	Iowa 150 near Fayette	1931	current
Iowa 188	24.231	38.996	Iowa 3 near Clarksville	US 63 near Tripoli	1945	current
Iowa 191	22.790	36.677	I-680 near Neola	Iowa 37 at Earling	1930	current
Iowa 192	6.647	10.697	I-29 / I-80 at Council Bluffs	I-29 at Council Bluffs	1980	current
Iowa 193	10.852	17.465	US 18 in Fayette County	Iowa 24 in Jackson Junction	—	2003
Iowa 195	2.896	4.661	Iowa 4 near Plover	Plover	—	2003	Spur route
Iowa 196	10.136	16.312	US 71 / Iowa 175 near Lake View	US 20 near Sac City	1935	2015
Iowa 197	2.567	4.131	Iowa 3 near Albert City	Albert City	—	2003	Spur route
Iowa 198	2.231	3.590	Garrison	US 218 near Garrison	—	2003	Spur route
Iowa 199	2.666	4.291	Van Horne	US 218 near Van Horne	—	2003	Spur route
Iowa 200	2.163	3.481	US 30 near Keystone	Keystone	—	2003	Spur route
Iowa 201	4.755	7.652	Norway	US 30 / US 218 near Atkins	—	2003	Spur route
Iowa 202	10.461	16.835	Route 202 at Coatsville, Mo	Iowa 2 near Moulton	1969	current
Iowa 204	5.407	8.702	Iowa 2 near Garden Grove	Garden Grove	—	2003	Spur route
Iowa 205	2.927	4.711	US 65 near Milo	Milo	—	2003	Spur route
Iowa 206	6.221	10.012	US 65 near Liberty Center	Liberty Center	—	2003	Spur route
Iowa 207	3.058	4.921	I-35 near New Virginia	New Virginia	—	2003	Spur route
Iowa 209	0.5	0.8	Iowa 149 near Conroy	Conroy	1931	1975	Spur route
Iowa 210	34.781	55.975	Iowa 141 near Woodward	US 65 near Collins	1938	current
Iowa 212	12.157	19.565	Iowa 21 near Belle Plaine	US 6 at Marengo	1934	current
Iowa 214	5.736	9.231	Iowa 175 near Ivester	Wellsburg	—	2003	Spur route
Iowa 215	8.738	14.062	Union	Iowa 175 in Eldora	—	2003	Spur route
Iowa 220	7.233	11.640	US 6 at South Amana	US 151 at Amana	1930	current
Iowa 221	3.909	6.291	I-35 near Story City	Roland	—	2003	Spur route
Iowa 224	10.587	17.038	US 6 near Kellogg	Iowa 14 near Laurel	1930	current
Iowa 225	7.688	12.373	Sully	Iowa 146 in Searsboro	—	2003	Spur route
Iowa 229	5.233	8.422	Garwin	US 63 in Tama County	—	2003	Spur route
Iowa 231	4.068	6.547	US 34 west of New London	US 34 east of New London	—	2003	Former section of US 34
Iowa 238	1.063	1.711	Iowa 9 near Harris	Harris	—	2003	Spur route
Iowa 239	0.510	0.821	Waubonsie State Park	Iowa 2 in Fremont County	—	2003	Park access road
Iowa 240	6.389	10.282	Royal	US 71 in Clay County	—	2003	Spur route
Iowa 242	5.855	9.423	US 34 in Mills County	Silver City	—	2003	Spur route
Iowa 243	0.559	0.900	Black Hawk Lake State Park	US 71 / Iowa 175 near Wall Lake	—	2003	Park access road
Iowa 244	0.771	1.241	I-80 near Neola	Iowa 191 in Neola	—	2003
Iowa 249	0.665	1.070	Iowa 78 near Winfield	Winfield	—	2003	Spur route
Iowa 252	0.584	0.940	US 61 / Iowa 92 near Grandview	Grandview	—	2003	Spur route
Iowa 253	0.932	1.500	Iowa 14 near Williamson	Williamson	—	2003	Spur route
Iowa 258	1.989	3.201	I-35 near Van Wert	US 69 near Van Wert	—	2003
Iowa 259	1.001	1.611	US 169 near Tingley	Tingley	—	2003	Spur route
Iowa 263	12.511	20.135	Iowa 14 in Grundy County	US 20 near Cedar Falls	—	2003	Former section of US 20
Iowa 266	1.709	2.750	US 69 near Weldon	Weldon	—	2003	Spur route
Iowa 273	10.025	16.134	Lake Wapello State Park	US 63 near Draksevill	—	2003	Park access road
Iowa 276	4.711	7.582	Spirit Lake city limits	Minnesota state line	—	2003	Park access road
Iowa 279	1.983	3.191	US 30 / US 218 near Atkins	Atkins	—	2003	Spur route
Iowa 281	28.166	45.329	Waterloo city limits	Iowa 150 at Oelwein	1936	current
Iowa 282	5.283	8.502	Quasqueton	Iowa 939 near Winthrop	—	2003	Spur route
Iowa 285	0.796	1.281	US 30 in Arcadia	Arcadia	—	2003	Spur route
Iowa 286	9.932	15.984	US 30 in Glidden	Lanesboro	—	2003	Spur route
Iowa 287	1.833	2.950	US 30 / US 218 near Newhall	Newhall	—	2003	Spur route
Iowa 294	6.147	9.893	Iowa 2 in Decatur County	Grand River	—	2003	Spur route
Iowa 297	3.543	5.702	Gilbertville	Raymond	—	2003	Double spur with I-380
Iowa 299	5.556	8.942	New Providence	Iowa 175 near Eldora	—	2003	Spur route
Iowa 300	1.411	2.271	Modale	I-29 near Modale	—	2003	Spur route
Iowa 301	2.045	3.291	I-29 near Little Sioux	Little Sioux	—	2003	Spur route
Iowa 305	2.554	4.110	Letts	US 61 / Iowa 92 near Letts	—	2003	Spur route
Iowa 306	0.783	1.260	US 65 near Derby	Derby	—	2003	Spur route
Iowa 314	6.277	10.102	Ayrshire	US 18 near Ruthven	—	2003	Spur route
Iowa 315	4.158	6.692	Iowa 4 near Palmer	Palmer	—	2003	Spur route
Iowa 316	5.183	8.341	Iowa 5 near Swan	Runnells city limits	1935	current	Spur route
Iowa 322	2.660	4.281	Pammel State Park	Iowa 92 in Madison County	—	2003	Park access road
Iowa 324	0.510	0.821	Iowa 175 near Onawa	Lewis and Clark State Park	—	2003	Park access road
Iowa 325	3.617	5.821	Spillville	US 52 near Calmar	—	2003	Spur route
Iowa 327	2.070	3.331	Iowa 276 in Spirit Lake	Near Orleans	—	2003	Spur route
Iowa 330	47.748	76.843	I-80 / US 6 / US 65 at Altoona	Iowa 14 near Albion	1969	current
Iowa 331	1.5	2.4	Eldridge	US 61 near Eldridge	1935	1967	Spur route
Iowa 333	1.558	2.507	I-29 at Hamburg	US 275 in Hamburg	1935	current
Iowa 340	2.231	3.590	Pikes Peak State Park	Iowa 76 in McGregor	—	2003	Park access road
Iowa 346	12.470	20.069	US 218 / Iowa 27 at Nashua	US 18 / US 63 near New Hampton	1937	current
Iowa 347	0.8	1.3	Locust Street at Omaha, Neb.	Locust Street at Omaha, Neb.	1937	1986
Iowa 349	1.032	1.661	Lake Ahquabi State Park	US 65 / US 69 near Indianola	—	2003	Park access road
Iowa 356	0.949	1.527	Milford	West Okoboji	—	2003	Former section of US 71
Iowa 359	7.383	11.882	Buckeye	Iowa 941 in Alden	—	2003	Spur route
Iowa 362	5.469	8.802	DeSoto National Wildlife Refuge	I-29 at Loveland	—	2003	Park access road
Iowa 363	1.616	2.601	Iowa 150 near Urbana	I-380 / Iowa 27 in Urbana	—	2003
Iowa 364	6.140	9.881	Iowa 76 near Waukon Junction	Harpers Ferry	—	2003	Spur route
Iowa 370	3.265	5.255	N-370 at Bellevue, Neb.	I-29 / US 275 near Council Bluffs	1953	2014
Iowa 371	0.715	1.151	Lake Keomah State Park	Iowa 92 near Keomah Village	—	2003	Park access road
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
Iowa 382	4.792	7.712	Lake MacBride State Park	Iowa 1 in Solon	—	2003	Park access road
Iowa 383	1.311	2.110	US 69 near Randall	Randall	—	2003	Spur route
Iowa 384	1.231	1.981	Iowa 25 in Guthrie County	Springbrook State Park	—	2003	Park access road
Iowa 385	3.151	5.071	Pacific Junction	US 34 / US 275 in Glenwood	—	2003	Spur route
Iowa 386	2.685	4.321	US 52 / Iowa 3 near Sageville	US 52 / Iowa 3 / Iowa 32 near Dubuque	—	2003
Iowa 387	1	2	Davenport Municipal Airport	US 61 3 miles north of Davenport	1953	1978	Spur route
Iowa 390	2.113	3.401	South of Plainfield	North of Plainfield	—	2003	Former section of US 218
Iowa 403	0.477	0.768	SD 48 near Akron	Iowa 12 in Akron	—	2003
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
Iowa 405	0.249	0.401	Lone Tree	Iowa 22 near Lone Tree	—	2003	Spur route
Iowa 406	2.275	3.661	US 34 near West Burlington	Burlington	—	2003	Spur route
Iowa 410	2.157	3.471	Backbone State Park	Iowa 3 / Iowa 13 near Strawberry Point	—	2003	Park access road
Iowa 411	1.5	2.4	US 6 at Marengo	CR F15 north of Marengo	1957	1966	Spur route
Iowa 415	16.857	27.129	US 6 in Des Moines	Iowa 141 near Granger	1959	current
Iowa 417	9	14	US 67 near Riverdale	US 67 near LeClaire	1960	1969	Former section of US 67
Iowa 419	1.038	1.670	Victor	US 6 / Iowa 21 near Victor	—	2003	Spur route
Iowa 424	2.802	4.509	South of Swedesburg	US 218 near Olds	—	2003	Former section of US 218
Iowa 428	6.140	9.881	Maquoketa Caves State Park	US 61 near Maquoketa	—	2003	Park access road
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
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
Iowa 471	21.080	33.925	US 71 / Iowa 175 near Lake View	US 20 / US 71 near Early	2015	current	Former US 71 in Sac County
Iowa 478	0.755	1.215	Iowa 24 in New Hampton	North of New Hampton	—	2003	Former section of US 63
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
Iowa 916	1.293	2.081	Iowa 281 in Oelwein	Oelwein	—	2003	Former section of Iowa 150
Iowa 920	12.560	20.213	Center Point	Iowa 150 near Urbana	—	2003	Former section of Iowa 150
Iowa 922	8.862	14.262	US 151 at Cedar Rapids	Iowa 100 in Cedar Rapids	1985	current	US 151 Business in Cedar Rapids
Iowa 925	24.345	39.179	I-80 / US 6 in Adair	US 6 near Dexter	—	2003	Former section of US 6
Iowa 926	3.147	5.065	US 169 / US 20 Bus at Fort Dodge	US 169 at Fort Dodge	1990	2014
Iowa 927	19.017	30.605	US 6 / Iowa 38 in Wilton	I-280 / US 6 near Davenport	—	2003	Former section of US 6
Iowa 928	20.168	32.457	Iowa 17 near Webster City	CR D20 near Williams	—	2003	Former section of US 20
Iowa 929	0.789	1.270	Murray city limits	Maple Street in Murray	—	2003	Former section of Iowa 152
Iowa 930	1.738	2.797	US 30 near Ames	Boone–Story county line	1972	current	Unsigned highway
Iowa 931	8.962	14.423	I-35 in Ankeny	US 65 in Polk County	—	2003
Iowa 934	2.829	4.553	Cedar Falls–Waterloo city limits	US 63 in Waterloo	1998	current	Unsigned highway
Iowa 939	18.931	30.466	Iowa 187 near Masonville	Black Hawk–Buchanan county line	—	2003	Former section of US 20
Iowa 941	12.953	20.846	I-35 near Williams	Iowa Falls city limits	—	2003	Former section of US 20
Iowa 942	0.466	0.750	Vine Street in Woodburn	Woodburn city limits	—	2003	Former section of Iowa 104
Iowa 945	4.599	7.401	I-80 near Altoona	Iowa 931 in Polk County	—	2003
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
Iowa 949	2.275	3.661	Glenwood city limits	US 34 / US 275 near Glenwood	—	2003	Former US 34 Business
Iowa 952	0.112	0.180	US 151 near Cascade	Reiter Road near Cascade	—	2003	Former section of US 151
Iowa 954	0.773	1.244	US 61 near Maquoketa	Maquoketa city limits	—	2003	Former section of US 61
Iowa 955	0.727	1.170	US 61 near Key West	Military Road in Key West	—	2003	Former section of US 61
Iowa 956	16.776	26.998	CR F55 at Davenport	US 61 north of DeWitt	—	2003	Former section of US 61
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
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
Iowa 965	0.519	0.835	US 6 in Coralville	I-80 in Coralville	1985	current
Iowa 967	0.037	0.060	US 20 near Farley	Farley city limits	—	2003	Former section of US 20
Iowa 977	2.007	3.230	US 59 in Cherokee	Iowa 3 near Cherokee	—	2003
Iowa 978	2.772	4.461	I-29 / US 34 near Glenwood	Iowa 385 near Pacific Junction	—	2003	Former section of US 34
Iowa 982	27.787	44.719	Smithland city limits	Sioux City city limits	—	2003	Former section of Iowa 141
Iowa 985	1.927	3.101	US 52 near Bellevue State Park	US 52 near Bellevue	—	2003	Park access road
Iowa 988	2.312	3.721	I-29 / I-680 near Crescent	Iowa 183 in Crescent	—	2003
Former

References

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