267:
554:
744:
593:(15 ¢/L), adjusted for inflation) was created in 1925, with one-third of revenues going into the Primary Road Fund and the other two-thirds going towards county and township roads. In 1927, in order to align the public road system with the tax revenues coming in, Iowa's public roads were divided into primary and secondary roads, with primary roads under the state's jurisdiction and secondary roads under county jurisdiction. This division remains today.
278:, volunteered to sponsor and register certain roads with the highway commission. Each organization chose their colors and designed route markers to guide motorists along the way. Eventually, confusion reigned and the highway commission took action. Beginning in 1920, primary road numbers were assigned to registered routes. Route numbers were assigned so they would match those of neighboring states – Primary Road Number 1 (No. 1) was assigned to the
439:
696:
713:
689:
320:
33:
777:, secondary roads use a uniform numbering grid using one letter and two or three numbers, e.g., E41. County roads running primarily east and west assigned letters (from north to south) A through J. County roads running primarily north and south are assigned letters (from west to east) K through Z. The letters I, O, Q and U are not used to avoid confusion with numbers and other letters.
644:
45:
682:
637:
2899:
801:
789:
23:
770:, which connect principal traffic generating areas to primary roads or to other farm-to-market roads, are maintained by the route's respective county and are paid for by a special fund. The Farm-to-Market Road Fund consists of federal secondary road aid and 8% of Iowa's road use taxes. The farm-to-market road system is limited to 35,000 miles (56,000 km).
670:
663:
28:
656:
728:
MUTCD Series D, two-digit routes use MUTCD Series C, and three-digit routes use MUTCD Series B. Additional room for numbers on three-digit routes can be created by using 10-inch (300 mm) numbers. In 2014, Iowa DOT began to use wider, 30-by-24-inch (750 mm × 600 mm) signs on three-digit-numbered highways.
731:
Interstate
Highways in Iowa are signed with, compared to current MUTCD standards, an older style blue and red shield which features smaller numbers, wider striping, and the state's name on every shield. When in use in the field, two-digit shields are 36 by 36 inches (900 mm × 900 mm),
727:
U.S. and Iowa highways are marked with a 24-by-24-inch (600 mm × 600 mm), or rarely, a 36-by-36-inch (900 mm × 900 mm) black sign with a white shield or white circle, respectively. To make room for additional digits, fonts are adjusted accordingly: One-digit routes use
209:
Early on, Iowa's registered routes were marked with hand-painted signs created by the group maintaining the highways. When the primary highway system was created, prisoners in Iowa's correctional system began making highway signs. Today, Iowa's highway markers are compliant with standards set forth
488:
In 2002, the Road Use Tax Fund
Committee (RUTF), a mix of city, county, and state transportation officials, met to review and recommend changes to Iowa's public road system. The report was necessitated by increasing costs to maintain the highway system and a level of funding that was not keeping up
596:
Iowa's highways are funded today through a number of sources which are distributed into the Iowa Road Use Fund. Gasoline, regular and ethanol-blend, and diesel fuel is taxed in the range of 19 to 22.5 ¢/US gal (5.0 to 5.9 ¢/L), while vehicle purchases and rentals are taxed at a rate
434:
passed a resolution creating the Iowa
Highway Study Committee, consisting of senators, congressmen, and representatives from the Iowa League of Municipalities, county engineers, and the Iowa State Highway Commission. The study committee hired two consulting firms to find the physical and financial
528:
Iowa has over 800 miles (1,300 km) of
Interstate highways, over 3,800 miles (6,100 km) of U.S. Highways, and over 5,100 miles (8,200 km) of state highways, many of which overlap. Today, the primary highway system represents over 8% of the total 114,000-mile (183,000 km) public
524:
Typically, when the Iowa
Department of Transportation transfers a highway to a county or local jurisdiction, the DOT must ensure the highway is in good condition or provide the county compensation to repair the highway. Senate File 451, codified as Iowa Code §306.8A, instead created a fund for the
537:
While the Iowa
Highway Commission was growing, the Iowa legislature allowed organizations to sponsor and register certain roads. Sponsors brought in much needed funds to maintain the roadways. Road sponsors were allowed to choose the colors of their road markers and slogans for road signs. The
327:
In the late 1920s and early 1930s, highway paving had begun in earnest. In
September 1929 alone, the Iowa State Highway Commission spent $ 3 million ($ 53.2 million, adjusted for inflation) on road construction, with two-thirds of that spent on highway paving. By the end of 1929, the first
592:
In 1919, the Iowa legislature created the
Primary Road Fund, which provided funding for new road projects. In addition to the Primary Road Fund, counties were allowed to issue bonds to expedite the improvement of roads. A 2-cent-per-US-gallon (0.53 ¢/L) gasoline tax (56 ¢/US gal
188:
The 20th century was a transformative time for vehicular transportation. In the early years of the century, roads were problematic at best – dusty dirt roads when dry and impassably muddy when wet. Over time, federal money was set aside and bonds were issued allowing the roads to be
197:
connected Iowa to the rest of the country and made national travel feasible. Periodically, new highway construction and changing driving habits have resulted in the obsolescence of local highways, to which the primary highway system has adapted. The former primary highways, turned over to
597:
of 5 percent. Today, the Road Use Tax Fund is distributed into funds based on classifications – 47.5% is distributed into the
Primary Road Fund, 32.5% is distributed to counties through the Secondary and Farm-to-Market Road Funds, and 20% is distributed into the City Street Fund.
435:
needs of the primary highway system for the next twenty years. The study committee itself held frequent meetings across the state to gather public opinions on the state of the highway system. In its final report to the 59th
General Assembly, the study committee recommended:
249:
in Ames to handle issues that arose concerning travel and safety. In 1904, less than 2 percent, or just over 1,000 miles (1,600 km) of public roads in Iowa had been improved with gravel or broken stone. The first task of the Iowa State Highway Commission, now the
418:, opened on September 21, 1958. Over the next 30 years, sections of interstate were completed and opened for traffic. As the interstates grew and expanded, many U.S. Highways were truncated at, relocated onto, or replaced by interstates. The last section of
525:
maintenance of newly transferred highways. Until 2013, 1.75% of the primary highway fund will be directed to this fund to compensate counties receiving highways. Over $ 1.1 million has been allocated to counties for the August 2009 – July 2010 period.
568:
set aside $ 75 million over 5 years ($ 2.1 billion, adjusted for inflation) of which $ 146,000 per year ($ 4.09 million, adjusted for inflation) was earmarked for Iowa. The first section of hard roads build with federal money was a section between
472:
The study committee urged caution on immediately adopting their report, instead recommending to adopt the findings over time. As a result, in 1980, a large number of local service primary highways were turned over to counties and local jurisdictions.
1056:
Nolan, Sen. D.C.; Hagedorn, Rep. Merle; Hoffman, Sen. Gene L.; McCurdy, Sen. Carroll F.; Eldred, Rep. Russell; Pierce, Rep. Neal; Sutera, Miles P.; Iles, Charles F.; Robinson, Kenneth; Dougherty, James R.; Teachout, Harold J. (1961).
258:
E. Ward King, road drags were a cost-effective way to smooth out dirt roads, costing as much as $ 3.00 ($ 102.00, adjusted for inflation) to build. In 1913, the Commission separated from Iowa State College and gained control over
732:
while three-digit shields are 42-by-36-inch (1,100 mm × 900 mm), and 24 by 24 inches (600 mm × 600 mm) and 30 by 25 inches (750 mm × 625 mm), respectively, on intersecting roads.
254:, was to study Iowa's problematic roads. At the time, roads were merely dusty dirt trails when dry, and quagmires of mud when wet. By 1906, every county was maintaining its dirt road with drags. Designed by
550:
largely follow the River-to-River Route today. The most famous registered route was the Lincoln Highway. At the peak of the registered route system, there were over 100 registered routes in Iowa.
316:
some primary roads in 1926; marking them with a unique number as to not duplicate the new U.S. Highways. Iowa highways were signed with a circle with the route's number beneath the word Iowa.
49:
The state of Iowa is served by over 10,000 miles (16,000 km) of primary roads. The roads are spaced out evenly across the state, with clusters of primary roads near population centers.
1899:
263:
and local transportation officials, who were responsible for road construction and maintenance. The Iowa Highway Commission did not gain jurisdiction over public roads until 1924.
2082:
2028:
2033:
305:
1573:
1909:
458:
Classifying the primary highway system into two groups – 1,928 miles (3,103 km) of freeways and 6,472 miles (10,416 km) of other primary roads.
2243:
581:. Soon after, a massive road-paving drive began to solve Iowa's "road problem" by getting Iowa out of the mud. This created much needed jobs during the
1504:
1164:
897:
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
382:, plans for the toll road were scrapped with great fervor. In Iowa, interstate corridors were designed to follow existing U.S. Highway corridors –
467:
Distributing 55% of the road use tax fund for use on primary roads, 30% to the counties for secondary roads, and 15% to municipalities for local roads.
2263:
722:
211:
2038:
1889:
1138:
1728:
1823:
1788:
1582:
773:
Unlike some other states in the United States, Iowa's signed secondary roads are not numbered on a county-by-county basis. With exception to
430:
In 1959, the nascent Interstate Highway System was growing while the existing primary highway system was beginning to show its age. The 58th
1603:
83:
1202:
1058:
1863:
932:
1178:
1818:
1733:
1708:
1653:
510:
introduced a bill, Senate File 451, which would allow the mass transfer. The bill was passed by the Senate and House and was signed by
119:
1884:
1858:
1798:
1723:
1648:
1566:
1224:
455:
Transferring 1,902 miles (3,061 km) of local service highways to local jurisdictions or a separate division of primary highways.
270:
A concrete Lincoln Highway route marker as seen at the Smithsonian National Museum. Few of these markers still exist along the route.
1868:
1843:
1773:
1443:
1411:
1257:
1006:
838:
251:
162:
2018:
1334:
917:
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
2160:
2133:
1738:
1698:
1673:
2923:
1813:
1808:
1678:
1668:
1633:
1623:
375:
299:
190:
2126:
2089:
1942:
1838:
1758:
129:
370:
In the 1950s, the Iowa State Highway Commission planned an east-west toll road across the state, roughly along the current
2099:
1783:
1778:
1753:
1743:
1703:
1683:
1559:
1385:
477:
313:
242:
124:
2208:
1853:
1828:
1768:
1763:
1688:
1663:
1643:
924:
904:
565:
1658:
275:
735:
All county routes are signed with the MUTCD-standard blue pentagonal shield, however some older signs still remain.
2779:
2180:
2165:
1848:
1833:
1713:
988:
521:
and segments bypassed after new construction, were turned over to county or municipal governments on July 1, 2003.
139:
2143:
2067:
1793:
1598:
1116:
379:
365:
194:
73:
2474:
2444:
2386:
2170:
2148:
2121:
1993:
1894:
1803:
266:
260:
199:
308:
approved a national numbering system for roads, which quickly replaced the registered route system. The new
2869:
2849:
2769:
2744:
2734:
2534:
2424:
2116:
1988:
1718:
1638:
766:
The 99 counties in Iowa divide the secondary road system into farm-to-market roads and area service roads.
431:
274:
The predecessor of the primary highway system was the registered route system. Organizations, such as the
2928:
2864:
2834:
2784:
2759:
2739:
2644:
2539:
2484:
2409:
2404:
2008:
1748:
774:
419:
309:
1142:
2874:
2789:
2764:
2719:
2709:
2619:
2604:
2589:
2564:
2529:
2509:
2479:
2439:
2376:
2213:
2138:
2094:
1628:
1090:
Reeder, Greg; Stevens, Larry; Fichtner, Royce; Stoner, Tom; Wandro, Mark; Volmer, Neil (April 1, 2003).
578:
415:
411:
407:
383:
345:
178:
1447:
1415:
743:
2859:
2839:
2749:
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2634:
2594:
2584:
2569:
2554:
2544:
2524:
2504:
2499:
2459:
2454:
2414:
2306:
1904:
547:
543:
371:
134:
553:
2884:
2844:
2824:
2804:
2729:
2724:
2704:
2679:
2659:
2639:
2614:
2599:
2579:
2574:
2514:
2489:
2449:
2434:
2419:
2203:
2111:
2057:
1983:
767:
748:
498:
228:
203:
2879:
2854:
2829:
2814:
2809:
2799:
2714:
2684:
2654:
2609:
2559:
2549:
2519:
2469:
2429:
2399:
2394:
2341:
2296:
2175:
2003:
1998:
1935:
353:
246:
1091:
464:
Classifying municipal roads not in the primary highway system into arterials and access streets.
915:
895:
165:
is responsible for the day-to-day maintenance of the primary highway system, which consists of
2819:
2774:
2754:
2689:
2674:
2629:
2494:
2464:
2291:
2195:
2185:
2045:
861:
834:
805:
279:
2794:
2669:
2624:
2361:
2346:
2326:
2316:
2286:
2281:
2233:
2223:
2072:
1965:
911:
891:
582:
574:
570:
511:
349:
1228:
2366:
2351:
2331:
2311:
2077:
1975:
539:
494:
Transferring 712 miles (1,146 km) of primary highways to county and city governments.
438:
283:
234:
1551:
1013:
312:
system grew and improved for thirty years, until Interstate highways were created. Iowa
1250:
348:. These two new roads also made travel easier between Iowa's two most populous cities,
2371:
2218:
391:
287:
182:
2917:
2356:
2321:
2301:
2050:
2023:
1928:
1613:
399:
395:
387:
333:
93:
2336:
2276:
2155:
2062:
2013:
752:
586:
403:
341:
32:
1308:
1476:
2903:
2248:
2238:
2104:
793:
518:
514:
507:
328:
roads connecting two state borders neared completion. The Lincoln Highway from
238:
1389:
517:
on May 23, 2003. Over 600 miles (970 km) of state highways, mostly short
241:. As more Iowans purchased automobiles, the Iowa legislature set up in 1904 a
2271:
1951:
558:
449:
448:
Limiting the primary highway system to 8,400 miles (13,500 km) including
442:
U.S. Route 34 near Chariton, a typical rural Iowa scene along Iowa's highways.
329:
154:
2253:
2228:
1279:
759:
153:
makes up over 9,000 miles (14,000 km), approximately 8 percent of the
44:
1059:"Report of the Iowa Highway Study Committee"
747:
Typical signage used on a county highway in Iowa, as seen along CR W66 in
489:
with the rising costs. The RUTF committee had two major recommendations:
461:
Reclassifying county roads into trunk, feeder, and local secondary roads.
255:
1179:"Street Construction / Transfer of Jurisdiction (August 2009–July 2010)"
337:
319:
1361:
22:
1012:. Iowa Department of Transportation. January 1, 1982. Archived from
233:
At the turn of the 20th century, roads in Iowa were suited for
742:
552:
437:
318:
265:
406:. The first section of interstate highway in Iowa, a section of
1955:
1920:
953:"Iowa Spends Three Million on Highway Paving During September".
158:
27:
1924:
1555:
1092:"Evaluation of the State Highway System and Road Use Tax Fund"
1546:
1040:
The National System of Interstate Defense Highways 1956–1996
538:
first registered route, the River-to-River Route, connected
1518:
480:, largely creating the numbered routes which remain today.
501:
extensions in cities under 500 population to the counties.
1541:
1416:"Type 'A' U.S. and State Route Markers (Independent Use)"
1251:
2009 Volume of Traffic on the Primary Road System of Iowa
63:
Primary highways in Iowa are generally state-maintained.
1335:"Federal Aid Road Act of 1916:Building the Foundation"
1286:. Iowa Department of Transportation. November 21, 2007
1284:
About the DOT — Iowa Department of Transportation
968:"Paved Highway to Extend Across Iowa by End of Year".
1448:"Type 'A' Interstate Route Markers (Independent Use)"
1362:"Discovering historic Iowa transportation milestones"
181:
at 332 miles (534 km). The shortest highway is
2385:
2262:
2194:
1974:
1877:
1612:
1591:
1360:Iowa Department of Transportation (February 1999).
422:to be completed, was opened on September 12, 1985.
102:
92:
82:
72:
67:
59:
54:
1499:
1497:
986:Boshart, Rod (June 16, 1996). "Ribbons of Roads".
476:On January 1, 1969, many highways in Iowa were
306:American Association of State Highway Officials
1386:"Iowa Department of Revenue — Iowa Taxes"
885:
883:
202:and local jurisdictions, county highways, and
1936:
1567:
1051:
1049:
177:. Currently, the longest primary highway is
8:
1388:. Iowa Department of Revenue. Archived from
831:Transportation in Iowa: A Historical Summary
1355:
1353:
1303:
1301:
1085:
1083:
1081:
1079:
323:U.S. Highways in Iowa as designated in 1926
1943:
1929:
1921:
1574:
1560:
1552:
1477:"Photo Gallery — County road markers"
1309:"Iowa Registered Highway Routes 1914-1925"
1038:Iowa Department of Transportation (1996).
824:
822:
820:
758:Secondary roads are defined simply by the
1314:. Iowa Department of Transportation. 1986
1001:
999:
981:
979:
723:Manual on Uniform Traffic Control Devices
621:
618:
615:
340:easier, while the Jefferson Highway from
212:Manual on Uniform Traffic Control Devices
1547:Iowa DOT - Office of Transportation Data
1007:"Completion Status of Interstate System"
705:
933:"Consumer Price Index (estimate) 1800–"
816:
2244:Omaha–Council Bluffs metropolitan area
1584:Numbered highways in the United States
856:
854:
852:
850:
764:those roads under county jurisdiction.
206:make up the secondary highway system.
17:
931:Federal Reserve Bank of Minneapolis.
833:. Iowa Department of Transportation.
607:Standard highway markers used in Iowa
7:
1475:Hancock, Jason (February 16, 2009).
589:, when resources were reallocated.
862:"Rules of the Road:Highway Safety"
14:
1542:Iowa Department of Transportation
1444:Iowa Department of Transportation
1412:Iowa Department of Transportation
1258:Iowa Department of Transportation
1225:"United States Numbered Highways"
972:. September 26, 1929. p. 12.
252:Iowa Department of Transportation
163:Iowa Department of Transportation
2897:
1337:. Federal Highway Administration
799:
787:
711:
694:
687:
680:
668:
661:
654:
642:
635:
43:
31:
26:
21:
1141:. June 24, 2003. Archived from
957:. October 25, 1929. p. 14.
376:Federal Aid Highway Act of 1956
300:United States Numbered Highways
1227:. AASHTO. 1989. Archived from
868:. Iowa Public Television. 2009
450:extensions into municipalities
344:to Ames facilitated travel to
1:
1507:. Retrieved October 30, 2009.
829:Thompson, William H. (1989).
402:, and Interstate 80 followed
37:Iowa's primary highway system
2209:Des Moines metropolitan area
1167:. Retrieved January 8, 2009.
925:American Antiquarian Society
905:American Antiquarian Society
710:
702:
693:
686:
679:
676:
667:
660:
653:
650:
641:
634:
629:
626:
612:
566:Federal Aid Road Act of 1916
185:at 0.27 miles (430 m).
161:'s public road system. The
585:. The paving lasted until
276:Lincoln Highway Association
112:Iowa Primary Highway System
2945:
720:
557:Lincoln Highway bridge in
363:
297:
226:
195:Interstate Highway Systems
98:Highway X (IA X or Iowa X)
2893:
1962:
1177:State Treasurer of Iowa.
529:road miles in the state.
394:, Interstate 35 followed
380:Interstate Highway System
366:Interstate Highway System
360:Interstate Highway System
107:
42:
20:
2161:Secretary of Agriculture
1900:Northern Mariana Islands
1519:"The Iowa Highways Page"
1203:"Route Log & Finder"
2019:Congressional districts
506:On April 17, 2003, the
2924:Transportation in Iowa
1604:U.S. Numbered Highways
1481:The Iowa Highways Page
1333:Weingroff, Richard F.
755:
561:
504:
470:
443:
324:
286:became No. 6, and the
271:
171:United States Highways
151:primary highway system
2214:Dissected Till Plains
1205:. FHWA. November 2002
1019:on September 29, 2011
992:. Cedar Rapids, Iowa.
806:U.S. Roads portal
746:
556:
546:. Interstate 80 and
491:
445:
441:
322:
269:
88:U.S. Highway X (US X)
1890:District of Columbia
768:Farm-to-market roads
484:System modernization
374:corridor. When the
204:farm-to-market roads
2204:Coteau des Prairies
1599:Interstate Highways
1455:Standard Road Plans
1423:Standard Road Plans
1231:on February 4, 2007
627:Interstate Highway
609:
577:, near what is now
499:farm-to-market road
426:System improvements
294:U.S. Highway System
237:and ill-suited for
229:Good Roads Movement
175:Iowa state highways
167:Interstate Highways
2186:Treasurer of State
2166:Secretary of State
970:Des Moines Tribune
955:Des Moines Tribune
756:
605:
562:
444:
325:
272:
247:Iowa State College
78:Interstate X (I-X)
55:System information
2911:
2910:
2134:Political parties
1918:
1917:
1260:. January 1, 2009
719:
718:
280:Jefferson Highway
147:
146:
2936:
2902:
2901:
2900:
2234:Iowa Great Lakes
2224:Great River Road
2127:Native Americans
1999:Auditor of State
1994:Attorney General
1945:
1938:
1931:
1922:
1616:
1592:National systems
1585:
1576:
1569:
1562:
1553:
1530:
1529:
1527:
1525:
1517:Hancock, Jason.
1514:
1508:
1501:
1492:
1491:
1489:
1487:
1472:
1466:
1465:
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1461:
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1330:
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1313:
1305:
1296:
1295:
1293:
1291:
1280:"Traffic Counts"
1276:
1270:
1269:
1267:
1265:
1255:
1247:
1241:
1240:
1238:
1236:
1221:
1215:
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1210:
1199:
1193:
1192:
1190:
1188:
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1174:
1168:
1161:
1155:
1154:
1152:
1150:
1135:
1129:
1128:
1126:
1124:
1119:. April 17, 2003
1113:
1107:
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858:
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844:
826:
804:
803:
802:
792:
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790:
715:
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698:
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691:
690:
684:
683:
672:
671:
665:
664:
658:
657:
646:
645:
639:
638:
610:
604:
583:Great Depression
432:General Assembly
84:US Highways
47:
35:
30:
25:
18:
2944:
2943:
2939:
2938:
2937:
2935:
2934:
2933:
2914:
2913:
2912:
2907:
2904:Iowa portal
2898:
2896:
2889:
2381:
2377:West Des Moines
2258:
2190:
2083:Historic Places
2034:Representatives
1970:
1958:
1949:
1919:
1914:
1873:
1614:
1608:
1587:
1583:
1580:
1538:
1533:
1523:
1521:
1516:
1515:
1511:
1503:Iowa Code 2009
1502:
1495:
1485:
1483:
1474:
1473:
1469:
1459:
1457:
1450:
1442:
1441:
1437:
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1395:
1393:
1384:
1383:
1379:
1369:
1367:
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1359:
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1351:
1340:
1338:
1332:
1331:
1327:
1317:
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1311:
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1299:
1289:
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1273:
1263:
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1253:
1249:
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1244:
1234:
1232:
1223:
1222:
1218:
1208:
1206:
1201:
1200:
1196:
1186:
1184:
1181:
1176:
1175:
1171:
1163:Iowa Code 2009
1162:
1158:
1148:
1146:
1145:on May 13, 2007
1137:
1136:
1132:
1122:
1120:
1115:
1114:
1110:
1100:
1098:
1097:. State of Iowa
1094:
1089:
1088:
1077:
1067:
1065:
1064:. State of Iowa
1061:
1055:
1054:
1047:
1037:
1036:
1032:
1022:
1020:
1016:
1009:
1005:
1004:
997:
985:
984:
977:
967:
966:
962:
952:
951:
947:
937:
935:
930:
920:
912:McCusker, J. J.
910:
900:
892:McCusker, J. J.
890:
888:
881:
871:
869:
860:
859:
848:
841:
828:
827:
818:
814:
800:
798:
794:Iowa portal
788:
786:
783:
775:County Road 105
741:
739:Secondary roads
725:
712:
703:County highway
695:
688:
681:
669:
662:
655:
643:
636:
603:
535:
486:
428:
416:West Des Moines
368:
362:
336:made travel to
302:
296:
290:became No. 40.
284:Lincoln Highway
235:horse and buggy
231:
225:
220:
179:U.S. Highway 30
50:
38:
12:
11:
5:
2942:
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2307:Council Bluffs
2304:
2299:
2294:
2289:
2284:
2279:
2274:
2268:
2266:
2264:Largest cities
2260:
2259:
2257:
2256:
2251:
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2241:
2236:
2231:
2226:
2221:
2219:Driftless Area
2216:
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2206:
2200:
2198:
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2191:
2189:
2188:
2183:
2178:
2173:
2168:
2163:
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2055:
2054:
2053:
2043:
2042:
2041:
2036:
2026:
2021:
2016:
2011:
2009:Climate change
2006:
2001:
1996:
1991:
1986:
1980:
1978:
1972:
1971:
1963:
1960:
1959:
1950:
1948:
1947:
1940:
1933:
1925:
1916:
1915:
1913:
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1910:Virgin Islands
1907:
1902:
1897:
1892:
1887:
1885:American Samoa
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1872:
1871:
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1861:
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1851:
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1836:
1831:
1826:
1821:
1819:South Carolina
1816:
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1806:
1801:
1796:
1791:
1786:
1784:North Carolina
1781:
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1615:State highways
1610:
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1601:
1595:
1593:
1589:
1588:
1581:
1579:
1578:
1571:
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1544:
1537:
1536:External links
1534:
1532:
1531:
1509:
1493:
1467:
1435:
1403:
1392:on May 6, 2009
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1325:
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1030:
995:
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929:1800–present:
879:
846:
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808:
796:
782:
779:
740:
737:
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692:
685:
678:
677:State highway
674:
673:
666:
659:
652:
648:
647:
640:
633:
628:
624:
623:
622:3 digits
620:
619:2 digits
617:
614:
602:
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544:Council Bluffs
534:
531:
503:
502:
495:
485:
482:
469:
468:
465:
462:
459:
456:
453:
427:
424:
420:Interstate 380
392:U.S. Route 275
361:
358:
295:
292:
288:Red Ball Route
224:
223:Early highways
221:
219:
216:
183:Interstate 129
145:
144:
143:
142:
137:
132:
127:
122:
116:
115:
105:
104:
100:
99:
96:
90:
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61:
57:
56:
52:
51:
48:
40:
39:
36:
13:
10:
9:
6:
4:
3:
2:
2941:
2930:
2929:Roads in Iowa
2927:
2925:
2922:
2921:
2919:
2906:
2905:
2892:
2886:
2883:
2881:
2878:
2876:
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2848:
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2808:
2806:
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2798:
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2780:Pottawattamie
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2202:
2201:
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2187:
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2179:
2177:
2176:Supreme Court
2174:
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2162:
2159:
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2110:
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2101:
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2031:
2030:
2027:
2025:
2022:
2020:
2017:
2015:
2012:
2010:
2007:
2005:
2002:
2000:
1997:
1995:
1992:
1990:
1987:
1985:
1982:
1981:
1979:
1977:
1973:
1968:
1967:
1961:
1957:
1953:
1946:
1941:
1939:
1934:
1932:
1927:
1926:
1923:
1911:
1908:
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1891:
1888:
1886:
1883:
1882:
1880:
1876:
1870:
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1865:
1862:
1860:
1859:West Virginia
1857:
1855:
1852:
1850:
1847:
1845:
1842:
1840:
1837:
1835:
1832:
1830:
1827:
1825:
1822:
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1800:
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1790:
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1785:
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1772:
1770:
1767:
1765:
1764:New Hampshire
1762:
1760:
1757:
1755:
1752:
1750:
1747:
1745:
1742:
1740:
1737:
1735:
1732:
1730:
1727:
1725:
1724:Massachusetts
1722:
1720:
1717:
1715:
1712:
1710:
1707:
1705:
1702:
1700:
1697:
1695:
1692:
1690:
1687:
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1650:
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1625:
1622:
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1605:
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1600:
1597:
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1590:
1586:
1577:
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1570:
1565:
1563:
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1548:
1545:
1543:
1540:
1539:
1535:
1520:
1513:
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1500:
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1494:
1482:
1478:
1471:
1468:
1456:
1449:
1445:
1439:
1436:
1424:
1417:
1413:
1407:
1404:
1391:
1387:
1381:
1378:
1363:
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1350:
1336:
1329:
1326:
1310:
1304:
1302:
1298:
1285:
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1226:
1220:
1217:
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1080:
1076:
1060:
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1008:
1002:
1000:
996:
991:
990:
982:
980:
976:
971:
964:
961:
956:
949:
946:
934:
926:
919:
918:
913:
906:
899:
898:
893:
886:
884:
880:
867:
866:Iowa Pathways
863:
857:
855:
853:
851:
847:
842:
840:0-9623167-0-9
836:
832:
825:
823:
821:
817:
811:
807:
797:
795:
785:
784:
780:
778:
776:
771:
769:
765:
761:
754:
750:
749:Louisa County
745:
738:
736:
733:
729:
724:
708:
701:
675:
651:U.S. Highway
649:
632:
625:
616:1 digit
611:
608:
600:
598:
594:
590:
588:
584:
580:
579:U.S. Route 18
576:
572:
567:
560:
555:
551:
549:
545:
541:
532:
530:
526:
522:
520:
516:
513:
509:
500:
497:Transferring
496:
493:
492:
490:
483:
481:
479:
474:
466:
463:
460:
457:
454:
451:
447:
446:
440:
436:
433:
425:
423:
421:
417:
413:
409:
405:
401:
400:U.S. Route 69
397:
396:U.S. Route 65
393:
389:
388:U.S. Route 75
385:
384:Interstate 29
381:
377:
373:
372:Interstate 80
367:
359:
357:
355:
351:
347:
343:
339:
335:
331:
321:
317:
315:
311:
307:
304:In 1925, the
301:
293:
291:
289:
285:
281:
277:
268:
264:
262:
257:
253:
248:
244:
240:
236:
230:
222:
217:
215:
213:
207:
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201:
196:
192:
186:
184:
180:
176:
172:
168:
164:
160:
156:
152:
141:
138:
136:
133:
131:
128:
126:
123:
121:
118:
117:
114:
113:
109:
108:
106:
101:
97:
95:
91:
87:
85:
81:
77:
75:
71:
68:Highway names
66:
62:
58:
53:
46:
41:
34:
29:
24:
19:
16:
2895:
2342:Marshalltown
2297:Cedar Rapids
1964:
1824:South Dakota
1814:Rhode Island
1809:Pennsylvania
1789:North Dakota
1693:
1522:. Retrieved
1512:
1484:. Retrieved
1480:
1470:
1458:. Retrieved
1454:
1438:
1426:. Retrieved
1422:
1406:
1394:. Retrieved
1390:the original
1380:
1368:. Retrieved
1339:. Retrieved
1328:
1316:. Retrieved
1288:. Retrieved
1283:
1274:
1262:. Retrieved
1245:
1233:. Retrieved
1229:the original
1219:
1207:. Retrieved
1197:
1185:. Retrieved
1172:
1159:
1147:. Retrieved
1143:the original
1139:"BH SF 0451"
1133:
1121:. Retrieved
1111:
1099:. Retrieved
1066:. Retrieved
1039:
1033:
1021:. Retrieved
1014:the original
987:
969:
963:
954:
948:
938:February 29,
936:. Retrieved
916:
896:
870:. Retrieved
865:
830:
772:
763:
757:
734:
730:
726:
706:
630:
606:
595:
591:
587:World War II
563:
548:U.S. Route 6
536:
527:
523:
505:
487:
475:
471:
429:
404:U.S. Route 6
378:created the
369:
354:Cedar Rapids
326:
310:U.S. Highway
303:
273:
232:
208:
191:U.S. Highway
189:paved. The
187:
174:
170:
166:
150:
148:
111:
110:
103:System links
15:
2475:Cerro Gordo
2445:Buena Vista
2292:Cedar Falls
2249:Quad Cities
2239:Loess Hills
2229:Honey Lands
2171:State Parks
2144:Libertarian
2112:LGBT rights
2095:Legislature
2058:Environment
2029:Delegations
1984:Archaeology
1905:Puerto Rico
1878:Other areas
1739:Mississippi
1654:Connecticut
1524:October 31,
1486:December 3,
1428:October 26,
1396:December 3,
1370:October 31,
1341:October 29,
1318:October 26,
1290:December 3,
1264:January 21,
1235:October 29,
1209:October 21,
1187:February 6,
1068:January 28,
1023:October 20,
989:The Gazette
909:1700–1799:
889:1634–1699:
872:October 26,
613:Route type
519:spur routes
515:Tom Vilsack
508:Iowa Senate
346:Kansas City
239:automobiles
74:Interstates
2918:Categories
2870:Winneshiek
2850:Washington
2770:Pocahontas
2735:Montgomery
2535:Des Moines
2425:Black Hawk
2362:Sioux City
2347:Mason City
2327:Fort Dodge
2317:Des Moines
2287:Burlington
2282:Bettendorf
2149:Republican
2139:Democratic
1989:Area codes
1966:Des Moines
1854:Washington
1774:New Mexico
1769:New Jersey
1644:California
1256:(Report).
1149:January 8,
1123:January 8,
1101:January 8,
812:References
721:See also:
575:Clear Lake
571:Mason City
478:renumbered
364:See also:
350:Des Moines
314:renumbered
298:See also:
256:Missourian
243:commission
227:See also:
155:U.S. state
120:Interstate
2865:Winnebago
2835:Van Buren
2785:Poweshiek
2760:Palo Alto
2740:Muscatine
2645:Jefferson
2540:Dickinson
2485:Chickasaw
2410:Appanoose
2405:Allamakee
2367:Urbandale
2352:Muscatine
2332:Iowa City
2312:Davenport
2254:Siouxland
2046:Elections
1969:(capital)
1864:Wisconsin
1829:Tennessee
1734:Minnesota
1709:Louisiana
760:Iowa Code
751:south of
540:Davenport
386:followed
135:Secondary
2875:Woodbury
2790:Ringgold
2765:Plymouth
2720:Mitchell
2710:Marshall
2620:Humboldt
2605:Harrison
2590:Hamilton
2565:Franklin
2530:Delaware
2510:Crawford
2480:Cherokee
2440:Buchanan
2387:Counties
2372:Waterloo
2073:Gun laws
2068:Governor
2051:Caucuses
2039:Senators
1849:Virginia
1799:Oklahoma
1779:New York
1754:Nebraska
1744:Missouri
1729:Michigan
1719:Maryland
1704:Kentucky
1684:Illinois
1659:Delaware
1649:Colorado
1639:Arkansas
1117:"SF 451"
914:(1992).
894:(1997).
781:See also
512:Governor
200:counties
2860:Webster
2840:Wapello
2750:Osceola
2745:O'Brien
2700:Mahaska
2695:Madison
2665:Kossuth
2650:Johnson
2635:Jackson
2595:Hancock
2585:Guthrie
2570:Fremont
2555:Fayette
2545:Dubuque
2525:Decatur
2505:Clinton
2500:Clayton
2460:Carroll
2455:Calhoun
2415:Audubon
2357:Ottumwa
2322:Dubuque
2302:Clinton
2196:Regions
2181:Symbols
2117:Museums
2078:History
2004:Capitol
1869:Wyoming
1844:Vermont
1749:Montana
1689:Indiana
1669:Georgia
1664:Florida
1634:Arizona
1624:Alabama
1460:June 4,
601:Signage
533:Funding
410:and of
338:Chicago
334:Clinton
218:History
210:in the
2885:Wright
2845:Warren
2825:Taylor
2805:Shelby
2730:Monroe
2725:Monona
2705:Marion
2680:Louisa
2660:Keokuk
2640:Jasper
2615:Howard
2600:Hardin
2580:Grundy
2575:Greene
2515:Dallas
2490:Clarke
2450:Butler
2435:Bremer
2420:Benton
2337:Marion
2277:Ankeny
2122:People
2105:Senate
1976:Topics
1804:Oregon
1759:Nevada
1699:Kansas
1674:Hawaii
1629:Alaska
1505:§306.3
1165:§306.8
837:
753:Cotter
342:Lamoni
282:, the
261:county
173:, and
140:Scenic
2880:Worth
2855:Wayne
2830:Union
2815:Story
2810:Sioux
2800:Scott
2715:Mills
2685:Lucas
2655:Jones
2610:Henry
2560:Floyd
2550:Emmet
2520:Davis
2470:Cedar
2430:Boone
2400:Adams
2395:Adair
2100:House
2090:Index
2024:Crime
1952:State
1834:Texas
1714:Maine
1679:Idaho
1451:(PDF)
1419:(PDF)
1365:(PDF)
1312:(PDF)
1254:(PDF)
1182:(PDF)
1095:(PDF)
1062:(PDF)
1017:(PDF)
1010:(PDF)
921:(PDF)
901:(PDF)
414:near
130:State
94:State
60:Notes
2820:Tama
2775:Polk
2755:Page
2690:Lyon
2675:Linn
2630:Iowa
2495:Clay
2465:Cass
2272:Ames
2156:Seal
2063:Flag
2014:Code
1956:Iowa
1895:Guam
1839:Utah
1794:Ohio
1694:Iowa
1526:2009
1488:2009
1462:2007
1430:2009
1398:2009
1372:2009
1343:2009
1320:2009
1292:2009
1266:2011
1237:2008
1211:2008
1189:2010
1151:2009
1125:2009
1103:2009
1070:2010
1025:2009
940:2024
874:2009
835:ISBN
707:none
631:none
573:and
564:The
559:Tama
542:and
412:I-80
408:I-35
398:and
390:and
352:and
330:Ames
193:and
159:Iowa
149:The
2795:Sac
2670:Lee
2625:Ida
1954:of
762:as
332:to
245:at
157:of
2920::
1496:^
1479:.
1453:.
1446:.
1421:.
1414:.
1352:^
1300:^
1282:.
1078:^
1048:^
998:^
978:^
923:.
903:.
882:^
864:.
849:^
819:^
356:.
214:.
169:,
125:US
1944:e
1937:t
1930:v
1575:e
1568:t
1561:v
1528:.
1490:.
1464:.
1432:.
1400:.
1374:.
1347:,
1345:.
1322:.
1294:.
1268:.
1239:.
1213:.
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452:.
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