278:
565:
755:
604:(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.
289:, 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
450:
707:
724:
700:
331:
44:
788:, 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.
655:
56:
693:
648:
2910:
812:
800:
34:
781:, 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).
681:
674:
39:
667:
739:
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.
742:
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),
738:
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
220:
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
499:
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
607:
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
445:
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
539:
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
535:
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
548:
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
338:
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
603:
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
199:
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
208:
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
608:
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.
446:
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:
260:
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
429:, 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
536:
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.
579:
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
483:
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.
1067:
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).
269:
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
743:
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.
265:, 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
561:
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.
327:
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.
60:
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.
1910:
274:
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.
2093:
2039:
2044:
316:
1584:
1920:
469:
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.
2254:
592:. 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
1515:
1175:
908:
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
393:, plans for the toll road were scrapped with great fervor. In Iowa, interstate corridors were designed to follow existing U.S. Highway corridors –
478:
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.
2274:
733:
222:
2049:
1900:
1149:
1739:
1834:
1799:
1593:
784:
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
441:
In 1959, the nascent Interstate Highway System was growing while the existing primary highway system was beginning to show its age. The 58th
1614:
94:
1213:
1069:
1874:
943:
1189:
1829:
1744:
1719:
1664:
521:
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
130:
1895:
1869:
1809:
1734:
1659:
1577:
1235:
466:
Transferring 1,902 miles (3,061 km) of local service highways to local jurisdictions or a separate division of primary highways.
281:
A concrete Lincoln Highway route marker as seen at the Smithsonian National Museum. Few of these markers still exist along the route.
1879:
1854:
1784:
1454:
1422:
1268:
1017:
849:
262:
173:
2029:
1345:
928:
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
2171:
2144:
1749:
1709:
1684:
2934:
1824:
1819:
1689:
1679:
1644:
1634:
386:
310:
201:
2137:
2100:
1953:
1849:
1769:
140:
381:
In the 1950s, the Iowa State Highway Commission planned an east-west toll road across the state, roughly along the current
2110:
1794:
1789:
1764:
1754:
1714:
1694:
1570:
1396:
488:
324:
253:
135:
2219:
1864:
1839:
1779:
1774:
1699:
1674:
1654:
935:
915:
576:
1669:
286:
746:
All county routes are signed with the MUTCD-standard blue pentagonal shield, however some older signs still remain.
2790:
2191:
2176:
1859:
1844:
1724:
999:
532:
and segments bypassed after new construction, were turned over to county or municipal governments on July 1, 2003.
150:
2154:
2078:
1804:
1609:
1127:
390:
376:
205:
84:
2485:
2455:
2397:
2181:
2159:
2132:
2004:
1905:
1814:
277:
271:
210:
319:
approved a national numbering system for roads, which quickly replaced the registered route system. The new
2880:
2860:
2780:
2755:
2745:
2545:
2435:
2127:
1999:
1729:
1649:
777:
The 99 counties in Iowa divide the secondary road system into farm-to-market roads and area service roads.
442:
285:
The predecessor of the primary highway system was the registered route system. Organizations, such as the
2939:
2875:
2845:
2795:
2770:
2750:
2655:
2550:
2495:
2420:
2415:
2019:
1759:
785:
430:
320:
1153:
2885:
2800:
2775:
2730:
2720:
2630:
2615:
2600:
2575:
2540:
2520:
2490:
2450:
2387:
2224:
2149:
2105:
1639:
1101:
Reeder, Greg; Stevens, Larry; Fichtner, Royce; Stoner, Tom; Wandro, Mark; Volmer, Neil (April 1, 2003).
589:
426:
422:
418:
394:
356:
189:
1458:
1426:
754:
2870:
2850:
2760:
2710:
2705:
2675:
2660:
2645:
2605:
2595:
2580:
2565:
2555:
2535:
2515:
2510:
2470:
2465:
2425:
2317:
1915:
558:
554:
382:
145:
564:
2895:
2855:
2835:
2815:
2740:
2735:
2715:
2690:
2670:
2650:
2625:
2610:
2590:
2585:
2525:
2500:
2460:
2445:
2430:
2214:
2122:
2068:
1994:
778:
759:
509:
239:
214:
2890:
2865:
2840:
2825:
2820:
2810:
2725:
2695:
2665:
2620:
2570:
2560:
2530:
2480:
2440:
2410:
2405:
2352:
2307:
2186:
2014:
2009:
1946:
364:
257:
1102:
475:
Classifying municipal roads not in the primary highway system into arterials and access streets.
926:
906:
176:
is responsible for the day-to-day maintenance of the primary highway system, which consists of
2830:
2785:
2765:
2700:
2685:
2640:
2505:
2475:
2302:
2206:
2196:
2056:
872:
845:
816:
290:
2805:
2680:
2635:
2372:
2357:
2337:
2327:
2297:
2292:
2244:
2234:
2083:
1976:
922:
902:
593:
585:
581:
522:
360:
1239:
2377:
2362:
2342:
2322:
2088:
1986:
550:
505:
Transferring 712 miles (1,146 km) of primary highways to county and city governments.
449:
294:
245:
1562:
1024:
323:
system grew and improved for thirty years, until Interstate highways were created. Iowa
1261:
359:. These two new roads also made travel easier between Iowa's two most populous cities,
2382:
2229:
402:
298:
193:
2928:
2367:
2332:
2312:
2061:
2034:
1939:
1624:
410:
406:
398:
344:
104:
17:
2347:
2287:
2166:
2073:
2024:
763:
597:
414:
352:
43:
1319:
1487:
2914:
2259:
2249:
2115:
804:
529:
525:
518:
339:
roads connecting two state borders neared completion. The Lincoln Highway from
249:
1400:
528:
on May 23, 2003. Over 600 miles (970 km) of state highways, mostly short
252:. As more Iowans purchased automobiles, the Iowa legislature set up in 1904 a
2282:
1962:
569:
460:
459:
Limiting the primary highway system to 8,400 miles (13,500 km) including
453:
U.S. Route 34 near Chariton, a typical rural Iowa scene along Iowa's highways.
340:
165:
2264:
2239:
1290:
770:
164:
makes up over 9,000 miles (14,000 km), approximately 8 percent of the
55:
1070:"Report of the Iowa Highway Study Committee"
758:
Typical signage used on a county highway in Iowa, as seen along CR W66 in
500:
with the rising costs. The RUTF committee had two major recommendations:
472:
Reclassifying county roads into trunk, feeder, and local secondary roads.
266:
1190:"Street Construction / Transfer of Jurisdiction (August 2009–July 2010)"
348:
330:
1372:
33:
1023:. Iowa Department of Transportation. January 1, 1982. Archived from
244:
At the turn of the 20th century, roads in Iowa were suited for
753:
563:
448:
329:
276:
417:. The first section of interstate highway in Iowa, a section of
1966:
1931:
964:"Iowa Spends Three Million on Highway Paving During September".
169:
38:
1935:
1566:
1103:"Evaluation of the State Highway System and Road Use Tax Fund"
1557:
1051:
The National System of Interstate Defense Highways 1956–1996
549:
first registered route, the River-to-River Route, connected
1529:
491:, largely creating the numbered routes which remain today.
512:
extensions in cities under 500 population to the counties.
1552:
1427:"Type 'A' U.S. and State Route Markers (Independent Use)"
1262:
2009 Volume of Traffic on the Primary Road System of Iowa
74:
Primary highways in Iowa are generally state-maintained.
1346:"Federal Aid Road Act of 1916:Building the Foundation"
1297:. Iowa Department of Transportation. November 21, 2007
1295:
About the DOT — Iowa Department of Transportation
979:"Paved Highway to Extend Across Iowa by End of Year".
1459:"Type 'A' Interstate Route Markers (Independent Use)"
1373:"Discovering historic Iowa transportation milestones"
192:
at 332 miles (534 km). The shortest highway is
2396:
2273:
2205:
1985:
1888:
1623:
1602:
1371:Iowa Department of Transportation (February 1999).
433:to be completed, was opened on September 12, 1985.
113:
103:
93:
83:
78:
70:
65:
1510:
1508:
997:Boshart, Rod (June 16, 1996). "Ribbons of Roads".
487:On January 1, 1969, many highways in Iowa were
317:American Association of State Highway Officials
1397:"Iowa Department of Revenue — Iowa Taxes"
896:
894:
213:and local jurisdictions, county highways, and
1947:
1578:
1062:
1060:
188:. Currently, the longest primary highway is
8:
1399:. Iowa Department of Revenue. Archived from
842:Transportation in Iowa: A Historical Summary
1366:
1364:
1314:
1312:
1096:
1094:
1092:
1090:
334:U.S. Highways in Iowa as designated in 1926
1954:
1940:
1932:
1585:
1571:
1563:
1488:"Photo Gallery — County road markers"
1320:"Iowa Registered Highway Routes 1914-1925"
1049:Iowa Department of Transportation (1996).
835:
833:
831:
769:Secondary roads are defined simply by the
1325:. Iowa Department of Transportation. 1986
1012:
1010:
992:
990:
734:Manual on Uniform Traffic Control Devices
632:
629:
626:
351:easier, while the Jefferson Highway from
223:Manual on Uniform Traffic Control Devices
1558:Iowa DOT - Office of Transportation Data
1018:"Completion Status of Interstate System"
716:
944:"Consumer Price Index (estimate) 1800–"
827:
2255:Omaha–Council Bluffs metropolitan area
1595:Numbered highways in the United States
867:
865:
863:
861:
775:those roads under county jurisdiction.
217:make up the secondary highway system.
28:
942:Federal Reserve Bank of Minneapolis.
844:. Iowa Department of Transportation.
618:Standard highway markers used in Iowa
7:
1486:Hancock, Jason (February 16, 2009).
600:, when resources were reallocated.
873:"Rules of the Road:Highway Safety"
25:
1553:Iowa Department of Transportation
1455:Iowa Department of Transportation
1423:Iowa Department of Transportation
1269:Iowa Department of Transportation
1236:"United States Numbered Highways"
983:. September 26, 1929. p. 12.
263:Iowa Department of Transportation
174:Iowa Department of Transportation
2908:
1348:. Federal Highway Administration
810:
798:
722:
705:
698:
691:
679:
672:
665:
653:
646:
54:
42:
37:
32:
1152:. June 24, 2003. Archived from
968:. October 25, 1929. p. 14.
387:Federal Aid Highway Act of 1956
311:United States Numbered Highways
1238:. AASHTO. 1989. Archived from
879:. Iowa Public Television. 2009
461:extensions into municipalities
355:to Ames facilitated travel to
1:
1518:. Retrieved October 30, 2009.
840:Thompson, William H. (1989).
413:, and Interstate 80 followed
48:Iowa's primary highway system
2220:Des Moines metropolitan area
1178:. Retrieved January 8, 2009.
936:American Antiquarian Society
916:American Antiquarian Society
721:
713:
704:
697:
690:
687:
678:
671:
664:
661:
652:
645:
640:
637:
623:
577:Federal Aid Road Act of 1916
196:at 0.27 miles (430 m).
172:'s public road system. The
596:. The paving lasted until
287:Lincoln Highway Association
123:Iowa Primary Highway System
2956:
731:
568:Lincoln Highway bridge in
374:
308:
237:
206:Interstate Highway Systems
109:Highway X (IA X or Iowa X)
2904:
1973:
1188:State Treasurer of Iowa.
540:road miles in the state.
405:, Interstate 35 followed
391:Interstate Highway System
377:Interstate Highway System
371:Interstate Highway System
118:
53:
31:
2172:Secretary of Agriculture
1911:Northern Mariana Islands
1530:"The Iowa Highways Page"
1214:"Route Log & Finder"
2030:Congressional districts
517:On April 17, 2003, the
2935:Transportation in Iowa
1615:U.S. Numbered Highways
1492:The Iowa Highways Page
1344:Weingroff, Richard F.
766:
572:
515:
481:
454:
335:
297:became No. 6, and the
282:
182:United States Highways
162:primary highway system
2225:Dissected Till Plains
1216:. FHWA. November 2002
1030:on September 29, 2011
1003:. Cedar Rapids, Iowa.
817:U.S. Roads portal
757:
567:
557:. Interstate 80 and
502:
456:
452:
333:
280:
99:U.S. Highway X (US X)
1901:District of Columbia
779:Farm-to-market roads
495:System modernization
385:corridor. When the
215:farm-to-market roads
18:State highway (Iowa)
2215:Coteau des Prairies
1610:Interstate Highways
1466:Standard Road Plans
1434:Standard Road Plans
1242:on February 4, 2007
638:Interstate Highway
620:
588:, near what is now
510:farm-to-market road
437:System improvements
305:U.S. Highway System
248:and ill-suited for
240:Good Roads Movement
186:Iowa state highways
178:Interstate Highways
2197:Treasurer of State
2177:Secretary of State
981:Des Moines Tribune
966:Des Moines Tribune
767:
616:
573:
455:
336:
283:
258:Iowa State College
89:Interstate X (I-X)
66:System information
2922:
2921:
2145:Political parties
1929:
1928:
1271:. January 1, 2009
730:
729:
291:Jefferson Highway
158:
157:
16:(Redirected from
2947:
2913:
2912:
2911:
2245:Iowa Great Lakes
2235:Great River Road
2138:Native Americans
2010:Auditor of State
2005:Attorney General
1956:
1949:
1942:
1933:
1627:
1603:National systems
1596:
1587:
1580:
1573:
1564:
1541:
1540:
1538:
1536:
1528:Hancock, Jason.
1525:
1519:
1512:
1503:
1502:
1500:
1498:
1483:
1477:
1476:
1474:
1472:
1463:
1451:
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1431:
1419:
1413:
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1410:
1408:
1393:
1387:
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1384:
1382:
1377:
1368:
1359:
1357:
1355:
1353:
1341:
1335:
1334:
1332:
1330:
1324:
1316:
1307:
1306:
1304:
1302:
1291:"Traffic Counts"
1287:
1281:
1280:
1278:
1276:
1266:
1258:
1252:
1251:
1249:
1247:
1232:
1226:
1225:
1223:
1221:
1210:
1204:
1203:
1201:
1199:
1194:
1185:
1179:
1172:
1166:
1165:
1163:
1161:
1146:
1140:
1139:
1137:
1135:
1130:. April 17, 2003
1124:
1118:
1117:
1115:
1113:
1107:
1098:
1085:
1084:
1082:
1080:
1074:
1064:
1055:
1054:
1046:
1040:
1039:
1037:
1035:
1029:
1022:
1014:
1005:
1004:
994:
985:
984:
976:
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969:
961:
955:
954:
952:
950:
939:
933:
919:
913:
898:
889:
888:
886:
884:
869:
856:
855:
837:
815:
814:
813:
803:
802:
801:
726:
725:
709:
708:
702:
701:
695:
694:
683:
682:
676:
675:
669:
668:
657:
656:
650:
649:
621:
615:
594:Great Depression
443:General Assembly
95:US Highways
58:
46:
41:
36:
29:
21:
2955:
2954:
2950:
2949:
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2923:
2918:
2915:Iowa portal
2909:
2907:
2900:
2392:
2388:West Des Moines
2269:
2201:
2094:Historic Places
2045:Representatives
1981:
1969:
1960:
1930:
1925:
1884:
1625:
1619:
1598:
1594:
1591:
1549:
1544:
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1514:Iowa Code 2009
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1506:
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1461:
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1219:
1217:
1212:
1211:
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1197:
1195:
1192:
1187:
1186:
1182:
1174:Iowa Code 2009
1173:
1169:
1159:
1157:
1156:on May 13, 2007
1148:
1147:
1143:
1133:
1131:
1126:
1125:
1121:
1111:
1109:
1108:. State of Iowa
1105:
1100:
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1088:
1078:
1076:
1075:. State of Iowa
1072:
1066:
1065:
1058:
1048:
1047:
1043:
1033:
1031:
1027:
1020:
1016:
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988:
978:
977:
973:
963:
962:
958:
948:
946:
941:
931:
923:McCusker, J. J.
921:
911:
903:McCusker, J. J.
901:
899:
892:
882:
880:
871:
870:
859:
852:
839:
838:
829:
825:
811:
809:
805:Iowa portal
799:
797:
794:
786:County Road 105
752:
750:Secondary roads
736:
723:
714:County highway
706:
699:
692:
680:
673:
666:
654:
647:
614:
546:
497:
439:
427:West Des Moines
379:
373:
347:made travel to
313:
307:
301:became No. 40.
295:Lincoln Highway
246:horse and buggy
242:
236:
231:
190:U.S. Highway 30
61:
49:
23:
22:
15:
12:
11:
5:
2953:
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2318:Council Bluffs
2315:
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2305:
2300:
2295:
2290:
2285:
2279:
2277:
2275:Largest cities
2271:
2270:
2268:
2267:
2262:
2257:
2252:
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2242:
2237:
2232:
2230:Driftless Area
2227:
2222:
2217:
2211:
2209:
2203:
2202:
2200:
2199:
2194:
2189:
2184:
2179:
2174:
2169:
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2071:
2066:
2065:
2064:
2054:
2053:
2052:
2047:
2037:
2032:
2027:
2022:
2020:Climate change
2017:
2012:
2007:
2002:
1997:
1991:
1989:
1983:
1982:
1974:
1971:
1970:
1961:
1959:
1958:
1951:
1944:
1936:
1927:
1926:
1924:
1923:
1921:Virgin Islands
1918:
1913:
1908:
1903:
1898:
1896:American Samoa
1892:
1890:
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1883:
1882:
1877:
1872:
1867:
1862:
1857:
1852:
1847:
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1837:
1832:
1830:South Carolina
1827:
1822:
1817:
1812:
1807:
1802:
1797:
1795:North Carolina
1792:
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1782:
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1626:State highways
1621:
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1599:
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1548:
1547:External links
1545:
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1520:
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1478:
1446:
1414:
1403:on May 6, 2009
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940:1800–present:
890:
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793:
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751:
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728:
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710:
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696:
689:
688:State highway
685:
684:
677:
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663:
659:
658:
651:
644:
639:
635:
634:
633:3 digits
631:
630:2 digits
628:
625:
613:
610:
555:Council Bluffs
545:
542:
514:
513:
506:
496:
493:
480:
479:
476:
473:
470:
467:
464:
438:
435:
431:Interstate 380
403:U.S. Route 275
372:
369:
306:
303:
299:Red Ball Route
235:
234:Early highways
232:
230:
227:
194:Interstate 129
156:
155:
154:
153:
148:
143:
138:
133:
127:
126:
116:
115:
111:
110:
107:
101:
100:
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68:
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63:
62:
59:
51:
50:
47:
24:
14:
13:
10:
9:
6:
4:
3:
2:
2952:
2941:
2940:Roads in Iowa
2938:
2936:
2933:
2932:
2930:
2917:
2916:
2903:
2897:
2894:
2892:
2889:
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2791:Pottawattamie
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2198:
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2187:Supreme Court
2185:
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2161:
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2028:
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2023:
2021:
2018:
2016:
2013:
2011:
2008:
2006:
2003:
2001:
1998:
1996:
1993:
1992:
1990:
1988:
1984:
1979:
1978:
1972:
1968:
1964:
1957:
1952:
1950:
1945:
1943:
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1934:
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1881:
1878:
1876:
1873:
1871:
1870:West Virginia
1868:
1866:
1863:
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1775:New Hampshire
1773:
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1761:
1758:
1756:
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1735:Massachusetts
1733:
1731:
1728:
1726:
1723:
1721:
1718:
1716:
1713:
1711:
1708:
1706:
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1398:
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1389:
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1120:
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1057:
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1007:
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1001:
993:
991:
987:
982:
975:
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957:
945:
937:
930:
929:
924:
917:
910:
909:
904:
897:
895:
891:
878:
877:Iowa Pathways
874:
868:
866:
864:
862:
858:
853:
851:0-9623167-0-9
847:
843:
836:
834:
832:
828:
822:
818:
808:
806:
796:
795:
791:
789:
787:
782:
780:
776:
772:
765:
761:
760:Louisa County
756:
749:
747:
744:
740:
735:
719:
712:
686:
662:U.S. Highway
660:
643:
636:
627:1 digit
622:
619:
611:
609:
605:
601:
599:
595:
591:
590:U.S. Route 18
587:
583:
578:
571:
566:
562:
560:
556:
552:
543:
541:
537:
533:
531:
527:
524:
520:
511:
508:Transferring
507:
504:
503:
501:
494:
492:
490:
485:
477:
474:
471:
468:
465:
462:
458:
457:
451:
447:
444:
436:
434:
432:
428:
424:
420:
416:
412:
411:U.S. Route 69
408:
407:U.S. Route 65
404:
400:
399:U.S. Route 75
396:
395:Interstate 29
392:
388:
384:
383:Interstate 80
378:
370:
368:
366:
362:
358:
354:
350:
346:
342:
332:
328:
326:
322:
318:
315:In 1925, the
312:
304:
302:
300:
296:
292:
288:
279:
275:
273:
268:
264:
259:
255:
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247:
241:
233:
228:
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224:
218:
216:
212:
207:
203:
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187:
183:
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171:
167:
163:
152:
149:
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144:
142:
139:
137:
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129:
128:
125:
124:
120:
119:
117:
112:
108:
106:
102:
98:
96:
92:
88:
86:
82:
79:Highway names
77:
73:
69:
64:
57:
52:
45:
40:
35:
30:
27:
19:
2906:
2353:Marshalltown
2308:Cedar Rapids
1975:
1835:South Dakota
1825:Rhode Island
1820:Pennsylvania
1800:North Dakota
1704:
1533:. Retrieved
1523:
1495:. Retrieved
1491:
1481:
1469:. Retrieved
1465:
1449:
1437:. Retrieved
1433:
1417:
1405:. Retrieved
1401:the original
1391:
1379:. Retrieved
1350:. Retrieved
1339:
1327:. Retrieved
1299:. Retrieved
1294:
1285:
1273:. Retrieved
1256:
1244:. Retrieved
1240:the original
1230:
1218:. Retrieved
1208:
1196:. Retrieved
1183:
1170:
1158:. Retrieved
1154:the original
1150:"BH SF 0451"
1144:
1132:. Retrieved
1122:
1110:. Retrieved
1077:. Retrieved
1050:
1044:
1032:. Retrieved
1025:the original
998:
980:
974:
965:
959:
949:February 29,
947:. Retrieved
927:
907:
881:. Retrieved
876:
841:
783:
774:
768:
745:
741:
737:
717:
641:
617:
606:
602:
598:World War II
574:
559:U.S. Route 6
547:
538:
534:
516:
498:
486:
482:
440:
415:U.S. Route 6
389:created the
380:
365:Cedar Rapids
337:
321:U.S. Highway
314:
284:
243:
219:
202:U.S. Highway
200:paved. The
198:
185:
181:
177:
161:
159:
122:
121:
114:System links
26:
2486:Cerro Gordo
2456:Buena Vista
2303:Cedar Falls
2260:Quad Cities
2250:Loess Hills
2240:Honey Lands
2182:State Parks
2155:Libertarian
2123:LGBT rights
2106:Legislature
2069:Environment
2040:Delegations
1995:Archaeology
1916:Puerto Rico
1889:Other areas
1750:Mississippi
1665:Connecticut
1535:October 31,
1497:December 3,
1439:October 26,
1407:December 3,
1381:October 31,
1352:October 29,
1329:October 26,
1301:December 3,
1275:January 21,
1246:October 29,
1220:October 21,
1198:February 6,
1079:January 28,
1034:October 20,
1000:The Gazette
920:1700–1799:
900:1634–1699:
883:October 26,
624:Route type
530:spur routes
526:Tom Vilsack
519:Iowa Senate
357:Kansas City
250:automobiles
85:Interstates
2929:Categories
2881:Winneshiek
2861:Washington
2781:Pocahontas
2746:Montgomery
2546:Des Moines
2436:Black Hawk
2373:Sioux City
2358:Mason City
2338:Fort Dodge
2328:Des Moines
2298:Burlington
2293:Bettendorf
2160:Republican
2150:Democratic
2000:Area codes
1977:Des Moines
1865:Washington
1785:New Mexico
1780:New Jersey
1655:California
1267:(Report).
1160:January 8,
1134:January 8,
1112:January 8,
823:References
732:See also:
586:Clear Lake
582:Mason City
489:renumbered
375:See also:
361:Des Moines
325:renumbered
309:See also:
267:Missourian
254:commission
238:See also:
166:U.S. state
131:Interstate
2876:Winnebago
2846:Van Buren
2796:Poweshiek
2771:Palo Alto
2751:Muscatine
2656:Jefferson
2551:Dickinson
2496:Chickasaw
2421:Appanoose
2416:Allamakee
2378:Urbandale
2363:Muscatine
2343:Iowa City
2323:Davenport
2265:Siouxland
2057:Elections
1980:(capital)
1875:Wisconsin
1840:Tennessee
1745:Minnesota
1720:Louisiana
771:Iowa Code
762:south of
551:Davenport
397:followed
146:Secondary
2886:Woodbury
2801:Ringgold
2776:Plymouth
2731:Mitchell
2721:Marshall
2631:Humboldt
2616:Harrison
2601:Hamilton
2576:Franklin
2541:Delaware
2521:Crawford
2491:Cherokee
2451:Buchanan
2398:Counties
2383:Waterloo
2084:Gun laws
2079:Governor
2062:Caucuses
2050:Senators
1860:Virginia
1810:Oklahoma
1790:New York
1765:Nebraska
1755:Missouri
1740:Michigan
1730:Maryland
1715:Kentucky
1695:Illinois
1670:Delaware
1660:Colorado
1650:Arkansas
1128:"SF 451"
925:(1992).
905:(1997).
792:See also
523:Governor
211:counties
2871:Webster
2851:Wapello
2761:Osceola
2756:O'Brien
2711:Mahaska
2706:Madison
2676:Kossuth
2661:Johnson
2646:Jackson
2606:Hancock
2596:Guthrie
2581:Fremont
2566:Fayette
2556:Dubuque
2536:Decatur
2516:Clinton
2511:Clayton
2471:Carroll
2466:Calhoun
2426:Audubon
2368:Ottumwa
2333:Dubuque
2313:Clinton
2207:Regions
2192:Symbols
2128:Museums
2089:History
2015:Capitol
1880:Wyoming
1855:Vermont
1760:Montana
1700:Indiana
1680:Georgia
1675:Florida
1645:Arizona
1635:Alabama
1471:June 4,
612:Signage
544:Funding
421:and of
349:Chicago
345:Clinton
229:History
221:in the
2896:Wright
2856:Warren
2836:Taylor
2816:Shelby
2741:Monroe
2736:Monona
2716:Marion
2691:Louisa
2671:Keokuk
2651:Jasper
2626:Howard
2611:Hardin
2591:Grundy
2586:Greene
2526:Dallas
2501:Clarke
2461:Butler
2446:Bremer
2431:Benton
2348:Marion
2288:Ankeny
2133:People
2116:Senate
1987:Topics
1815:Oregon
1770:Nevada
1710:Kansas
1685:Hawaii
1640:Alaska
1516:§306.3
1176:§306.8
848:
764:Cotter
353:Lamoni
293:, the
272:county
184:, and
151:Scenic
2891:Worth
2866:Wayne
2841:Union
2826:Story
2821:Sioux
2811:Scott
2726:Mills
2696:Lucas
2666:Jones
2621:Henry
2571:Floyd
2561:Emmet
2531:Davis
2481:Cedar
2441:Boone
2411:Adams
2406:Adair
2111:House
2101:Index
2035:Crime
1963:State
1845:Texas
1725:Maine
1690:Idaho
1462:(PDF)
1430:(PDF)
1376:(PDF)
1323:(PDF)
1265:(PDF)
1193:(PDF)
1106:(PDF)
1073:(PDF)
1028:(PDF)
1021:(PDF)
932:(PDF)
912:(PDF)
425:near
141:State
105:State
71:Notes
2831:Tama
2786:Polk
2766:Page
2701:Lyon
2686:Linn
2641:Iowa
2506:Clay
2476:Cass
2283:Ames
2167:Seal
2074:Flag
2025:Code
1967:Iowa
1906:Guam
1850:Utah
1805:Ohio
1705:Iowa
1537:2009
1499:2009
1473:2007
1441:2009
1409:2009
1383:2009
1354:2009
1331:2009
1303:2009
1277:2011
1248:2008
1222:2008
1200:2010
1162:2009
1136:2009
1114:2009
1081:2010
1036:2009
951:2024
885:2009
846:ISBN
718:none
642:none
584:and
575:The
570:Tama
553:and
423:I-80
419:I-35
409:and
401:and
363:and
341:Ames
204:and
170:Iowa
160:The
2806:Sac
2681:Lee
2636:Ida
1965:of
773:as
343:to
256:at
168:of
2931::
1507:^
1490:.
1464:.
1457:.
1432:.
1425:.
1363:^
1311:^
1293:.
1089:^
1059:^
1009:^
989:^
934:.
914:.
893:^
875:.
860:^
830:^
367:.
225:.
180:,
136:US
1955:e
1948:t
1941:v
1586:e
1579:t
1572:v
1539:.
1501:.
1475:.
1443:.
1411:.
1385:.
1358:,
1356:.
1333:.
1305:.
1279:.
1250:.
1224:.
1202:.
1164:.
1138:.
1116:.
1083:.
1053:.
1038:.
953:.
938:.
918:.
887:.
854:.
463:.
20:)
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