1030:
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366:
346:
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610:
780:
573:
28:
1293:
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622:
616:
579:
331:
311:
157:
152:
127:
122:
101:
730:
147:
1216:
952:
502:. The proposed highway was planned to cost $ 22.5 million (equivalent to $ 163.89 million in 2023), which included $ 15 million (equivalent to $ 109.26 million in 2023) for the Missouri River bridge. On the 1973 state highway map, the
497:
in 1968, the mileage which would eventually be manifested in over 1,400 miles (2,300 km) of
Interstate Highway was allocated to the states. Iowa received the smallest allocation, 0.5 miles (0.80 km), for the southern bypass of
460:
East of Dakota Avenue, I-129/US 20/US 75 travels south of South Sioux City and passes through rolling farmland. For the rest of I-129's length, the two directions of I-129/US 20/US 75 traffic are separated by a
557:
770:
Eastern end of US 20 and US 75 concurrencies; eastern terminus of I-129; southern terminus of US 75 Bus.; signed as exits 1A (south) and 1B (north); I-29 exits 144A-B
289:
658:
454:
1344:
1349:
756:
449:
while US 75 joins I-129 and US 20. One mile (1.6 km) later, I-129/US 20/US 75 intersect Dakota Avenue at a
1319:
405:. At 0.286 miles (0.460 km), I-129 is the shortest highway in the state of Iowa. All of the route's length is concurrent with
867:
1314:
1131:
279:
1324:
1201:
1093:
284:
1283:
1122:
321:
294:
1043:
934:
1196:
1162:
902:
979:
478:
450:
356:
1080:
1191:
1185:
1075:
503:
506:
showed the planned route on the state map for the first time. I-129 was opened on
November 22, 1976.
1248:
274:
1009:
662:
643:
426:
390:
108:
1157:
1151:
629:
625:
583:
438:
434:
422:
401:. Opened in 1976, I-129 is a 3.5-mile-long (5.6 km) route, running 3.21 miles (5.17 km) in
266:
134:
130:
104:
1029:
552:
494:
230:
1339:
1334:
1329:
1115:
1047:
430:
1170:
807:
803:
764:
752:
709:
666:
470:
442:
394:
242:
168:
164:
160:
1296:
1276:
1004:
760:
334:
314:
1092:
8:
874:
835:
1108:
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1100:
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1241:
811:
714:
633:
499:
482:
446:
398:
369:
349:
172:
638:
Western end of US 75 concurrency; signed as exits 1A (south) & 1B (north)
1022:
907:
676:
474:
466:
462:
983:
1308:
1137:
815:
410:
406:
191:
53:
589:
Western end of US 20 concurrency; continuation beyond western terminus
957:
441:. US 77 travels north through South Sioux City before ending at
939:
The
National System of Interstate Defense Highways: 1956–1996
692:
547:
402:
204:
727:
606:
569:
873:. Nebraska Department of Roads. 2015. p. 270. Archived from
473:
at an interchange. Due to the minimum amount of space along the
1042:
933:
1055:(Map). Ames: Iowa State Highway Commission. Sioux City inset
825:
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
704:
696:
209:
978:
481:. At I-29, US 20 and US 75 continue east around
912:. Ames: Iowa Department of Transportation. April 9, 2021
27:
1215:
465:
instead of a grassy median. The three routes cross the
409:(US 20) and most of its length is concurrent with
769:
724:
637:
603:
588:
567:
1130:
457:(US 20 Bus.) is designated along Dakota Avenue.
477:
banks, the I-29 interchange is a modified two-level
389:) is an auxiliary Interstate Highway which connects
929:
927:
1306:
81:
924:
1116:
1123:
1109:
972:
1345:Transportation in Dakota County, Nebraska
1097:
1013:. Carroll, Iowa. June 2, 1972. p. 2
897:
895:
1350:Transportation in Woodbury County, Iowa
1307:
1036:
862:
860:
858:
1104:
892:
868:"Nebraska Highway Reference Log Book"
776:
718:
690:
680:
656:
647:
593:
561:
65:Nebraska: 3.21 mi (5.17 km)
1094:Template:Attached KML/Interstate 129
416:
855:
671:Western terminus of US 20 Bus.
13:
531:
14:
1361:
935:Iowa Department of Transportation
1291:
1271:
1256:
1236:
1214:
1049:State of Iowa Transportation Map
1028:
797:
791:
784:
778:
746:
740:
734:
728:
691:Sergeant Floyd Memorial Bridge;
620:
614:
608:
577:
571:
364:
344:
329:
309:
155:
150:
145:
125:
120:
99:
67:Iowa: 0.286 mi (460 m)
63:3.50 mi (5.63 km)
26:
1320:Interstate Highways in Nebraska
997:
980:Federal Highway Administration
945:
451:partial cloverleaf interchange
429:, just west of exit 1, a
1:
1315:Auxiliary Interstate Highways
1044:Iowa State Highway Commission
848:
526:
504:Iowa State Highway Commission
455:U.S. Highway 20 Business
137:in South Sioux City, Nebraska
509:
16:Highway in Iowa and Nebraska
7:
1325:Interstate Highways in Iowa
984:"FHWA By Day - December 13"
10:
1366:
1010:Carroll Daily Times Herald
488:
469:and immediately intersect
427:South Sioux City, Nebraska
391:South Sioux City, Nebraska
109:South Sioux City, Nebraska
1228:
1212:
1146:
824:
819:
774:
721:
713:
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564:
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493:After the passage of the
302:
267:Interstate Highway System
262:
257:
253:
218:
197:
187:
182:
178:
141:
114:
95:
90:
80:
76:November 22, 1976–present
72:
59:
51:
46:
39:
23:
831:
820:Continuation beyond I-29
41:I-129 highlighted in red
1229:Browse numbered routes
903:"Road Network (Portal)"
495:Federal-Aid Highway Act
479:cloverstack interchange
425:on the western edge of
632: – Fair Grounds,
431:cloverleaf interchange
767:, Downtown Sioux City
765:Sioux Gateway Airport
1098:KML is from Wikidata
421:I-129 begins along
383:Interstate 129
116:Major intersections
52:Auxiliary route of
1005:"Hot off the Wire"
880:on January 2, 2017
558:Covington Precinct
1303:
1302:
1223:
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846:
845:
417:Route description
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47:Route information
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1260:
1259:
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1240:
1239:
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1225:
1218:
1140:
1134:
1133:Auxiliary routes
1125:
1118:
1111:
1102:
1101:
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969:
967:
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953:"Interstate 129"
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911:
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743:
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731:
663:South Sioux City
644:South Sioux City
624:
623:
619:
618:
617:
612:
611:
582:
581:
580:
575:
574:
533:
528:
514:
513:
485:and I-129 ends.
399:Sioux City, Iowa
372:
368:
367:
352:
348:
347:
337:
333:
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317:
313:
312:
304:
303:
173:Sioux City, Iowa
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129:
128:
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117:
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102:
83:
30:
21:
20:
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757:US 75 Bus.
747:
745:
741:
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735:
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729:
687:
682:
659:US 20 Bus.
657:Dakota Avenue (
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419:
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308:
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156:
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126:
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115:
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91:Major junctions
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42:
35:
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1023:Newspapers.com
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908:ESRI shapefile
891:
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847:
844:
843:
841:
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822:
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761:Council Bluffs
726:
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707:
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684:
679:
677:Missouri River
673:
672:
669:
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475:Missouri River
467:Missouri River
463:Jersey barrier
418:
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378:
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360:
353:
339:
338:
325:
318:
300:
299:
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292:
287:
282:
277:
271:
270:
260:
259:
258:Highway system
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37:
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33:Interstate 129
32:
25:
24:
15:
9:
6:
4:
3:
2:
1362:
1351:
1348:
1346:
1343:
1341:
1340:Interstate 29
1338:
1336:
1335:U.S. Route 75
1333:
1331:
1330:U.S. Route 20
1328:
1326:
1323:
1321:
1318:
1316:
1313:
1312:
1310:
1298:
1288:
1286:
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1281:
1278:
1268:
1267:
1263:
1262:Iowa 130
1253:
1251:
1250:
1246:
1243:
1242:Iowa 128
1233:
1232:
1227:
1217:
1203:
1200:
1199:
1198:
1195:
1193:
1190:
1189:
1188:
1187:
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1168:
1164:
1161:
1159:
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1153:
1149:
1148:
1145:
1141:
1139:Interstate 29
1135:
1126:
1121:
1119:
1114:
1112:
1107:
1106:
1103:
1095:
1086:
1082:
1078:
1077:
1051:
1050:
1045:
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1031:
1024:
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1000:
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954:
948:
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930:
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909:
904:
898:
896:
876:
869:
863:
861:
859:
854:
837:
829:
828:
823:
817:
813:
810:north –
809:
805:
773:
766:
762:
759:north –
758:
754:
716:
711:
706:
702:
698:
694:
678:
674:
668:
664:
661:east) –
660:
645:
641:
635:
631:
628:south /
627:
592:
585:
559:
554:
549:
545:
515:
507:
505:
501:
496:
486:
484:
480:
476:
472:
468:
464:
458:
456:
452:
448:
444:
440:
436:
432:
428:
424:
414:
412:
408:
407:U.S. Route 20
404:
400:
396:
392:
388:
384:
371:
370:Iowa 130
361:
359:
358:
354:
351:
350:Iowa 128
341:
340:
336:
326:
324:
323:
319:
316:
306:
305:
301:
296:
293:
291:
288:
286:
283:
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278:
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273:
272:
269:
268:
264:
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261:
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244:
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229:
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208:
206:
203:
202:
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196:
193:
192:United States
190:
186:
181:
177:
174:
170:
166:
162:
144:
142:East end
140:
136:
132:
119:
113:
110:
106:
98:
96:West end
94:
89:
85:
79:
75:
71:
62:
58:
55:
50:
45:
38:
29:
22:
19:
1282:
1247:
1186:South Dakota
1184:
1177:
1169:
1150:
1074:
1057:. Retrieved
1048:
1038:
1021:– via
1015:. Retrieved
1008:
999:
987:. Retrieved
974:
964:February 27,
962:. Retrieved
956:
947:
938:
914:. Retrieved
882:. Retrieved
875:the original
833:
806:east /
539:Destinations
492:
459:
420:
386:
382:
381:
355:
320:
265:
237:
225:
86:Entire route
18:
958:Google Maps
836:Concurrency
667:Dakota City
1309:Categories
884:January 8,
849:References
812:Fort Dodge
808:US 75
804:US 20
715:Sioux City
634:Sioux City
630:US 77
626:US 75
584:US 20
500:Sioux City
483:Sioux City
447:Sioux City
439:US 77
435:US 75
423:US 20
411:US 75
169:US 75
165:US 20
135:US 77
131:US 75
105:US 20
1173:–Nebraska
1059:August 1,
1017:August 9,
989:August 1,
916:April 18,
510:Exit list
280:Auxiliary
1197:Business
1163:Business
1152:Missouri
1076:KML file
1046:(1973).
838:terminus
755: /
710:Woodbury
693:Nebraska
548:Nebraska
523:Location
403:Nebraska
290:Business
285:Suffixed
243:Woodbury
219:Counties
205:Nebraska
183:Location
167: /
163: /
133: /
955:(Map).
816:Le Mars
489:History
188:Country
73:Existed
553:Dakota
520:County
295:Future
231:Dakota
198:States
60:Length
1297:N-133
1277:N-128
1053:(PDF)
878:(PDF)
871:(PDF)
722:0.460
719:0.286
688:0.000
683:0.000
599:0.61–
594:0.38–
542:Notes
517:State
433:with
393:, to
387:I-129
335:N-133
315:N-128
1171:Iowa
1085:help
1081:edit
1061:2010
1019:2014
991:2010
966:2010
918:2021
886:2017
753:I-29
705:Iowa
699:line
697:Iowa
686:5.17
681:3.21
651:2.41
648:1.50
601:0.64
596:0.40
586:west
565:0.00
562:0.00
536:Exit
471:I-29
443:I-29
437:and
395:I-29
275:Main
210:Iowa
161:I-29
54:I-29
1202:229
1192:229
1178:129
1158:229
1136:of
445:in
397:in
171:in
107:in
82:NHS
1311::
1289:→
1284:NE
1269:←
1254:→
1249:IA
1234:←
1083:•
1007:.
982:.
937:.
926:^
894:^
857:^
814:,
763:,
665:,
532:km
527:mi
453:.
413:.
362:→
357:IA
342:←
327:→
322:NE
307:←
238:IA
226:NE
1124:e
1117:t
1110:v
1087:)
1079:(
1063:.
1025:.
993:.
968:.
941:.
920:.
910:)
906:(
888:.
725:1
695:–
654:2
604:1
385:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
