714:
1171:
1089:
812:
606:
1177:
1095:
1552:
1489:
1219:
522:
504:
264:
1546:
1272:
1158:
1076:
1339:
1164:
1082:
923:
1928:
46:
949:
936:
993:
489:
471:
1520:
1345:
955:
942:
929:
893:
888:
818:
259:
229:
201:
177:
172:
167:
139:
745:(IDOT) concluded a different route number would be necessary for the eastern leg of the beltway. While I-870 was initially considered, informal use of I-255 in contemporary local media coverage led to its widespread adoption. By 1980, IDOT announced that the eastern portion of the St. Louis beltway was to be designated as I-255.
1424:
1419:
1333:
851:
224:
219:
196:
134:
2084:
740:
Both the western (I-270) and eastern (I-255) portions of the
Interstate loop around St. Louis were originally designated as I-270. However, the route that Illinois selected ("Corridor 413") included an interchange in Pontoon Beach between the new beltway (running north and south parallel to the
736:
Since that routing was to go through the
American Bottoms, archaeological investigations had to be conducted prior to any construction, which would later become known as the FAI 270 Series. When Cahokia Mounds was designated in the federal register, an alternative alignment for I-255 from I-64
697:, its original intended terminus. North of this interchange, the control city for I-255 changes from "Chicago" to "To I-270". In the 1980s, I-255 was extended approximately five miles (8.0 km) north to meet I-270 in
701:, its current terminus. While the I-255 designation ends at the I-270 interchange, the freeway continues north and west (parallelling the bend in the Mississippi River) for approximately 23 miles (37 km) as
741:
Mississippi River) and the existing beltway (running east and west to a terminus at I-55/I-70). As such, two intersecting
Interstate Highways would have carried the same route number. As such, the
639:
Once it crosses the
Mississippi River and enters Illinois, I-255 is signed as a northāsouth highway. It is considerably newer than the Missouri section; it was constructed in the 1980s. At the
366:
593:, all of which are all cosigned together. The next junction is another one with I-270, which is the northern terminus of I-255. After that, the limited-access freeway continues on as
2160:
2155:
2145:
2150:
737:
to I-55/70 was selected. This delayed construction of I-255 until the late 1970s, making it the last
Interstate Highway in metropolitan St. Louis to be built.
705:. The decision to not extend the I-255 designation to the new freeway reflects the fact that state and not federal funds were used to pay for construction.
2135:
2130:
632:
traffic across the
Mississippi River. The roadway was upgraded between 2002 and 2004. Repairs included both new pavement and the replacement of the
2027:
1994:
430:
395:
1523:
822:
267:
146:
2165:
2120:
1619:
1968:
1853:
742:
356:
83:
79:
616:
I-255's counterclockwise terminus is at an interchange with I-55 and I-270 in
Mehlville, Missouri. The beltway is designated as I-270 (with
1918:
361:
2140:
1959:
675:
671:. Given its proximity to the airport, this section of I-255 features shorter light poles to better accommodate takeoffs and landings.
558:
405:
371:
435:
1882:
1620:"Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of December 31, 2018"
2071:
2042:
733:
when plans surfaced in the 1950s Yellow Book. It was originally designed to be a four lane highway but was changed to six lanes.
440:
1759:
569:. It shares its southern terminus with I-270 at the junction with I-55; I-270 and I-255 go to the west and east, respectively.
400:
686:. This section of freeway opened in 1986. Traffic can enter and exit I-255 at an interchange with Collinsville Road (formerly
1627:
422:
387:
450:
410:
351:
1999:
1988:
1371:
1117:
791:
668:
320:
308:
31:
2056:
2050:
2021:
2007:
1932:
1435:
1431:
1427:
1353:
1349:
1038:
971:
967:
959:
900:
896:
854:
687:
679:
625:
590:
586:
582:
578:
343:
240:
236:
232:
212:
208:
204:
188:
184:
180:
142:
1403:
1375:
1308:
1293:
1283:
1193:
652:
324:
1821:
1457:
1050:
698:
316:
275:
2125:
1952:
1496:
1382:
694:
244:
585:, where US 50 breaks off and goes east, and then further north there is a junction with I-55 again,
1531:
1527:
1500:
1235:
826:
713:
617:
624:
as the control city) east of this interchange. The section of I-255 east from this interchange to the
1361:
1317:
1279:
722:
683:
1357:
963:
872:
867:
I-55 exit 196; signed as exits 1A (south) & 1B (north); westbound exits and eastbound entrances
858:
840:
150:
2037:
1793:
1732:
1681:
1592:
1580:
1556:
1492:
1222:
1107:
1055:
996:
862:
730:
702:
633:
594:
525:
507:
492:
474:
271:
1945:
1909:
1439:
1275:
1256:
1226:
1203:
1189:
1023:
836:
796:
664:
648:
574:
554:
565:
around the central portion of the bi-state metro area; a majority of I-255 is located on the
1649:
1185:
1181:
1103:
1099:
656:
640:
610:
445:
1846:
1708:
1806:
1745:
1694:
1560:
2066:
2013:
1137:
1122:
726:
644:
2114:
1974:
1763:
643:
interchange, I-255 turns sharply to the north. It briefly overlaps with IL 3 in
629:
570:
550:
294:
71:
1937:
1443:
660:
546:
605:
1654:(Map) (1989ā1990 ed.). . Springfield: Illinois Department of Transportation
566:
562:
1447:
1927:
1452:
I-55/I-70 exit 10; signed as exits 25A (north/east) & 25B (south/west)
1762:. Illinois Transportation Archaeological Research Program. Archived from
1045:
786:
621:
620:
as the control city) west of this interchange and as I-255 east (with
581:, enters Illinois, and then turns northeast. There is a junction with
977:
West end of US 50 overlap; westbound exit and eastbound entrance
17:
1330:
1154:
1072:
919:
712:
604:
45:
2083:
1941:
1536:
I-270 exit 7A westbound, 7 eastbound; counterclockwise terminus
885:
848:
597:(IL 255). I-255 is 30.82 miles (49.60 km) in length.
659:
was constructed in the 1990s and provides motorist access to
573:(US 50) joins I-255 at Lemay Ferry Road. It crosses the
1570:
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
1917:
1905:
1900:
1365:
1327:
1197:
1151:
1111:
1069:
976:
916:
1847:"Federal-aid Freeway System - Supplemental Freeways"
1826:(Map). . Springfield: Illinois Division of Highways
905:
882:
866:
845:
379:
334:
300:
290:
285:
253:
156:
128:
123:
113:
105:
97:
89:
64:
41:
674:North of Sauget, I-255 traverses a portion of the
1018:Orientation changes from east-west to north-south
114:
1648:Illinois Department of Transportation (1989).
721:I-255 route was proposed from I-55/I-244 near
647:. After Dupo, I-255 turns northeast, skirting
1953:
1873:IDOT FAI-270/FAP 413 Draft EIS Volume 1, 1983
1760:"FAI-270 Series: American Bottom Archaeology"
8:
2161:Transportation in St. Louis County, Missouri
2156:Transportation in St. Clair County, Illinois
1366:I-64 exit 7; north end of US 50 overlap
831:Clockwise terminus; continuation beyond I-55
690:) just east of the Fairmont Park Racetrack.
693:I-255 meets I-55/I-70 at an interchange in
2146:Transportation in Madison County, Illinois
1960:
1946:
1938:
752:
463:
2151:Transportation in Monroe County, Illinois
1922:
1288:Signed as exits 17A (east) and 17B (west)
717:The Yellow Book plan in Greater St. Louis
1610:
1834:– via Illinois Digital Archives.
1820:Illinois Division of Highways (1968).
1802:
1791:
1741:
1730:
1690:
1679:
1662:– via Illinois Digital Archives.
628:was first built in the 1960s to carry
38:
1854:Illinois Department of Transportation
1542:
1517:
1508:
1486:
1477:
1470:
1461:
1416:
1407:
1395:
1386:
1321:
1306:
1297:
1269:
1260:
1248:
1239:
1216:
1207:
1145:
1135:
1126:
1059:
1037:
1027:
1014:
1005:
990:
981:
910:
906:Eastbound exit and westbound entrance
876:
808:
800:
743:Illinois Department of Transportation
655:. An interchange at Mousette Lane in
30:For the former I-255 in Memphis, see
7:
1919:Template:Attached KML/Interstate 255
1198:North end of IL 3 / GRR overlap
1112:South end of IL 3 / GRR overlap
1136:S. Main Street/Old Route 3 ā
770:
676:Frank Holten State Recreation Area
93:30.82 mi (49.60 km)
25:
1845:Dees, Dan C. (November 1, 1974).
2082:
1926:
1550:
1544:
1518:
1487:
1422:
1417:
1343:
1337:
1331:
1270:
1217:
1175:
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1156:
1093:
1087:
1080:
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991:
953:
947:
940:
934:
927:
921:
891:
886:
849:
816:
810:
520:
502:
487:
469:
262:
257:
227:
222:
217:
199:
194:
175:
170:
165:
137:
132:
44:
27:Highway in Illinois and Missouri
2136:Interstate Highways in Missouri
2131:Interstate Highways in Illinois
1565:Continuation north beyond I-270
1628:Federal Highway Administration
1:
2166:Beltways in the United States
2121:Auxiliary Interstate Highways
1863:– via MidwestRoads.com.
1823:Illinois Official Highway Map
1278:(New Missouri Avenue) ā
765:
423:Illinois State Highway System
388:Missouri State Highway System
1559:north (Alton Bypass) ā
1618:Price, Jeff (May 6, 2019).
1225:(Camp Jackson Road) ā
729:near the intersection with
678:before an interchange with
2182:
2141:Roads in Greater St. Louis
1786:Edwardsville Intelligencer
1044:
669:St. Louis Downtown Airport
32:Interstate 255 (Tennessee)
29:
2091:
2080:
1983:
1883:I-270/870 proposed routes
1624:Route Log and Finder List
1569:
1564:
1540:
1535:
1514:
1511:
1504:
1483:
1480:
1473:
1467:
1464:
1456:
1451:
1413:
1410:
1402:
1398:
1392:
1389:
1381:
1370:
1324:
1316:
1312:
1303:
1300:
1292:
1287:
1266:
1263:
1255:
1251:
1245:
1242:
1234:
1230:
1213:
1210:
1202:
1148:
1141:
1132:
1129:
1121:
1116:
1064:
1054:
1049:
1039:Jefferson Barracks Bridge
1032:
1022:
1017:
1011:
1008:
1001:
987:
984:
913:
879:
871:
835:
830:
806:
803:
795:
790:
785:
780:
777:
774:
769:
764:
761:
758:
755:
626:Jefferson Barracks Bridge
579:Jefferson Barracks Bridge
462:
458:
418:
383:
344:Interstate Highway System
339:
330:
281:
77:
69:
57:
1588:
1576:
59:I-255 highlighted in red
667:baseball team) and the
718:
613:
1935:at Wikimedia Commons
716:
608:
1923:KML is from Wikidata
1651:Illinois Highway Map
1307:State Street ā
1710:St. Louis, Missouri
1676:. October 24, 1986.
1471:Horseshoe Lake Road
964:Lindbergh Boulevard
725:to I-55/70 west of
539:Interstate 255
213:Washington Park, IL
158:Major intersections
70:Auxiliary route of
974:(Lemay Ferry Road)
903:(Lemay Ferry Road)
719:
614:
595:Illinois Route 255
2108:
2107:
1931:Media related to
1801:Missing or empty
1740:Missing or empty
1727:. April 29, 1977.
1713:(Map). 1:500,000.
1689:Missing or empty
1602:
1601:
1593:Incomplete access
1396:Collinsville Road
1024:Mississippi River
665:Gateway Grizzlies
601:Route description
575:Mississippi River
555:Greater St. Louis
536:
535:
532:
531:
276:Pontoon Beach, IL
109:Completed by 1989
65:Route information
16:(Redirected from
2173:
2086:
1977:
1971:
1970:Auxiliary routes
1962:
1955:
1948:
1939:
1930:
1913:
1885:
1880:
1874:
1871:
1865:
1864:
1862:
1860:
1851:
1842:
1836:
1835:
1833:
1831:
1817:
1811:
1810:
1804:
1799:
1797:
1789:
1782:
1776:
1775:
1773:
1771:
1766:on July 20, 2011
1756:
1750:
1749:
1743:
1738:
1736:
1728:
1721:
1715:
1714:
1705:
1699:
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1670:
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1663:
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1645:
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1638:
1636:
1634:
1615:
1595:
1589:
1584:
1577:
1555:
1554:
1553:
1548:
1547:
1522:
1521:
1491:
1490:
1426:
1425:
1421:
1420:
1348:
1347:
1346:
1341:
1340:
1335:
1334:
1274:
1273:
1221:
1220:
1186:Great River Road
1180:
1179:
1178:
1173:
1172:
1167:
1166:
1165:
1160:
1159:
1104:Great River Road
1098:
1097:
1096:
1091:
1090:
1085:
1084:
1083:
1078:
1077:
999:(Telegraph Road)
995:
994:
958:
957:
956:
951:
950:
945:
944:
943:
938:
937:
932:
931:
930:
925:
924:
895:
894:
890:
889:
853:
852:
821:
820:
819:
814:
813:
772:
767:
753:
528:
524:
523:
510:
506:
505:
495:
491:
490:
477:
473:
472:
464:
266:
265:
261:
260:
245:Collinsville, IL
231:
230:
226:
225:
221:
220:
203:
202:
198:
197:
191:in Mehlville, MO
179:
178:
174:
173:
169:
168:
159:
141:
140:
136:
135:
116:
48:
39:
21:
2181:
2180:
2176:
2175:
2174:
2172:
2171:
2170:
2111:
2110:
2109:
2104:
2087:
2078:
1979:
1975:
1969:
1966:
1924:
1921:
1916:
1915:
1914:
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1894:
1889:
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1877:
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1868:
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1856:
1849:
1844:
1843:
1839:
1829:
1827:
1819:
1818:
1814:
1800:
1790:
1788:. July 9, 1973.
1784:
1783:
1779:
1769:
1767:
1758:
1757:
1753:
1739:
1729:
1725:Alton Telegraph
1723:
1722:
1718:
1707:
1706:
1702:
1688:
1678:
1674:Alton Telegraph
1672:
1671:
1667:
1657:
1655:
1647:
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1632:
1630:
1617:
1616:
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1607:
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1587:
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1519:
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1218:
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1174:
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1163:
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1157:
1155:
1094:
1092:
1088:
1086:
1081:
1079:
1075:
1073:
1066:
1061:
1034:
1029:
992:
954:
952:
948:
946:
941:
939:
935:
933:
928:
926:
922:
920:
892:
887:
850:
817:
815:
811:
809:
751:
711:
609:I-255, west of
603:
521:
519:
503:
501:
488:
486:
470:
468:
311:
263:
258:
249:
228:
223:
218:
200:
195:
176:
171:
166:
157:
138:
133:
124:Major junctions
60:
53:
52:
49:
35:
28:
23:
22:
15:
12:
11:
5:
2179:
2177:
2169:
2168:
2163:
2158:
2153:
2148:
2143:
2138:
2133:
2128:
2123:
2113:
2112:
2106:
2105:
2103:
2102:
2099:
2096:
2092:
2089:
2088:
2081:
2079:
2077:
2076:
2075:
2074:
2069:
2064:
2059:
2047:
2046:
2045:
2040:
2035:
2030:
2018:
2017:
2016:
2004:
2003:
2002:
1997:
1984:
1981:
1980:
1967:
1965:
1964:
1957:
1950:
1942:
1933:Interstate 255
1897:
1896:
1895:
1893:
1892:External links
1890:
1887:
1886:
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1866:
1837:
1812:
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1665:
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1412:
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1397:
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1391:
1388:
1385:
1380:
1372:St. Clair
1368:
1367:
1364:
1329:
1326:
1323:
1320:
1314:
1313:
1311:
1309:East St. Louis
1305:
1302:
1299:
1296:
1294:East St. Louis
1290:
1289:
1286:
1284:East St. Louis
1268:
1265:
1262:
1259:
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1241:
1238:
1232:
1231:
1229:
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1209:
1206:
1200:
1199:
1196:
1194:East St. Louis
1153:
1150:
1147:
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1142:
1140:
1134:
1131:
1128:
1125:
1120:
1114:
1113:
1110:
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1041:
1036:
1031:
1026:
1020:
1019:
1016:
1013:
1010:
1007:
1003:
1002:
1000:
997:Route 231
989:
986:
983:
979:
978:
975:
918:
915:
912:
908:
907:
904:
884:
881:
878:
875:
869:
868:
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833:
832:
829:
807:
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802:
799:
794:
789:
783:
782:
779:
776:
773:
768:
763:
760:
757:
750:
747:
727:Cahokia Mounds
710:
707:
653:East St. Louis
634:Telegraph Road
602:
599:
534:
533:
530:
529:
516:
511:
497:
496:
493:Route 265
483:
478:
475:Route 254
460:
459:
456:
455:
454:
453:
448:
443:
438:
433:
427:
426:
416:
415:
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381:
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369:
364:
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348:
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337:
336:
335:Highway system
332:
331:
328:
327:
302:
298:
297:
292:
288:
287:
283:
282:
279:
278:
255:
254:North end
251:
250:
248:
247:
215:
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162:
160:
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153:
130:
126:
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121:
120:
117:
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94:
91:
87:
86:
78:Maintained by
75:
74:
67:
66:
62:
61:
58:
55:
54:
51:Interstate 255
50:
43:
42:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
2178:
2167:
2164:
2162:
2159:
2157:
2154:
2152:
2149:
2147:
2144:
2142:
2139:
2137:
2134:
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567:Illinois half
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560:
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1987:
1925:
1899:
1878:
1869:
1857:. Retrieved
1840:
1830:November 24,
1828:. Retrieved
1822:
1815:
1803:|title=
1785:
1780:
1768:. Retrieved
1764:the original
1754:
1742:|title=
1724:
1719:
1709:
1703:
1691:|title=
1673:
1668:
1658:November 24,
1656:. Retrieved
1650:
1643:
1631:. Retrieved
1623:
1613:
1590:
1578:
1528:Indianapolis
1497:Granite City
1444:Indianapolis
1383:Collinsville
1356:east ā
778:Destinations
739:
735:
720:
695:Collinsville
692:
673:
661:GCS Ballpark
638:
615:
547:bypass route
542:
538:
537:
513:
480:
421:
411:Supplemental
386:
342:
312:
304:
119:Entire route
101:1986āpresent
36:
1581:Concurrency
1557:IL 255
1532:Kansas City
1501:Glen Carbon
1493:IL 162
1379:county line
1236:Centreville
1223:IL 157
827:Kansas City
731:IL 111
703:IL 255
618:Kansas City
526:IL 255
508:IL 251
272:IL 255
2115:Categories
1605:References
1436:US 40
1362:Louisville
1354:US 50
1318:Caseyville
1280:Belleville
1276:IL 15
972:US 67
968:US 61
960:US 50
901:US 67
897:US 61
723:Green Park
688:US 40
684:Caseyville
630:US 50
591:US 40
431:Interstate
396:Interstate
241:US 40
209:US 50
189:US 67
185:US 61
181:US 50
1989:Tennessee
1859:March 12,
1794:cite news
1770:March 12,
1733:cite news
1682:cite news
1633:March 23,
1448:St. Louis
1358:St. Louis
1182:IL 3
1118:St. Clair
1100:IL 3
1015:Koch Road
873:Mehlville
859:St. Louis
841:Mehlville
792:St. Louis
749:Exit list
641:IL 3
611:IL 3
357:Auxiliary
321:St. Clair
309:St. Louis
2095:Proposed
2072:Business
2051:Illinois
2043:Business
2022:Missouri
2008:Arkansas
1901:KML file
1583:terminus
1526: ā
1495: ā
1438: ā
1434: /
1430: /
1352: /
1108:Columbia
1056:Columbia
1046:Illinois
970: /
899: /
857: ā
787:Missouri
762:Location
682:west of
636:bridge.
446:Tollways
367:Business
362:Suffixed
301:Counties
286:Location
270: /
239: /
235: /
207: /
187: /
183: /
145: /
2101:Unbuilt
1440:Chicago
1404:Madison
1376:Madison
1257:Alorton
1227:Cahokia
1204:Cahokia
1190:Cahokia
863:Memphis
837:Concord
797:Concord
709:History
649:Cahokia
622:Chicago
577:on the
545:) is a
325:Madison
291:Country
106:History
98:Existed
2098:Former
1051:Monroe
962:west (
759:County
657:Sauget
589:, and
451:Scenic
372:Future
317:Monroe
90:Length
1850:(PDF)
1561:Alton
1524:I-270
1512:49.60
1509:30.82
966:) to
823:I-270
781:Notes
756:State
559:I-270
543:I-255
441:State
406:State
268:I-270
147:I-270
84:MoDOT
18:I-255
1910:help
1906:edit
1861:2022
1832:2022
1807:help
1772:2022
1746:help
1695:help
1660:2022
1635:2021
1481:47.0
1478:29.2
1465:41.8
1462:26.0
1432:I-70
1428:I-55
1411:39.9
1408:24.8
1390:38.0
1387:23.6
1350:I-64
1325:32.3
1322:20.1
1301:29.9
1298:18.6
1264:26.9
1261:16.7
1243:24.1
1240:15.0
1211:20.9
1208:13.0
1149:17.1
1146:10.6
1138:Dupo
1130:14.8
1123:Dupo
1067:11.1
1065:9.7ā
1060:6.0ā
1033:5.6ā
1028:3.5ā
880:0.80
855:I-55
843:line
804:0.00
801:0.00
775:Exit
680:I-64
651:and
645:Dupo
587:I-70
583:I-64
563:loop
551:I-55
352:Main
237:I-70
233:I-55
205:I-64
143:I-55
82:and
80:IDOT
72:I-55
2067:355
2062:255
2057:155
2038:755
2033:255
2028:155
2014:555
2000:255
1995:155
1973:of
1127:9.2
1062:6.9
1035:6.4
1030:4.0
1009:5.1
1006:3.2
985:3.5
982:2.2
914:1.9
911:1.2
877:0.5
553:in
549:of
274:in
243:in
211:in
149:in
115:NHS
2117::
1908:ā¢
1852:.
1798::
1796:}}
1792:{{
1737::
1735:}}
1731:{{
1686::
1684:}}
1680:{{
1626:.
1622:.
1530:,
1515:30
1499:,
1484:29
1468:26
1446:,
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1414:25
1393:24
1360:,
1328:20
1304:19
1282:,
1267:17
1246:15
1214:13
1192:,
1152:10
917:1C
883:1B
861:,
771:km
766:mi
518:ā
514:IL
500:ā
485:ā
481:MO
467:ā
436:US
401:US
323:,
319:,
315::
313:IL
307::
305:MO
1961:e
1954:t
1947:v
1912:)
1904:(
1809:)
1805:(
1774:.
1748:)
1744:(
1697:)
1693:(
1637:.
1374:ā
1133:9
1070:6
1012:3
988:2
846:1
839:ā
541:(
34:.
20:)
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