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1805:
follows the old alignment of Route 21 through the city of
Hillsboro. It begins at the intersection of Route 21 and Highway B on the southern edge of the city, and continues north to the intersection of Route A and Old Route 21, where it ends. Business 21 is the only way one can now reach Route BB,
1893:
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340:
113:
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259:
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127:
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324:
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187:
745:
704:
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1264:
1218:
971:
332:
145:
1879:
1972:
1047:
561:
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89:
8:
1794:
1698:
1568:
1426:
1364:
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1119:
1002:
881:
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798:
477:
442:
173:
131:
1592:
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1317:
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1181:
1147:
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667:
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481:
213:
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117:
1935:
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183:
169:
155:
141:
1708:
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1177:
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921:
480:
was completed on
December 15, 2008 and Route 21 is currently freeway standard from
446:
281:
961:
957:
633:
159:
488:
have been approved, but funds are lacking to complete this part of the project.
1968:
839:
2011:
1897:
462:
300:
461:, which was named after the 19th century proprietor of the ferry across the
472:
was considered dangerous. As a result, the road was rerouted and built to
1891:
Jefferson County examines 'scenic byways' designation for routes 21 and M
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1651:
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476:
standards. Construction to reroute the highway to just south of
1911:
1566:
803:
Northern end of US 60 overlap; Southern end of Route 34 overlap
1734:
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
1960:
1774:
1421:
Northern end of Route B overlap; southern end of freeway
25:
491:
Route 21 from the
Meramec River to Route B, along with
1420:
1390:
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1006:
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601:
1813:
484:
to
Highway B. Plans to extend the freeway south to
1572:
2009:
1806:as the rerouting of Route 21 bypasses the road.
2043:Transportation in Washington County, Missouri
1992:
495:, make up the Jefferson County Scenic Byway.
2053:Transportation in St. Louis County, Missouri
2048:Transportation in Jefferson County, Missouri
2033:Transportation in Reynolds County, Missouri
1856:"ROUTE 21 IMPROVEMENTS (ROUTE B TO DESOTO)"
1999:
1985:
1756:
2028:Transportation in Carter County, Missouri
2023:Transportation in Ripley County, Missouri
1948:
457:). In the St. Louis area, it is known as
1967:This Missouri road-related article is a
2038:Transportation in Iron County, Missouri
1945:Template:Attached KML/Missouri Route 21
1573:Southbound exit and northbound entrance
2010:
1388:Route B begins / Business 21
498:
1860:Missouri Department of Transportation
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680:
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609:
573:
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202:Route M / Route MM in
1955:
1605:Interchange; northern end of freeway
13:
1832:List of state highways in Missouri
517:
453:state line (where it continues as
449:. Its southern terminus is at the
14:
2069:
1905:
673:Northern end of Route 142 overlap
602:Southern end of Route 142 overlap
1959:
1910:
1816:
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1259:Northern end of Route 47 overlap
1244:
1238:
1223:Southern end of Route 47 overlap
1208:
1202:
1168:
1152:Northern end of Route 32 overlap
1137:
1131:
1109:Southern end of Route 32 overlap
1097:
1091:
1065:
1059:
1042:Northern end of Route 72 overlap
1030:
1024:
1007:Northern end of Route 49 overlap
992:
986:
966:Southern end of Route 49 overlap
947:
941:
926:Southern end of Route 72 overlap
911:
905:
871:
865:
848:Northern end of Route 34 overlap
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823:
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735:
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694:
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84:
24:
1442:Route A / Business 21
1391:Southern end of Route B overlap
1884:
1873:
1848:
709:Northern end of US 160 overlap
638:Southern end of US 160 overlap
441:. Its northern terminus is at
63:188 mi (303 km)
1:
1842:
750:Southern end of US 60 overlap
670:east – Business District
512:
468:The section through northern
364:Missouri State Highway System
1971:. You can help Knowledge by
1837:List of highways numbered 21
7:
1809:
1795:Hillsboro, Jefferson County
10:
2074:
2018:State highways in Missouri
1954:
1493:Old Route 21 / Schenk Road
1326:
470:Jefferson County, Missouri
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1786:
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21:
16:State highway in Missouri
1949:KML is not from Wikidata
1740:
437:is a highway in eastern
1757:Hillsboro Business Spur
1919:at Wikimedia Commons
1521:Route MM /
1265:Washington State Park
2058:Missouri road stubs
1699:Lindbergh Boulevard
1619:Meramec Bottom Road
888:, Business District
566:Arkansas state line
499:Major intersections
102:Major intersections
1418:Route B north
1980:
1979:
1917:Missouri Route 21
1915:Media related to
1880:Scenic Byway Plan
1824:U.S. Roads portal
1800:
1799:
1780:Route 21 Business
1754:
1753:
1745:Incomplete access
459:Tesson Ferry Road
432:
431:
428:
427:
47:Route information
38:Tesson Ferry Road
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2001:
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832:
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250:
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226:
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212:
211:
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196:
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182:
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168:
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154:
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140:
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126:
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28:
19:
18:
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2008:
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1569:Meramec Heights
1567:Old Route 21 -
1548:Old Route 21 -
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1474:Old Route 21 -
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165:
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109:
101:
85:
76:Major junctions
33:
32:
29:
17:
12:
11:
5:
2071:
2061:
2060:
2055:
2050:
2045:
2040:
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2020:
2004:
2003:
1996:
1989:
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1978:
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1907:
1906:External links
1904:
1902:
1901:
1896:2012-07-15 at
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1727:(Gravois Road)
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1669:
1666:
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1593:Route 141
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1361:
1360:
1358:
1355:Route 110
1339:
1336:
1333:
1330:
1324:
1323:
1321:
1318:Route 104
1302:
1299:
1295:
1294:
1292:
1289:Route 104
1273:
1270:
1267:
1261:
1260:
1257:
1235:
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1224:
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1199:
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1125:
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1078:
1077:
1075:
1072:Route 221
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1053:
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1021:
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1009:
1008:
1005:
983:
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964:
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935:
932:
928:
927:
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902:
899:
896:
892:
891:
889:
878:Route 106
862:
859:
856:
850:
849:
846:
840:Clearwater Dam
820:
817:
814:
811:
805:
804:
801:
797:begins –
762:
759:
756:
752:
751:
748:
726:
723:
720:
717:
711:
710:
707:
685:
682:
679:
675:
674:
671:
668:Route 142
652:
649:
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640:
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636:
614:
611:
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604:
603:
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594:Route 142
578:
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410:
392:
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355:Highway system
352:
351:
348:
347:
318:
314:
313:
308:
304:
303:
298:
294:
293:
289:
288:
285:
284:
270:
269:North end
266:
265:
264:
263:
234:
220:
214:Route 141
206:
190:
176:
162:
148:
134:
120:
104:
98:
97:
82:
81:South end
78:
77:
73:
72:
69:
65:
64:
61:
57:
56:
52:Maintained by
49:
48:
44:
43:
40:
39:
35:
34:
30:
23:
22:
15:
9:
6:
4:
3:
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2019:
2016:
2015:
2013:
2002:
1997:
1995:
1990:
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1983:
1982:
1976:
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1970:
1965:
1962:
1958:
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1920:
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1899:
1898:archive.today
1895:
1892:
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1769:
1762:
1746:
1738:
1737:
1732:
1726:
1725:Route 30
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1706:
1700:
1696:
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1663:
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1653:
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1624:
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1527:House Springs
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1362:
1356:
1329:
1325:
1319:
1296:
1290:
1266:
1262:
1256:
1253:north –
1252:
1251:Route 47
1226:
1220:
1217:south –
1216:
1215:Route 47
1192:
1188:
1183:
1179:
1175:
1159:
1155:
1149:
1145:
1144:Route 32
1121:
1116:
1112:
1105:
1104:Route 32
1079:
1073:
1049:
1045:
1038:
1037:Route 72
1014:
1010:
1004:
1001:south –
1000:
999:Route 49
973:
969:
963:
959:
956:north –
955:
954:Route 49
929:
923:
919:
918:Route 72
893:
887:
883:
879:
855:
851:
845:
841:
837:
836:Route 34
810:
806:
800:
796:
795:Route 34
792:
753:
747:
743:
716:
712:
706:
702:
676:
669:
645:
641:
635:
631:
605:
599:
595:
569:
563:
560:south –
559:
532:
528:
504:
496:
494:
489:
487:
483:
479:
475:
471:
466:
464:
463:Meramec River
460:
456:
452:
448:
444:
440:
436:
423:
422:Route 22
413:
411:
408:
407:Route 20
398:
397:
393:
388:
385:
383:
380:
378:
375:
373:
370:
369:
366:
365:
361:
360:
358:
353:
349:
346:
342:
338:
334:
330:
326:
322:
319:
315:
312:
309:
305:
302:
301:United States
299:
295:
290:
286:
283:
279:
278:Route 30
271:
267:
261:
257:
253:
235:
233:
229:
221:
219:
218:Paulina Hills
215:
207:
205:
191:
189:
188:Mineral Point
185:
184:Route 47
177:
175:
171:
170:Route 32
163:
161:
157:
156:Route 49
149:
147:
143:
142:Route 72
135:
133:
129:
121:
119:
115:
107:
106:
105:
99:
95:
91:
83:
79:
74:
70:
66:
62:
58:
55:
50:
45:
41:
36:
27:
20:
1973:expanding it
1966:
1951:
1925:
1909:
1886:
1875:
1863:. Retrieved
1859:
1850:
1802:
1801:
1742:
1660:I-270 exit 2
1550:Shady Valley
1523:Route M
1174:Route 8
1146:east –
920:west –
880:west –
838:east –
793:west /
746:Poplar Bluff
744:east –
705:Poplar Bluff
703:east –
632:west –
596:west –
522:Destinations
490:
467:
458:
434:
433:
387:Supplemental
362:
71:1922–present
1803:Business 21
1458:Hayden Road
1219:Bonne Terre
701:US 160
630:US 160
558:AR 115
455:Highway 115
146:Centerville
114:US 160
90:AR 115
2012:Categories
1843:References
1695:US 67
1691:US 61
1687:US 50
1115:Washington
1048:Pilot Knob
791:US 60
742:US 60
562:Pocahontas
372:Interstate
337:Washington
262:in Concord
260:US 67
256:US 61
252:US 50
128:US 60
96:state line
1627:St. Louis
1427:Hillsboro
1365:Hillsboro
1328:Jefferson
1255:Richwoods
1191:Old Mines
1120:Caledonia
1003:Annapolis
882:Owls Bend
854:Ellington
799:Van Buren
482:Route 141
478:Hillsboro
345:St. Louis
341:Jefferson
174:Caledonia
132:Van Buren
1927:KML file
1894:Archived
1810:See also
1791:Location
1693: /
1689: /
1650: –
1595: –
1531:Barnhart
1525: –
1182:Leadwood
1176: –
1148:Bismarck
886:Eminence
844:Piedmont
809:Reynolds
644:Doniphan
598:Gatewood
509:Location
451:Arkansas
443:Route 30
439:Missouri
435:Route 21
329:Reynolds
317:Counties
311:Missouri
292:Location
258: /
254: /
204:Barnhart
118:Doniphan
94:Arkansas
31:Route 21
1865:25 July
1716:312.416
1713:194.126
1668:308.539
1665:191.717
1656:Memphis
1652:Chicago
1639:306.607
1636:190.517
1632:Concord
1616:299.119
1613:185.864
1610:
1584:298.483
1581:185.469
1578:
1564:297.012
1561:184.555
1558:
1545:290.231
1542:180.341
1539:
1508:286.034
1505:177.733
1490:281.896
1487:175.162
1484:
1476:Goldman
1471:277.733
1468:172.575
1465:
1455:272.359
1452:169.236
1449:
1434:270.135
1431:167.854
1402:266.422
1399:165.547
1396:
1372:265.827
1369:165.177
1338:259.714
1335:161.379
1332:
1301:242.869
1298:150.912
1272:240.634
1269:149.523
1234:236.591
1231:147.011
1228:
1198:228.664
1195:142.085
1165:218.731
1162:135.913
1127:199.031
1124:123.672
1087:192.164
1084:119.405
1081:
1055:177.144
1052:110.072
1020:173.756
1017:107.967
1013:Arcadia
982:158.121
976:
937:136.838
931:
901:124.061
895:
861:104.788
813:
755:
719:
678:
607:
571:
535:
493:Route M
486:De Soto
474:freeway
297:Country
232:Concord
92:at the
68:Existed
1709:Affton
1601:Arnold
1597:Fenton
1178:Potosi
1158:Potosi
979:98.252
934:85.027
922:Bunker
898:77.088
858:65.112
819:78.792
816:48.959
761:73.399
758:45.608
725:57.986
722:36.031
715:Carter
684:22.011
681:13.677
651:18.852
648:11.714
613:15.812
577:13.805
531:Ripley
506:County
447:Affton
325:Carter
321:Ripley
282:Affton
60:Length
1648:I-270
1074:north
962:Oates
958:Black
634:Alton
610:9.825
574:8.578
541:0.000
538:0.000
525:Notes
382:State
307:State
228:I-270
160:Hogan
130:near
54:MoDOT
1969:stub
1936:help
1932:edit
1867:2021
1501:Otto
1357:east
1320:west
1291:east
1106:west
1039:east
972:Iron
333:Iron
445:in
280:in
230:in
216:in
186:in
172:in
158:in
144:in
116:in
2014::
1934:•
1858:.
1654:,
1599:,
1529:,
1180:,
960:,
884:,
842:,
518:km
513:mi
465:.
414:→
399:←
377:US
343:,
339:,
335:,
331:,
327:,
323:,
2000:e
1993:t
1986:v
1975:.
1938:)
1930:(
1869:.
1701:)
1697:(
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