423:
472:
621:
north to
Sabillasville around 1923. The highway was completed to the Pennsylvania state line at Blue Ridge Summit, using what are now Naylor Road and Old Sabillasville Road, around 1927. The pre-1910 portion of MD 81 in Washington County was reconstructed and extended west toward Pen Mar in 1930. Military Road was constructed around 1933 between Highfield and Fort Ritchie. The eastern end of Military Road at the Frederick–Washington county line was tied into a relocation of MD 81 between Sabillasville and Blue Ridge Summit that was completed in 1936. This bypass included an underpass of the Western Maryland Railway at Sabillasville and resulted in the highway no longer entering Pennsylvania; the old alignment of MD 81 was designated MD 625.
504:
gorge upstream between Piney
Mountain to the north and Catoctin Mountain to the south; the highway passes under the rail line twice. At Foxville Deerfield Road, MD 550 leaves Owens Creek and its gorge and passes through the Harbaugh Valley, where the highway crosses Friends Creek. After passing through the unincorporated village of Sabillasville and intersecting Bentzel Road on the north side of the village, the highway leaves the valley and ascends the eastern flank of South Mountain. MD 550 passes under a curve of the railroad and meets the ends of Old Sabillasville Road and Cullen Drive west of the Victor Cullen Center. The Victor Cullen Center is a state
409:). MD 81 was extended west to Fort Ritchie in the mid-1930s. MD 550 was constructed from Libertytown to Woodsboro in the mid to late 1930s. A second disjoint section of the state highway was built from Creagerstown to Thurmont in the late 1930s. The two segments of MD 550 were united when the designation was assigned to the highway between Woodsboro and Creagerstown in the mid-1950s. MD 550 was extended northwest from Thurmont to Fort Ritchie, assuming all of MD 81, in the late 1970s.
40:
468:, which preserves a pair of church buildingsâthe early 20th-century St. Johnâs Evangelical Lutheran Church and the 19th-century building of the defunct St. Johnâs Reformed Churchâas well as the first churchâs parish house and a cemetery. MD 550 continues northwest as Creagerstown Road to the hamlet of Jimtown; the highway intersects Moser Road and Hessong Bridge at a four-legged intersection and turns north onto Jimtown Road toward Thurmont.
568:
957:
885:
753:
720:
311:
296:
177:
138:
852:
819:
679:
152:
115:
951:
879:
747:
714:
95:
846:
813:
1038:
911:
166:
483:(Rocky Ridge Road). The two state highways run concurrently northwest toward downtown Thurmont on Main Street. In the center of town, at Water Street, MD 77 continues west on Main Street while MD 550 turns north onto Church Street, which passes under the Main Line of the Maryland Midland Railway and meets the south end of
616:
east and north through
Creagerstown to near Loys Station south of MD 77. The portion of MD 72 through Creagerstown was built in 1926. The first section of MD 550 proper was 1 mile (1.6 km) of concrete road built east from Woodsboro in 1933. MD 550 was extended east to Cabbage Run between 1933
503:
MD 550 heads northwest as
Sabillasville Road into the Blue Ridge Mountains, which comprise extensively forested, steep, and well-dissected ridges separated by deep, narrow valleys with patches of farmland. The highway crosses Owens Creek and parallels the Maryland Midland Railway through the creekâs
548:
rail line at grade, turns from McAfee Hill Road onto Pen Mar Road, and passes under the railroad and by Lake Royer. MD 550 reaches its northern terminus west of the lake at the edge of Camp Louise, a girls' summer camp founded in 1922; Pen Mar Road continues as a county highway toward the community
455:
MD 550 continues northwest through the
Piedmont lowlands, which contain wide and undulating ridges, broad nearly level valleys, limited local relief, and a mosaic of farms, houses, and woodland. North of the route's bridge across the Monocacy River, the highway parallels Pennterra Manor Lane, which
620:
The first section of what would become MD 81 was paved as a state-aid road from the
Pennsylvania state line south along Warren Avenue and Cascade Road through Highfield and Cascade by 1910. The main portion of MD 81 was constructed from Emmitsburg Road (which later became US 15 and is now MD 806)
434:
of
Libertytown and heads northwest as Woodsboro Road. The highway passes through the Piedmont uplands, a region of rounded hills, low ridges, relatively high relief, irregular plains, and narrow valleys with a mix of farms and forests. MD 550 crosses Cabbage Run and Dorcas Branch, follows Dorcas
624:
In 1956, MD 72 was removed from the state highway system. MD 550 was extended southeast through
Creagerstown to Woodsboro to connect with the Woodsboro–Libertytown section. MD 550 was extended through Thurmont, west along MD 77 and north along MD 806, and assumed all of MD 81 in 1977.
443:
on
Woodsboro Pike on the east side of the town; Liberty Road heads west from the intersection toward the center of town. MD 550 turns west onto WoodsboroâCreagerstown Road, which immediately intersects the north end of Main Street (MD 194A). The state highway intersects the
531:
state line. The highway continues as Fort
Ritchie Road, which curves southwest through the unincorporated communities of Highfield and Cascade, where south of Royer Road the routeâs name changes to Military Road. At the entrance to the former
471:
607:
MD 550 was constructed in two main sections: MD 550 between Libertytown and Thurmont, and MD 81 from Thurmont to Fort Ritchie. The first section of the Libertytown–Thurmont portion of MD 550 was constructed as a segment of former
617:
and 1935. A second section of MD 550 was started from MD 77 east of Thurmont towards Creagerstown in 1938. This western section was completed in 1939, the same year the eastern section was completed between Woodsboro and Libertytown.
1501:
625:
Construction on MD 194's bypass of Woodsboro was started in 1995. When the bypass was completed in 1997, MD 550 was removed from the center of Woodsboro to its present alignment on the northern and eastern sides of town.
464:, before reaching the unincorporated village of Creagerstown. The routeâs name changes to Creagerstown Road at Old Frederick Road at the south end of village, and at Blacks Mill Road the road passes to the east of the
422:
1497:
1524:
1368:
1268:
465:
1756:
1877:
1857:
1817:
1736:
1692:
1672:
1625:
1602:
1552:
517:
98:
1953:
1948:
1837:
524:
391:
1919:
461:
264:
435:
Branch through a gap in Laurel Hill, and enters the town of Woodsboro just after crossing Israel Creek. MD 550 turns north and
613:
445:
65:
401:
MD 550 was built in two main sections. The highway from Thurmont to Blue Ridge Summit was constructed in the mid-1920s as
1943:
457:
274:
269:
487:(Emmitsburg Road). At the northern edge of Thurmont, the state highway meets US 15 (Catoctin Mountain Highway) at a
513:
1906:
1901:
1395:
1243:
395:
279:
1188:
1155:
1163:(Map). 1:12,000. Baltimore: Maryland State Highway Administration. §§ B10C, B10A, B9B, A9D, A9B, A9A
932:
359:
237:
1343:"National Register of Historic Places Registration: St. John's Church at Creagerstown Historic District"
661:
355:
233:
27:
1469:"National Register of Historic Places Registration: Victor Cullen Center, Old Administration Building"
1420:
1400:(Map) (2019 ed.). 1:24,000. 7.5 Minute Series (The National Map). United States Geological Survey
1248:(Map) (2019 ed.). 1:24,000. 7.5 Minute Series (The National Map). United States Geological Survey
1071:
914:
379:
169:
20:
922:
449:
1468:
1342:
508:
originally constructed in the first decade of the 20th century as the stateâs first tuberculosis
375:
256:
1442:
1316:
1291:
1778:
Map of Maryland Showing State Road System: State Aid Roads and Improved County Road Connections
1674:
Map of Maryland Showing State Road System: State Aid Roads and Improved County Road Connections
1627:
Map of Maryland Showing State Road System: State Aid Roads and Improved County Road Connections
937:
728:
591:
505:
431:
371:
351:
184:
1918:
1189:"Level III and IV Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia"
1102:
1042:
827:
666:
347:
122:
1776:
1089:
965:
893:
860:
492:
1219:
8:
918:
761:
700:
690:
686:
545:
488:
367:
145:
1793:
1712:
1648:
1575:
1016:
961:
889:
785:
757:
724:
587:
541:
537:
484:
440:
436:
363:
314:
299:
180:
159:
141:
1910:
1443:"National Register of Historic Places Registration: Victor Cullen School Power House"
996:
856:
823:
682:
609:
480:
387:
343:
155:
118:
1653:(1931â1934 ed.). Baltimore: Maryland State Roads Commission. pp. 334â335
1580:(1924â1926 ed.). Baltimore: Maryland State Roads Commission. pp. 49, 84
527:
at the FrederickâWashington county line about 400 feet (120 m) south of the
1928:
383:
540:(McAfee Hill Road) and turns northwest onto that road. The highway intersects
1937:
1717:(1939â1940 ed.). Baltimore: Maryland State Roads Commission. p. 122
1194:. Corvallis, OR: U.S. Environmental Protection Agency. pp. 19â22, 24, 25
382:(US 15) in Thurmont, the state highway passes through the wide valley of the
335:
213:
1798:(1935â1936 ed.). Baltimore: Maryland State Roads Commission. p. 87
780:
MD 550 turns northwest at this intersection; Main Street is unsigned MD 194A
1498:"Years after Fort Ritchie opened for redevelopment, base remains shuttered"
550:
533:
528:
865:
MD 550 turns north onto Church Street; north end of concurrency with MD 77
452:
and receives the north end of Creagerstown Road before leaving Woodsboro.
1792:
Tabler, H.E.; Wilkinson, C. Nice; Luthardt, Frank F. (December 4, 1936).
523:
MD 550 curves west parallel to the Maryland Midland Railway and summits
509:
1711:
Whitman, Ezra B.; Webb, P. Watson; Thomas, W. Frank (March 15, 1941).
612:. MD 72 followed Lewistown Road and Old Frederick Road from US 15 at
479:
MD 550 enters the town of Thurmont just before the highway intersects
1875:
1855:
1835:
1182:
1180:
1178:
1153:
1069:
970:
Northern terminus of MD 491; MD 550 turns north onto Macfee Hill Road
1317:"National Register of Historic Places Registration: Strawberry Hill"
460:. MD 550 also passes to the west of another 18th century harmhouse,
19:"Maryland Route 81" redirects here. For the Interstate highway, see
1574:
Mackall, John N.; Darnall, R. Bennett; Brown, W.W. (January 1927).
339:
223:
1175:
842:
809:
743:
710:
1187:
Woods, Alan J.; Omernik, James M.; Brown, Douglas D. (May 1999).
430:
MD 550 begins at an intersection with MD 26 (Main Street) in the
1460:
1815:
1690:
1550:
1522:
1366:
1266:
39:
1758:
Map of Maryland: Showing State Road System and State Aid Roads
1604:
Map of Maryland: Showing State Road System and State Aid Roads
1390:
1388:
1386:
1292:"National Register of Historic Places Registration: Pennterra"
567:
386:; to the north, the highway passes along the northern edge of
1491:
1489:
1006:
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
1383:
1070:
Highway Information Services Division (December 31, 2021).
342:. The state highway runs 24.43 miles (39.32 km) from
1774:
1754:
1734:
1670:
1623:
1600:
1486:
1224:(Map). Corvallis, OR: U.S. Environmental Protection Agency
1412:
727:
south (Woodsboro Pike) / Woodsboro Road west â
1885:(Map). Baltimore: Maryland State Highway Administration.
1865:(Map). Baltimore: Maryland State Highway Administration.
1845:(Map). Baltimore: Maryland State Highway Administration.
1577:
Annual Reports of the State Roads Commission of Maryland
358:, connecting Fort Ritchie in the northeastern corner of
354:. MD 550 runs southeast–northwest across central
1791:
981:
Camp Ritchie Access Road north / Pennersville Road east
864:
831:
765:
732:
1647:
Byron, William D.; Lacy, Robert (December 28, 1934).
1367:
Federal Railroad Administration (November 19, 2021).
1334:
1267:
Federal Railroad Administration (November 19, 2021).
1149:
1147:
1145:
1143:
1141:
1139:
859:
west (Main Street) / Water Street south â
1573:
1523:Federal Railroad Administration (August 11, 2022).
1308:
1137:
1135:
1133:
1131:
1129:
1127:
1125:
1123:
1121:
1119:
466:
St. John's Church at Creagerstown Historic District
1825:(Map). Baltimore: Maryland State Roads Commission.
1700:(Map). Baltimore: Maryland State Roads Commission.
1642:
1640:
1569:
1567:
1560:(Map). Baltimore: Maryland State Roads Commission.
1236:
426:View north along MD 550 just north of Creagerstown
1710:
1186:
1935:
1795:Report of the State Roads Commission of Maryland
1714:Report of the State Roads Commission of Maryland
1650:Report of the State Roads Commission of Maryland
1516:
1435:
1116:
498:
1785:
1704:
1637:
1564:
898:Southern terminus of MD 806; officially MD 806R
685:(Liberty Road) / Mill Street south â
512:, whose preserved historic remains include the
1876:Maryland State Highway Administration (1997).
1856:Maryland State Highway Administration (1995).
1836:Maryland State Highway Administration (1977).
1341:Reed, Paula S.; Wallace, Edie (October 1999).
1154:Maryland State Highway Administration (2015).
1065:
1063:
1061:
1059:
1057:
475:View south along MD 550 from US 15 in Thurmont
26:"MD 81" redirects here. For the aircraft, see
1781:(Map). Baltimore: Maryland Geological Survey.
1764:(Map). Baltimore: Maryland Geological Survey.
1744:(Map). Baltimore: Maryland Geological Survey.
1680:(Map). Baltimore: Maryland Geological Survey.
1633:(Map). Baltimore: Maryland Geological Survey.
1610:(Map). Baltimore: Maryland Geological Survey.
1283:
1232:– via USEPA Ecoregions (Omernik) layer.
1213:
1211:
1209:
1360:
1260:
1619:
1617:
1596:
1594:
1546:
1544:
1542:
1525:"U.S. DOT Crossing Inventory Form: 831799N"
1369:"U.S. DOT Crossing Inventory Form: 831769W"
1340:
1269:"U.S. DOT Crossing Inventory Form: 535012Y"
1157:Maryland General Highway Statewide Grid Map
1054:
796:Hessong Bridge Road south / Moser Road west
1423:. Maryland Department of Juvenile Services
1206:
417:
1923:
1694:Map of Maryland Showing State Road System
1646:
1920:Template:Attached KML/Maryland Route 550
1869:
1849:
1829:
1816:Maryland State Roads Commission (1956).
1809:
1768:
1748:
1728:
1691:Maryland State Roads Commission (1938).
1684:
1664:
1614:
1591:
1551:Maryland State Roads Commission (1939).
1539:
470:
421:
378:. South of the highway's junction with
16:State highway in Maryland, United States
1495:
1466:
1314:
1289:
1076:. Maryland State Highway Administration
1936:
1554:General Highway Map: State of Maryland
1217:
994:
988:
980:
974:
947:
941:
908:
902:
875:
869:
836:
803:
795:
789:
776:
770:
737:
704:
676:
670:
99:Journey Through Hallowed Ground Byway
53:Maryland Route 550 highlighted in red
1954:Roads in Washington County, Maryland
1504:from the original on October 1, 2014
799:MD 550 turns north onto Jimtown Road
766:North end of concurrency with MD 194
733:South end of concurrency with MD 194
456:leads to the 18th century farmhouse
412:
28:McDonnell Douglas MD-80 § MD-81
1949:Roads in Frederick County, Maryland
1775:Maryland Geological Survey (1930).
1755:Maryland Geological Survey (1923).
1735:Maryland Geological Survey (1910).
1671:Maryland Geological Survey (1935).
1624:Maryland Geological Survey (1933).
1601:Maryland Geological Survey (1927).
1527:. U.S. Department of Transportation
1496:Sherman, Natalie (August 8, 2014).
1371:. U.S. Department of Transportation
1271:. U.S. Department of Transportation
984:MD 550 turns west onto Pen Mar Road
917:(Catoctin Mountain Highway) â
832:South end of concurrency with MD 77
536:, MD 550 meets the northern end of
13:
648:
362:and Libertytown with the towns of
75:24.43 mi (39.32 km)
14:
1965:
1892:
1467:Andreve, George J. (March 1989).
1448:. Maryland Historical Trust. 1986
1418:
1397:Blue Ridge Summit, PA quadrangle
1036:
964:south (Macfee Hill Road) â
955:
949:
909:
883:
877:
850:
844:
817:
811:
751:
745:
718:
712:
677:
628:
566:
309:
294:
175:
164:
150:
136:
113:
93:
38:
1315:Andreve, George J. (May 1975).
1290:Andreve, George J. (May 1975).
892:north (Emmitsburg Road) â
826:east (Rocky Ridge Road) â
396:Blue Ridge Summit, Pennsylvania
370:and the smaller communities of
1879:Maryland: Official Highway Map
1859:Maryland: Official Highway Map
1839:Maryland: Official Highway Map
1819:Maryland: Official Highway Map
760:north (Woodsboro Pike) â
1:
1048:
642:
499:Thurmont to HighfieldâCascade
196:Pen Mar Road in Fort Ritchie
7:
1474:. Maryland Historical Trust
1348:. Maryland Historical Trust
1322:. Maryland Historical Trust
1297:. Maryland Historical Trust
1221:EnviroAtlas Interactive Map
1029:
518:old administration building
10:
1970:
1944:State highways in Maryland
1073:Highway Location Reference
995:Pen Mar Road north â
556:
25:
18:
1043:Maryland Roads portal
1005:
1000:
991:
983:
977:
969:
944:
936:
931:
926:
905:
897:
872:
839:
806:
798:
792:
784:
779:
773:
740:
707:
699:
694:
673:
665:
660:
655:
652:
647:
641:
638:
635:
597:
583:
579:
563:
350:north to Pen Mar Road in
287:
252:
247:
243:
229:
219:
209:
204:
200:
192:
128:
109:
104:
87:
79:
71:
63:
58:
51:
35:
21:Interstate 81 in Maryland
1245:Woodsboro, MD quadrangle
1012:
450:Maryland Midland Railway
1535:– via Safety Map.
1379:– via Safety Map.
1279:– via Safety Map.
1218:Staff (December 2011).
418:Libertytown to Thurmont
257:Maryland highway system
1421:"Victor Cullen Center"
506:youth detention center
476:
432:unincorporated village
427:
474:
425:
338:in the U.S. state of
1924:KML is from Wikidata
493:Catoctin High School
927:Diamond interchange
546:Hanover Subdivision
489:diamond interchange
130:Major intersections
477:
428:
328:Maryland Route 550
45:Maryland Route 550
1500:. Baltimore Sun.
1104:Washington County
1027:
1026:
1001:Northern terminus
777:Main Street south
695:Southern terminus
605:
604:
573:Maryland Route 81
437:runs concurrently
413:Route description
403:Maryland Route 81
388:Catoctin Mountain
360:Washington County
325:
324:
321:
320:
59:Route information
1961:
1914:
1887:
1886:
1884:
1873:
1867:
1866:
1864:
1853:
1847:
1846:
1844:
1833:
1827:
1826:
1824:
1813:
1807:
1806:
1804:
1803:
1789:
1783:
1782:
1772:
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1732:
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1662:
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1621:
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1392:
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1364:
1358:
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1321:
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1303:
1302:
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1258:
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1240:
1234:
1233:
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1229:
1215:
1204:
1203:
1201:
1199:
1193:
1184:
1173:
1172:
1170:
1168:
1162:
1151:
1114:
1111:
1109:
1098:
1096:
1091:Frederick County
1085:
1083:
1081:
1067:
1041:
1040:
1039:
1020:
1013:
960:
959:
958:
953:
952:
913:
912:
888:
887:
886:
881:
880:
855:
854:
853:
848:
847:
822:
821:
820:
815:
814:
756:
755:
754:
749:
748:
723:
722:
721:
716:
715:
681:
680:
650:
644:
633:
632:
570:
561:
560:
356:Frederick County
317:
313:
312:
302:
298:
297:
289:
288:
179:
178:
168:
167:
154:
153:
140:
139:
131:
117:
116:
97:
96:
42:
33:
32:
1969:
1968:
1964:
1963:
1962:
1960:
1959:
1958:
1934:
1933:
1929:MDRoads: MD 550
1925:
1922:
1917:
1916:
1915:
1899:
1895:
1890:
1882:
1874:
1870:
1862:
1854:
1850:
1842:
1834:
1830:
1822:
1814:
1810:
1801:
1799:
1790:
1786:
1773:
1769:
1761:
1753:
1749:
1741:
1738:Map of Maryland
1733:
1729:
1720:
1718:
1709:
1705:
1697:
1689:
1685:
1677:
1669:
1665:
1656:
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1622:
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1599:
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1507:
1505:
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1471:
1465:
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1436:
1426:
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1413:
1403:
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1393:
1384:
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1365:
1361:
1351:
1349:
1345:
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1325:
1323:
1319:
1313:
1309:
1300:
1298:
1294:
1288:
1284:
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1272:
1265:
1261:
1251:
1249:
1242:
1241:
1237:
1227:
1225:
1216:
1207:
1197:
1195:
1191:
1185:
1176:
1166:
1164:
1160:
1152:
1117:
1107:
1101:
1094:
1088:
1079:
1077:
1068:
1055:
1051:
1037:
1035:
1032:
1023:
1015:
1011:
1007:
956:
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950:
948:
910:
884:
882:
878:
876:
851:
849:
845:
843:
818:
816:
812:
810:
752:
750:
746:
744:
719:
717:
713:
711:
678:
645:
631:
575:
574:
571:
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1072:
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938:Fort Ritchie
729:Walkersville
653:Destinations
623:
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592:Fort Ritchie
551:Pen Mar Park
534:Fort Ritchie
529:Pennsylvania
522:
502:
478:
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429:
406:
402:
400:
372:Creagerstown
352:Fort Ritchie
331:
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255:
185:Fort Ritchie
83:1933âpresent
1017:Concurrency
828:Rocky Ridge
667:Libertytown
514:power house
491:and passes
390:and crests
348:Libertytown
172:in Thurmont
123:Libertytown
1938:Categories
1802:2011-03-21
1721:2011-03-21
1657:2011-03-21
1584:2011-03-21
1301:2016-01-01
1049:References
966:Smithsburg
933:Washington
923:Gettysburg
915:US 15
894:Emmitsburg
861:Smithsburg
510:sanatorium
265:Interstate
238:Washington
170:US 15
1531:April 26,
1478:April 25,
1452:April 25,
1427:April 25,
1404:April 25,
1375:April 26,
1352:April 24,
1326:April 24,
1275:April 26,
1252:April 24,
1228:April 26,
1198:April 26,
1167:April 24,
1080:April 23,
919:Frederick
762:Taneytown
701:Woodsboro
691:Baltimore
687:Frederick
662:Frederick
614:Lewistown
601:1927â1977
458:Pennterra
368:Woodsboro
234:Frederick
146:Woodsboro
1902:KML file
1502:Archived
1030:See also
1019:terminus
786:Thurmont
639:Location
588:Thurmont
584:Location
364:Thurmont
340:Maryland
230:Counties
224:Maryland
205:Location
160:Thurmont
1419:Staff.
997:Pen Mar
598:Existed
590:–
557:History
334:) is a
210:Country
88:Tourist
80:Existed
962:MD 491
890:MD 806
758:MD 194
725:MD 194
636:County
538:MD 491
485:MD 806
441:MD 194
332:MD 550
315:MD 552
300:MD 547
181:MD 491
142:MD 194
90:routes
72:Length
1883:(PDF)
1863:(PDF)
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1823:(PDF)
1762:(PDF)
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1192:(DOC)
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1095:(PDF)
992:39.32
989:24.43
978:38.99
975:24.23
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942:23.84
906:23.67
903:14.71
873:22.97
870:14.27
857:MD 77
840:22.39
837:13.91
824:MD 77
807:20.79
804:12.92
793:18.78
790:11.67
683:MD 26
656:Notes
610:MD 72
481:MD 77
439:with
407:MD 81
394:near
344:MD 26
275:State
220:State
156:MD 77
119:MD 26
66:MDSHA
1911:help
1907:edit
1533:2023
1510:2014
1480:2023
1454:2023
1429:2023
1406:2023
1377:2023
1354:2023
1328:2023
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1169:2023
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774:9.03
771:5.61
741:8.95
738:5.56
708:8.06
705:5.01
674:0.00
671:0.00
516:and
446:MDOT
374:and
366:and
544:'s
542:CSX
346:in
183:in
158:in
144:in
121:in
1940::
1909:â˘
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