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paved as a concrete road from
Frederick Road near downtown Ellicott City north to near its present intersection with US 40 in 1923. Rogers Avenue was completed north to Old Frederick Road in 1924 and 1925. The next section of MD 99 to be built was a concrete road from MD 32 to Henryton Road between 1924 and 1926. This road was part of a highway to connect Slacks Corner with
528:
430:
and widened to 24 feet (7.3 m) starting in 1953, shortly before it became part of MD 99. I-70 north of
Ellicott City and US 29 from US 40 to MD 99 were constructed between 1964 and 1967. MD 99 was relocated between US 29 and south of I-70 around 1966 when the state highway's bridge over I-70 was built; two sections of old alignment became segments of
417:, was assigned to Old Frederick Road east of St. Johns Lane. In addition, MD 105 was assigned to Rogers Avenue, which would later become part of MD 99. The first section of what was to become MD 99 was constructed as a 9-foot (2.7 m) wide macadam road along St. Johns Lane from Frederick Road north to Old Frederick Road by 1915.
409:
around 1812. In the 20th century, the portion of Old
Frederick Road east of West Friendship became part of two state highways. MD 99 was assigned to St. Johns Lane north of Frederick Road (formerly US 40 and MD 144) and Old Frederick Road from St. Johns Lane to Slacks Corner. The original MD 100, as opposed to the
429:
In 1956, St. Johns Lane and Old
Frederick Road east of Rogers Avenue were removed from the state highway system, resulting in the elimination of MD 100 and MD 105. MD 99 was extended east along Old Frederick Road and south along Rogers Avenue to Frederick Road. Rogers Avenue had been reconstructed
420:
By 1923, Old
Frederick Road from St. Johns Lane west to Marriottsville Road was paved in concrete and Old Frederick Road from a place called Wheelwrights Gate near the modern US 29 intersection to the Baltimore County line at the Patapsco River was reconstructed as a macadam road. Rogers Avenue was
408:
Old
Frederick Road was the original 18th-century highway between Baltimore and the Mount Airy area. The highway, which was mostly built along the height of land between the Patapsco and Patuxent watersheds, was replaced by the more southern Baltimore and Fredericktown Turnpike, which is now MD 144,
425:
on the
Patapsco River; Henryton Road later became part of MD 101. The gap between Henryton Road and Marriottsville Road was closed when a concrete road was constructed in 1929. Construction began shortly after 1930 on the gap between St. Johns Lane and Wheelwrights Gate; MD 100 was completed when
727:
319:
MD 99 begins at an intersection with MD 32 (Sykesville Road) at Slacks Corner a short distance north of MD 32's interchange with I-70 in West
Friendship. Old Frederick Road continues west as a county highway that parallels the north side of I-70 west to Twin Arch Road near
359:
East of
Woodstock Road, MD 99 crosses Davis Branch and enters a suburban area on the north side of Ellicott City. The state highway begins to parallel I-70 as it intersects Bethany Lane. MD 99 meets St. John's Lane, its original alignment, at the entrance to
400:
344:, which contains Alpha Ridge Community Park. Continuing east, the state highway intersects a pair of county highways, Marriottsville Road and Woodstock Road. Marriottsville Road heads north toward the village of
303:; in 1956, the state highway was rerouted along part of MD 100 and all of MD 105 to downtown Ellicott City. MD 99's eastern terminus was rolled back to US 29 in two steps in the late 1970s and late 1980s.
311:
368:, before reaching its eastern terminus at the national northern terminus of US 29 (Columbia Pike). US 29 heads south as a freeway through an interchange with I-70 toward
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1083:
1019:
996:
952:
932:
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434:. MD 99's eastern terminus was rolled back from Frederick Road to US 40 in 1978 and from US 40 to its present terminus at US 29 in 1989.
295:. All three highways were constructed between the early 1920s and early 1930s. MD 99 originally turned south along St. Johns Lane to
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1140:
181:
56:
324:. MD 99 heads east as a two-lane undivided road and immediately intersects the old alignment of MD 32, which is unsigned
1157:
385:
191:
380:
of
Ellicott City. Before Rogers Avenue crosses I-70, another section of Old Frederick Road splits to the east toward
186:
389:
1127:
377:
1122:
348:
on the Patapsco River and south to junctions with I-70 and US 40. Woodstock Road heads north to the village of
196:
328:
and named Butterfly Court. The state highway mostly follows the height of land between the watersheds of the
364:
to the north of the road. MD 99 intersects Mt. Hebron Drive, which heads north toward the historic home
337:
288:
802:
Weller, O.E.; Parran, Thomas; Miller, W.B.; Perry, John M.; Ramsay, Andrew; Smith, J. Frank (May 1916).
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934:
Map of Maryland Showing State Road System: State Aid Roads and Improved County Road Connections
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The roadway continues east as county-maintained Rogers Avenue, which curves south toward the
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259:. Known as Old Frederick Road, the state highway runs 7.57 miles (12.18 km) from
231:
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587:
490:
260:
216:
92:
1109:
1104:
628:
373:
910:(1927–1930 ed.). Baltimore: Maryland State Roads Commission. pp. 216–217
858:(1924–1926 ed.). Baltimore: Maryland State Roads Commission. pp. 50, 87
336:
to the south. MD 99 passes through the communities of Alpha, which is home to
333:
329:
1151:
977:(1953–1954 ed.). Baltimore: Maryland State Roads Commission. p. 219
808:(1912–1915 ed.). Baltimore: Maryland State Roads Commission. p. 124
252:
134:
971:
McCain, Russell H.; Bennett, Edgar T.; Kelly, Bramwell (November 12, 1954).
732:
287:, was constructed as part of three state highways: MD 99, the original
16:
State highway in Howard County, Maryland, US, known as Old Frederick Rd
1081:
1061:
689:
852:
Mackall, John N.; Darnall, R. Bennett; Brown, W.W. (January 1927).
746:
256:
144:
758:. Baltimore: Maryland State Roads Commission. 1958-12-15. p.
426:
that section of Old Frederick Road was paved in concrete by 1933.
904:
Uhl, G. Clinton; Bruce, Howard; Shaw, John K. (October 1, 1930).
365:
283:. MD 99, which follows the original 18th-century road west from
404:
View east at the west end of MD 99 at MD 32 near West Friendship
1017:
994:
950:
781:
884:
Map of Maryland: Showing State Road System and State Aid Roads
832:
Map of Maryland: Showing State Road System and State Aid Roads
25:
1038:
642:
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
690:
Highway Information Services Division (December 31, 2022).
930:
880:
828:
279:(I-70) through a rural and suburban area in northeastern
1091:(Map). Baltimore: Maryland State Highway Administration.
1071:(Map). Baltimore: Maryland State Highway Administration.
855:
Annual Reports of the State Roads Commission of Maryland
805:
Annual Reports of the State Roads Commission of Maryland
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south (Columbia Pike) / Rogers Avenue south –
493:(Sykesville Road) / Old Frederick Road west –
352:, also on the Patapsco River, where the highway becomes
801:
1031:
851:
722:
720:
1027:(Map). Baltimore: Maryland State Roads Commission.
1004:(Map). Baltimore: Maryland State Roads Commission.
970:
960:(Map). Baltimore: Maryland State Roads Commission.
791:(Map). Baltimore: Maryland State Roads Commission.
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974:Report of the State Roads Commission of Maryland
907:Report of the State Roads Commission of Maryland
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1082:Maryland State Highway Administration (1989).
1062:Maryland State Highway Administration (1978).
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940:(Map). Baltimore: Maryland Geological Survey.
890:(Map). Baltimore: Maryland Geological Survey.
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637:Eastern terminus; northern terminus of US 29
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782:Maryland State Roads Commission (1939).
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1141:Template:Attached KML/Maryland Route 99
1039:"NBI Structure Number: 100000130001010"
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755:A History of Road Building in Maryland
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275:. MD 99 parallels the north side of
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44:Maryland Route 99 highlighted in red
931:Maryland Geological Survey (1933).
881:Maryland Geological Survey (1927).
829:Maryland Geological Survey (1923).
13:
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315:View west along MD 99 in Woodstock
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66:7.57 mi (12.18 km)
1163:Roads in Howard County, Maryland
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1085:Maryland: Official Highway Map
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998:Maryland: Official Highway Map
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340:to the north of the road, and
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1043:National Bridge Inventory
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442:The entire route is in
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174:Maryland highway system
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362:Mt. Hebron High School
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332:to the north and the
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255:in the U.S. state of
1145:KML is from Wikidata
384:, the historic home
728:"Maryland Route 99"
388:, and the historic
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38:Old Frederick Road
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307:Route description
245:Maryland Route 99
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438:Junction list
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1046:. Retrieved
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466:Destinations
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390:Daniels Mill
358:
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248:
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243:
172:
74:1927–present
733:Google Maps
499:Clarksville
415:Glen Burnie
271:(US 29) in
1152:Categories
1048:2011-05-03
981:2011-05-03
914:2011-05-03
862:2011-05-03
812:2011-05-03
765:2011-05-03
739:2011-05-03
700:2011-05-03
669:References
629:Washington
621:US 29
551:US 40
495:Sykesville
322:Mount Airy
182:Interstate
112:US 29
633:Pensacola
509:Woodstock
350:Woodstock
285:Baltimore
1123:KML file
650:See also
625:Columbia
586: –
553: –
549: /
452:Location
423:Henryton
386:Linnwood
370:Columbia
267:east to
257:Maryland
151:Counties
145:Maryland
126:Location
730:(Map).
588:Granite
396:History
366:Elmonte
326:MD 851J
251:) is a
131:Country
71:Existed
584:MD 125
432:MD 985
354:MD 125
301:MD 144
293:MD 105
291:, and
289:MD 100
232:MD 100
155:Howard
63:Length
1089:(PDF)
1069:(PDF)
1025:(PDF)
1002:(PDF)
958:(PDF)
938:(PDF)
888:(PDF)
836:(PDF)
789:(PDF)
604:12.18
491:MD 32
469:Notes
297:US 40
263:near
261:MD 32
249:MD 99
217:MD 97
192:State
141:State
95:near
93:MD 32
57:MDSHA
1132:help
1128:edit
601:7.57
566:5.99
563:3.72
547:I-70
516:4.62
513:2.87
482:0.00
479:0.00
372:and
299:and
114:in
1154::
1130:•
1041:.
1010:^
923:^
896:^
871:^
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774:^
760:29
719:^
676:^
631:,
627:,
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462:km
456:mi
446:.
356:.
224:→
209:←
187:US
1134:)
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247:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
_at_Woodstock_Road_in_Ellicott_City,_Howard_County,_Maryland.jpg)