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Maryland Route 7

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Maryland Route 7 marker
Maryland Route 7
Map
Maryland Route 7 highlighted in red
Route information
Maintained byMDSHAandTown of Perryville
Existed1938–present
Tourist
routes		Lower Susquehanna Scenic Byway
Location
CountryUnited States
StateMaryland
CountiesBaltimore,Harford,Cecil
Highway system
←MD 6→MD 8

Maryland Route 7(MD 7) is a collection ofstate highwaysin the U.S. state ofMaryland.Known for much of their length asPhiladelphia Road,there are five disjoint mainline sections of the highway totaling 40.23 miles (64.74 km) that parallelU.S. Route 40(US 40) inBaltimore,Harford,andCecilcounties in northeastern Maryland. The longest section of MD 7 begins at US 40 just east of the city ofBaltimoreinRosedaleand extends through eastern Baltimore County and southern Harford County to US 40 inAberdeen.The next segment of the state highway is a C-shaped route throughHavre de Graceon the west bank of theSusquehanna River.The third mainline section of MD 7 begins inPerryvilleon the east bank of the Susquehanna River and ends at US 40 a short distance west of the start of the fourth section, which passes throughCharlestownandNorth Eastbefore ending at US 40, just west ofElkton.The fifth segment of the highway begins at South Street and passes through the eastern part of Elkton before reconnecting with US 40 east of Elkton and west of theDelawarestate line.

MD 7 is the old alignment of US 40 in northeastern Maryland. The route was first laid out early incolonial timesand later formed part of thepost roadbetween Baltimore andPhiladelphia(going further north toNew York Cityand intoNew EnglandtoBoston) and between the northern and southern of the originalThirteen Colonieson theEast Coast.The highway in Baltimore and Harford counties became a turnpike, constructed and operated by a private stockholder company in the early 19th century. TheMaryland State Roads Commission(established 1908 - now theMaryland State Highway Administrationwithin theMaryland Department of Transportationsince the early 1970s) marked portions of what became known as the Philadelphia Road, close to Baltimore and between Perryville and Elkton for improvement as state roads in 1909. Those sections and the highway between Aberdeen and Havre de Grace were constructed as modern roads in the early to mid-1910s. The remainder of the highway was constructed in the 1920s and designated as US 40 in 1927. The high volume of traffic and the required continuous expansion of the highway led the old Maryland State Roads Commission to construct the modernPulaski Highway(named for thePolishcavalry officerCasimir Pulaski[1745-1779], who fought in theAmerican Revolutionary War[1775-1783]), which was constructed during the "Great Depression"years between 1935 and 1941. Old sections of US 40 became segments of MD 7 between 1938 and 1941 as portions of the new four-lanedivided highwaywere opened from Baltimore to Elkton.

Route description

[edit]

There are five mainline sections of MD 7:

  • MD 7 (without suffix) runs 22.83 miles (36.74 km) from US 40 in Rosedale to US 40 andMD 159in Aberdeen.
  • MD 7A extends 2.66 miles (4.28 km) from US 40 west of Havre de Grace to US 40 andMD 155in the city.
  • MD 7B has a length of 3.56 miles (5.73 km) from Perry Point VA Medical Center in Perryville to US 40 east of Perryville.
  • MD 7C runs 9.73 miles (15.66 km) from US 40 west of Charlestown east to US 40 andMD 279west of Elkton.
  • MD 7D spans 1.45 miles (2.33 km) from South Street east to US 40 within Elkton.[1]

Baltimore–Aberdeen

[edit]
Maryland Route 7 marker
Maryland Route 7
LocationBaltimore–Aberdeen
Length22.83 mi[1](36.74 km)

MD 7 begins at an intersection with US 40 (Pulaski Highway) in Rosedale just east of the Baltimore city line. The highway heads north then immediately turns east at a three-way intersection; the west leg of the intersection is Old Philadelphia Road, which is unsignedMD 7BA.MD 7 heads northeast as a two-lane undivided street through a residential neighborhood with scattered businesses and industrial properties as well as a crossing of Redhouse Creek. The route intersectsMD 588(Golden Ring Road) and expands to a five-lane road with acenter left-turn lanebefore meetingInterstate 695(I-695, Baltimore Beltway) at apartial cloverleaf interchange.MD 7 continues east pastThe Centre at Golden Ringshopping center, crossing Stemmers Run before its intersection withRossville BoulevardinRossville.The state highway reduces to two lanes and continues northeast through residential subdivisions on the westbound side and industrial facilities on the eastbound side of the highway.[1][2]

MD 7 expands to a five-lane highway with a center left-turn lane as it approaches Campbell Boulevard inWhite Marsh.The road passes between a pair of shopping centers before crossing White Marsh Run. MD 7 continues northeast between industrial parks, intersecting Industrial Park Road (unsigned MD 7J) before reducing to two lanes and crossingMD 43(White Marsh Boulevard). Westbound MD 43 is accessed via a ramp east of the overpass. The state highway crosses Honeygo Run and passes through a mix of forest and residential subdivisions, intersecting Cowenton Avenue andJoppa Roadbefore crossingGunpowder Falls.MD 7 passes through farmland and intersects Bradshaw Road in the hamlet ofBradshawbefore crossingLittle Gunpowder Fallsand entering Harford County.[1][2]

MD 7 eastbound in Rossville

MD 7 heads east through forest and scattered residential subdivisions through the northern fringe ofJoppatowne,where the highway intersects Old Mountain Road andMD 152(Mountain Road). The route crossesWinters Runand intersects Edgewood Road andMD 24(Vietnam Veterans Memorial Highway) inEdgewood.MD 7 crosses Haha Branch and meets Abingdon Road atAbingdon,which is home to theNelson-Reardon-Kennard House.The highway intersectsMD 136(Calvary Road) in between crossings of Bynum Run and James Run, which flow into theBush River.MD 7 temporarily expands to a four-lane divided highway as it passes through the commercial area ofRiverside,where the highway meetsMD 543(Creswell Road) just south of that highway's interchange withI-95.The road passes through forest with isolated residential subdivisions, withroundaboutslocated at Seven Trails Drive and Holly Oak Circle.[1][2]

MD 7's name changes to Old Philadelphia Road as it crosses Grays Run. Beyond Stepney Road, the state highway curves to the southeast to cross overCSX'sPhiladelphia Subdivisionrailroad line, passing between industrial parks before reaching its eastern terminus at US 40 (Pulaski Highway) on the western edge of Aberdeen. Old Philadelphia Road continues east as MD 159 before becoming a county highway that serves an industrial area, intersectsMD 715(Short Lane), and passes the historic homePoplar Hill,after which the highway merges with US 40 just west of downtown Aberdeen.[1][2]

Havre de Grace

[edit]
Maryland Route 7 marker
Maryland Route 7A
LocationHavre de Grace
Length2.66 mi[1](4.28 km)
Tourist
routes		Lower Susquehanna Scenic Byway
View west along MD 7 past US 40 and MD 155 in Havre de Grace

MD 7 begins at an intersection with US 40 just west of Havre de Grace. The highway heads northeast as two-lane undivided Revolution Street, crossing overAmtrak'sNortheast Corridorrailroad line and passing through an industrial area before entering a residential area upon entering the city limits. The route comes to a grade crossing withNorfolk Southern Railway's Havre de Grace Industrial Track. MD 7 veers east to enter the street grid at Bloomsbury Avenue. The state highway turns north onto Union Street, which heads south asMD 490,adjacent toUniversity of Maryland Harford Memorial Hospital.The route heads through theHavre de Grace Historic District,passing through a residential area about four blocks from theSusquehanna Riverwaterfront through Congress Street, where the highway begins to approach the waterfront. Immediately after passing under theAmtrak Susquehanna River Bridge,MD 7 turns west onto Otsego Street. The road crosses Juniata Street, where apark and ridelot is located on the southwest corner of the intersection. The highway reaches its northern terminus at a five-way intersection with Otsego Street, MD 155 (Ohio Street), and US 40 (Pulaski Highway), which crosses the Susquehanna River a short distance to the east on theThomas J. Hatem Memorial Bridge.[1][3]

Perryville

[edit]
Maryland Route 7 marker
Maryland Route 7B
LocationPerryville
Length3.56 mi[1](5.73 km)

MD 7 begins at the entrance to thePerry Point VA Medical Centerjust north and east of the Amtrak Susquehanna River Bridge adjacent toRodgers Tavernin the town of Perryville. The highway heads east as two-lane undivided and municipally maintained Broad Street, passing under both railroad tracks of thewyeof Norfolk Southern Railway'sPort Road Branchline with Amtrak's Northeast Corridor, within which is thePerryville stationthat serves as the terminus ofMARC'sPenn Line.Maintenance responsibility transfers from the town of Perryville to the state atMD 222(Aiken Avenue). MD 7 heads east over Mill Creek, pastMD 327(Ikea Way), and leaves the town limits after an intersection with Coudon Boulevard, which leads to US 40. The route continues east as Principio Furnace Road through farmland, passing the historic homeWoodlandsand Furnace Bay Golf Course. MD 7 passes the remains ofPrincipio Furnaceand crosses Principio Creek before reaching its eastern terminus at US 40.[1][4]

Charlestown–Elkton

[edit]
Maryland Route 7 marker
Maryland Route 7C
LocationCharlestown–Elkton
Length9.73 mi[1](15.66 km)

MD 7 begins at US 40 (Pulaski Highway) northwest of Charlestown, a short distance east of the terminus of MD 7B. The highway heads southeast as two-lane undivided Old Philadelphia Road in a forested area between a pair of quarries. As MD 7 approaches Amtrak's Northeast Corridor,MD 267(Baltimore Street) splits to the southeast and crosses the tracks to pass through Charlestown, while MD 7 begins to closely parallel the tracks along the northern edge of the town. The state highway receives the other end of MD 267 (Bladen Street) as it curves away from the railroad. MD 7 crosses Broad Creek and Stony Run before passing under the Amtrak line.[1][5]

MD 7 crossesNorth East Creekand enters the town of North East, where the highway is known as Cecil Avenue. The highway intersectsMD 272,which follows aone-way pair,Main Street southbound and Mauldin Avenue northbound. MD 7 leaves the town and passes through a forested area with scattered residences as Old Philadelphia Road. The route passes through anS-curveduring which it crosses over a bridge to the north side of Amtrak's Northeast Corridor. On the north side of the bridge is a stub of old alignment, MD 7H. MD 7 continues east, passing Old Elk Neck Road before turning north and reaching its eastern terminus at US 40. The roadway continues beyond the intersection as MD 279 (Elkton Road).[1][5]

Elkton

[edit]
Maryland Route 7 marker
Maryland Route 7D
LocationElkton
Length1.45 mi[1](2.33 km)

MD 7 begins at South Street east of downtown Elkton, heading east on two-lane undivided East Main Street. Main Street continues west into downtown Elkton as a municipally-maintained road. A short distance past MD 7's western terminus, Main Street continues east asMD 281while MD 7 turns southeast onto Delaware Avenue. The state highway crossesBig Elk Creekand passes through a residential area before reaching its eastern terminus at US 40 (Pulaski Highway) about 2 miles (3.2 km) west of the Delaware state line.[1][6]

History

[edit]

Predecessor roads and state road construction

[edit]
MD 7 eastbound leaving North East

The rough alignment of what is now MD 7 in Baltimore and Harford counties existed by 1695 as a rudimentary road; Baltimore County ordered that the road be widened to 30 feet (9.1 m) in width to allow easy passage for carts and for bridges to replace ferries at the numerous creeks along the route. In 1717, the route from Baltimore to Elkton became part of a new overland post road between Philadelphia andWilliamsburg, Virginia.The highway between Baltimore and Havre de Grace was maintained as a turnpike, the Baltimore and Havre-de-Grace Turnpike, by 1825.[7]This turnpike later became known as the Baltimore and Philadelphia Turnpike and, after collection of tolls had ceased on the highway, the Philadelphia Road or the Post Road.[8][9]The final ferry along the route to be eliminated was the Susquehanna River crossing. The first vehicular bridge was a converted railroad bridge built by thePennsylvania Railroadin 1873, replaced with the current Amtrak bridge immediately to the north in 1904, and converted into a tolled vehicular bridge owned by several citizens of Harford and Cecil counties in 1910. The Maryland State Roads Commission purchased the bridge in 1923 and removed the tolls in 1928. In 1926, the commission double-decked the bridge to increase the bridge's capacity.[7]

When the Maryland State Roads Commission laid out a proposed state road system in 1909, two sections of the Philadelphia Road were included: from the eastern city limit of Baltimore, then at Elwood Avenue, east to Rossville in Baltimore County, and from Perryville to Elkton. The highway was paved as an 18-foot (5.5 m) wide tarredmacadamroad from Elwood Avenue to Herring Run in 1910.[10]The remainder of the road from Herring Run to Rossville was completed in concrete by 1921.[11]In Cecil County, the Philadelphia Road was paved with a 14-foot (4.3 m) wide macadam surface from the eastern town limit of North East to the western town limit of Elkton in 1913. The highway was paved in concrete from Perryville to Principio Creek and in macadam from there through Charlestown in 1914. The state road was paved in macadam from Charlestown to North East, including Cecil Avenue within the latter, in 1915.[10]The section of the state road through Charlestown, which is now MD 267, was bypassed with a concrete road that remained on the north side of the Pennsylvania Railroad by 1921.[11]

The section of the Post Road between Bel Air Avenue in Aberdeen and the former racetrack in Havre de Grace, much of which is nowMD 132,was paved under the state aid system as a 14-foot (4.3 m) wide macadam road by 1911.[10][12]The first section of the gap between Rossville and Aberdeen was filled with a concrete road from Bradshaw to Winters Run by 1921.[11]The remainder of the highway in Baltimore County and the section from Winters Run to Bynum Run were paved in concrete by 1923.[13]The final piece of Philadelphia Road in Harford County was completed as a concrete road from Bynum Run to Aberdeen in 1926.[14]The highway was paved in concrete along Main Street and Delaware Avenue through Elkton, with the exception of a gap at the west end of town, by 1923.[13]The gap between Elkton and the Delaware state line was filled in 1925. The 1,100-foot (340 m) gap at the west end of Elkton was left in inferior condition in anticipation of a grade separation of the Pennsylvania Railroad.[14]This grade separation and its approaches was completed in 1929, completing US 40, which had been assigned to the length of the Philadelphia Road in 1927.[15][16]

Improvements and construction of Pulaski Highway

[edit]

Improvements to US 40 began shortly after its designation. The highway was widened to 20 feet (6.1 m) in width from Baltimore to Rosedale and from Aberdeen to Havre de Grace, and to 18 feet (5.5 m) between Rosedale and Aberdeen, by 1930.[16]US 40 was also widened to 17 to 24 feet (5.2 to 7.3 m) from Perryville to the Delaware state line by 1934.[17]The Cecil County section of the highway was widened again with a pair of 3-foot (0.91 m) shoulders in 1937 and 1938.[18]The U.S. Highway was relocated to its present alignment through Aberdeen to eliminate a pair of crossings of the Pennsylvania Railroad between 1930 and 1933; the old highway south of the railroad tracks became an extension of MD 22.[19][20][21]However, the very high levels of traffic due to being the main highway between Baltimore and Philadelphia led to calls for the highway to be expanded to 40 feet (12 m) in width along its entire length by 1934.[17]

Former MD 7 eastbound on Main Street in Elkton approaching MD 268 in 2009

Rather than widen the existing road further, the Maryland State Roads Commission decided to build a new Philadelphia Road, later known as Pulaski Highway, as a divided highway on a new alignment between Baltimore and Aberdeen and to expand the newly relocated highway through Aberdeen to Havre de Grace to a four-lane divided highway.[17]The new US 40 was started in 1935 and completed in 1938.[22][18]The original Philadelphia Road between Baltimore and Aberdeen became the first section of MD 7.[21]The next sections of the old highway to be bypassed were in Havre de Grace and Perryville when the Thomas J. Hatem Memorial Bridge and its approaches opened in August 1940, replacing the double-decked converted railroad bridge.[23]The portions of the old highway on either side of the river became additional sections of MD 7.[21]Construction on the new Philadelphia Road in Cecil County began in 1938 and was completed in 1941.[23][24]Transfer of US 40 to its new alignment resulted in the addition of two more sections of MD 7 from west of Charlestown through North East to west of Elkton and through Elkton.[25]

Despite the bypassing of the original Philadelphia Road, improvements continued to be made to MD 7. The state highway was widened with dual 7 feet (2.1 m) shoulders from the Baltimore city limit to Rossville in 1938.[18]MD 7 was widened through Havre de Grace in 1953 and through Elkton in 1954.[26]The highway was relocated and became a divided highway on both sides of its intersection with MD 543 in Riverside concurrent with the construction of MD 543's interchange with I-95 in 1989.[27]MD 7's roundabout at Holly Oak Circle in Riverside was installed in 2000.[28]Several portions of the state highway have been transferred to local maintenance. The portion of MD 7 to the south of US 40 in the southern portion of Aberdeen was removed in 1950; MD 159 was extended north to MD 7's new eastern terminus and the remainder of Old Philadelphia Road became the responsibility of Harford County and Aberdeen.[29]MD 7 betweenMD 213and South Street in Elkton became one-way eastbound in 2001 and municipally maintained in 2003.[30][31]The western terminus of that section of MD 7 was truncated at MD 213 in 2010, resulting in the portion of Main Street from a dead end at the Amtrak Northeast Corridor to MD 213 also becoming the responsibility of Elkton.[32]In 2012, the MD 7 designation was removed from the portion of municipally-maintained roadway between MD 213 and South Street.[33]In 2018, a roundabout was constructed at Seven Trails Drive.[34]

Junction list

[edit]

MD 7

[edit]
CountyLocationmi
[1]		kmDestinationsNotes
BaltimoreRosedale0.000.00US 40(Pulaski Highway) / 66th Street south –Baltimore,AberdeenWestern terminus
0.040.064Old Philadelphia Road westUnsigned MD 7BA
2.253.62
MD 588north (Golden Ring Road) / Golden Ring Road south –Overlea		Southern terminus of MD 588
2.524.06I-695(Baltimore Beltway) –Towson,EssexI-695 Exit 34
White Marsh6.4310.35Industrial Park Road east / Nottingham Drive westIndustrial Park Road is unsigned MD 7J and receives an exit ramp from eastbound MD 43.
6.6210.65

MD 43west (White Marsh Boulevard) toI-95		Entrance ramp to westbound MD 43 only
HarfordJoppatowne13.5621.82
MD 152(Mountain Road) toI-95–Fallston,Aberdeen Proving Ground
Edgewood16.0325.80
MD 24(Veterans Memorial Highway) toI-95–Bel Air,Aberdeen Proving Ground
Riverside18.7930.24
MD 136north (Calvary Road) –Churchville		Southern terminus of MD 136
19.7631.80
MD 543(Creswell Road) toI-95–Belcamp,Churchville
Aberdeen22.8336.74
US 40(Philadelphia Boulevard) /MD 159south (Old Philadelphia Road) –Havre de Grace,Perryman		Eastern terminus; northern terminus of MD 159
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

MD 7A

[edit]

The entire route is inHavre de Grace,Harford County.

mi
[1]		kmDestinationsNotes
0.000.00US 40(Pulaski Highway) –AberdeenSouthern terminus
1.462.35
MD 490south (Union Avenue) / Revolution Street east –Concord Point Lighthouse,Decoy Museum,Maritime Museum		Northern terminus of MD 490; MD 7A turns north onto Union Avenue
2.123.41Water Street northMD 7A turns west onto Otsego Street
2.664.28
US 40(Pulaski Highway) /MD 155west (Ohio Street) / Otsego Street west –Aberdeen,Perryville,Churchville		Northern terminus; eastern terminus of MD 155
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

MD 7B

[edit]

The entire route is inCecil County.

Locationmi
[1]		kmDestinationsNotes
Perryville0.000.00Entrance to Perry Point VA Medical CenterWestern terminus
0.450.72
MD 222north (Aiken Avenue) –Perryville		Southern terminus of MD 222
0.841.35
MD 327east (Ikea Way)		Western terminus of MD 327
1.091.75
Coudon Boulevard toUS 40
​3.565.73US 40(Pulaski Highway) / Belvidere Road north –PerryvilleEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

MD 7C

[edit]

The entire route is inCecil County.

Locationmi
[1]		kmDestinationsNotes
​0.000.00US 40(Pulaski Highway) –Havre de Grace,ElktonWestern terminus
Charlestown1.231.98
MD 267east (Baltimore Street)		Western terminus of MD 267
2.554.10
MD 267west (Bladen Street)		Eastern terminus of MD 267
North East4.877.84
MD 272south (Main Street) –Elk Neck State Park
4.947.95
MD 272north (Mauldin Avenue) –Rising Sun
Elkton9.7315.66
US 40(Pulaski Highway) /MD 279north (Elkton Road) –North East,Elkton,Newark		Eastern terminus; southern terminus of MD 279
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

MD 7D

[edit]

The entire route is inElkton,Cecil County.

mi
[1]		kmDestinationsNotes
0.000.00South Street / East Main Street westWestern terminus
0.200.32
MD 281east (Main Street)		Western terminus of MD 281; MD 7 turns south onto Delaware Avenue
1.452.33US 40(Pulaski Highway) –Glasgow, DEEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Auxiliary routes

[edit]

MD 7 has six auxiliary routes:

  • MD 7BA is the unsigned designation for Old Philadelphia Road, a 0.18-mile (0.29 km) section of old alignment of MD 7 at its western terminus. MD 7BA continues the alignment of MD 7 west, becoming one lane westbound until it merges with westbound US 40 just east of the Baltimore city line.[1][35]
  • MD 7E is the unsigned designation for the 0.09-mile (0.14 km) ramp from westbound US 40 to westbound MD 7D in Elkton.[1][36]
  • MD 7H is the unsigned designation for an unnamed 0.12-mile (0.19 km) section of old alignment of MD 7 on the north side of the Bacon Hill crossing of the Amtrak Northeast Corridor.[1][37]
  • MD 7J is the unsigned designation for Industrial Park Road, a highway that connects MD 7 with an exit ramp from eastbound MD 43 in White Marsh.[1][38]
  • MD 7K is the unsigned designation for Patriotic Lane, a 0.13-mile (0.21 km) road which runs from MD 7C east to the end of state maintenance, where it continues as an unnamed road, west of Elkton.[1][39]The route was designated in 2012.[33]
  • MD 7L is the unsigned designation for an unnamed 0.075-mile (0.121 km) section of old alignment of MD 7 from MD 7C east to a dead end at a gate just south of MD 7C's eastern terminus at US 40 and MD 279 west of Elkton.[1]The route was designated in 2016.[40]

See also

[edit]

References

[edit]
  1. ^abcdefghijklmnopqrstuvwxyzHighway Information Services Division (December 31, 2013).Highway Location Reference.Maryland State Highway Administration.Retrieved2012-02-08.
  2. ^abcd"Maryland Route 7"(Map).Google Maps.Retrieved2010-11-12.
  3. ^"Maryland Route 7A"(Map).Google Maps.Retrieved2010-11-12.
  4. ^"Maryland Route 7B"(Map).Google Maps.Retrieved2010-11-12.
  5. ^ab"Maryland Route 7C"(Map).Google Maps.Retrieved2010-11-12.
  6. ^"Maryland Route 7D"(Map).Google Maps.Retrieved2013-12-24.
  7. ^abA History of Road Building in Maryland.Baltimore: Maryland State Roads Commission. 1958-12-15. pp.5,7, 34, 132–134.Retrieved2012-02-09.
  8. ^Gunpowder, MD quadrangle(Map) (1901 ed.). 1:48,000. 15 Minute Series (Topographic). United States Geological Survey.Retrieved2010-11-22.
  9. ^Clark, William Bullock (1899).Report on the Highways of Maryland.Baltimore: Maryland Geological Survey. pp. 218, 220.Retrieved2012-02-09.
  10. ^abcWeller, O.E.; Parran, Thomas; Miller, W.B.; Perry, John M.; Ramsay, Andrew; Smith, J. Frank (May 1916).Annual Reports of the State Roads Commission of Maryland(1912–1915 ed.). Baltimore: Maryland State Roads Commission. pp. 54, 110, 116, 124.Retrieved2012-02-09.
  11. ^abcMaryland Geological Survey (1921).Map of Maryland: Showing State Road System and State Aid Roads(PDF)(Map). Baltimore: Maryland Geological Survey.
  12. ^Maryland Geological Survey (1911).Map of Maryland: Showing State Road System and State Aid Roads Completed or Under Construction December 31, 1911(PDF)(Map). Baltimore: Maryland Geological Survey.
  13. ^abMaryland Geological Survey (1923).Map of Maryland: Showing State Road System and State Aid Roads(PDF)(Map). Baltimore: Maryland Geological Survey.
  14. ^abMackall, John N.; Darnall, R. Bennett; Brown, W.W. (January 1927).Annual Reports of the State Roads Commission of Maryland(1924–1926 ed.). Baltimore: Maryland State Roads Commission. pp. 29, 30, 44, 75, 84.Retrieved2012-02-09.
  15. ^Maryland Geological Survey (1927).Map of Maryland: Showing State Road System and State Aid Roads(PDF)(Map). Baltimore: Maryland Geological Survey.
  16. ^abUhl, G. Clinton; Bruce, Howard; Shaw, John K. (October 1, 1930).Report of the State Roads Commission of Maryland(1927–1930 ed.). Baltimore: Maryland State Roads Commission. pp. 67, 82, 83.Retrieved2012-02-09.
  17. ^abcByron, William D.; Lacy, Robert (December 28, 1934).Report of the State Roads Commission of Maryland(1931–1934 ed.). Baltimore: Maryland State Roads Commission. pp. 19, 32.Retrieved2012-02-09.
  18. ^abcBeall, J. Glenn; Jarboe, Elmer R.; Obrecht, George F., Sr. (March 4, 1939).Report of the State Roads Commission of Maryland(1937–1938 ed.). Baltimore: Maryland State Roads Commission. pp. 2, 4, 118.Retrieved2012-02-09.{{cite book}}:CS1 maint: multiple names: authors list (link)
  19. ^Maryland Geological Survey (1930).Map of Maryland Showing State Road System: State Aid Roads and Improved County Road Connections(Map). Baltimore: Maryland Geological Survey.
  20. ^Maryland Geological Survey (1933).Map of Maryland Showing State Road System: State Aid Roads and Improved County Road Connections(PDF)(Map). Baltimore: Maryland Geological Survey.
  21. ^abcMaryland State Roads Commission (1939).General Highway Map: State of Maryland(PDF)(Map). Baltimore: Maryland State Roads Commission.
  22. ^Tabler, H.E.; Wilkinson, C. Nice; Luthardt, Frank F. (December 4, 1936).Report of the State Roads Commission of Maryland(1935–1936 ed.). Baltimore: Maryland State Roads Commission. p. 79.Retrieved2012-02-09.
  23. ^abWhitman, Ezra B.; Webb, P. Watson; Thomas, W. Frank (March 15, 1941).Report of the State Roads Commission of Maryland(1939–1940 ed.). Baltimore: Maryland State Roads Commission. pp. 3, 25.Retrieved2012-02-09.
  24. ^Whitman, Ezra B.; Webb, P. Watson; Thomas, W. Frank (March 15, 1943).Report of the State Roads Commission of Maryland(1941–1942 ed.). Baltimore: Maryland State Roads Commission. p. 81.Retrieved2012-02-09.
  25. ^Maryland State Roads Commission (1940).Map of Maryland Showing Highways and Points of Interest(PDF)(Map). Baltimore: Maryland State Roads Commission.
  26. ^McCain, Russell H.; Bennett, Edgar T.; Kelly, Bramwell (November 12, 1954).Report of the State Roads Commission of Maryland(1953–1954 ed.). Baltimore: Maryland State Roads Commission. pp. 152, 180.Retrieved2012-02-09.
  27. ^Maryland State Highway Administration (1989).Maryland: Official Highway Map(PDF)(Map). Baltimore: Maryland State Highway Administration.
  28. ^Highway Information Services Division (December 31, 2000).Highway Location Reference.Maryland State Highway Administration.Retrieved2012-02-09.
  29. ^Maryland State Roads Commission (1950).Maryland: Official Highway Map(PDF)(Map). Baltimore: Maryland State Roads Commission.
  30. ^Highway Information Services Division (December 31, 2001).Highway Location Reference.Maryland State Highway Administration.Retrieved2012-02-09.
  31. ^Highway Information Services Division (December 31, 2003).Highway Location Reference.Maryland State Highway Administration.Retrieved2012-02-09.
  32. ^Highway Information Services Division (December 31, 2010).Highway Location Reference.Maryland State Highway Administration.Retrieved2012-02-09.
  33. ^abHighway Information Services Division (December 31, 2012).Highway Location Reference.Maryland State Highway Administration.Retrieved2013-12-24.
  34. ^Highway Information Services Division (December 31, 2018).Highway Location Reference.Maryland State Highway Administration.RetrievedMarch 21,2020.
  35. ^"Maryland Route 7BA"(Map).Google Maps.Retrieved2010-11-12.
  36. ^"Maryland Route 7E"(Map).Google Maps.Retrieved2010-11-12.
  37. ^"Maryland Route 7H"(Map).Google Maps.Retrieved2010-11-12.
  38. ^"Maryland Route 7J"(Map).Google Maps.Retrieved2010-11-12.
  39. ^"Maryland Route 7K"(Map).Google Maps.Retrieved2013-12-24.
  40. ^Highway Information Services Division (December 31, 2016).Highway Location Reference.Maryland State Highway Administration.Retrieved2017-08-28.
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