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Maryland Route 187

January 01, 1970

Maryland Route 187 (MD 187) is a state highway in the U.S. state of Maryland. Known as Old Georgetown Road, the highway runs 5.32 miles (8.56 km) from MD 355 and MD 410 in Bethesda north to Executive Boulevard in North Bethesda. MD 187 is a four- to six-lane highway that runs parallel to MD 355 through suburban areas of southern Montgomery County. The highway was paved through Bethesda by 1910. The remainder of MD 187 was constructed in the mid- to late 1920s. The highway was relocated at its northern end and expanded to a divided highway over most of its length in the late 1960s. MD 187's interchanges with Interstate 270 (I-270) and I-495 were built in the late 1950s and early 1960s, respectively; the former interchange was reconstructed in the early 2000s. The northern terminus was cut back from MD 355 to Executive Boulevard in 2016.

Maryland Route 187

Old Georgetown Road
Maryland Route 187 highlighted in red
Route information
Maintained by MDSHA
Length5.04 mi[1] (8.11 km)
Existed1927–present
Major junctions
South end MD 355 / MD 410 in Bethesda
Major intersections
North endExecutive Boulevard in North Bethesda
Location
CountryUnited States
StateMaryland
CountiesMontgomery
Highway system
← MD 186→ MD 188

Route description edit

 
View north along MD 187 in Bethesda

MD 187 begins at an intersection with MD 355 (Wisconsin Avenue) and westbound MD 410 (East–West Highway) next to the Bethesda station along Washington Metro's Red Line in downtown Bethesda. The state highway heads northwest as a two-lane one-way street to Woodmont Avenue. Southbound MD 187 traffic is required to turn north or south onto Woodmont Avenue. Woodmont Avenue, which becomes a southbound one-way street at the intersection, leads to Montgomery Lane, which provides access to MD 355 and eastbound MD 410 (Montgomery Avenue). MD 187 heads northwest from Woodmont Avenue as a four-lane highway with a center left-turn lane that passes through a five-way intersection with the eastern terminus of MD 188 (Wilson Lane), Arlington Road, and St. Elmo Avenue and leaves downtown Bethesda. The state highway veers north and becomes a six-lane divided highway north of Huntington Parkway at Suburban Hospital, which sits opposite the southern end of the National Institutes of Health campus. MD 187 intersects several entrances to the federal campus and passes to the east of the tiny village of Oakmont at its junction with Cedar Lane.[1][2]

 
MD 187 (Old Georgetown Road) at Kingswood Road in Bethesda

MD 187 enters North Bethesda at its diamond interchange with I-495 (Capital Beltway). The state highway intersects Democracy Boulevard, a county highway that heads west past Walter Johnson High School and the Westfield Montgomery shopping mall. North of Democracy Boulevard, MD 187 meets I-270 (Eisenhower Memorial Highway) at an extended diamond interchange whose ramps also connect with Rockledge Boulevard. The highway intersects Tuckerman Lane north of I-270 and continues northeast toward the White Flint area of North Bethesda. At its intersection with Executive Boulevard, MD 187 reaches its northern terminus, with Old Georgetown Road curving to the east as a county road and heading toward an intersection with MD 355 (Rockville Pike) just north of the North Bethesda station along Washington Metro's Red Line.[1][2]

MD 187 is a part of the National Highway System as a principal arterial for its entire length.[1][3]

Bicycle infrastructure edit

Bike lanes exist in both the northbound and southbound directions between Cedar Lane and Nicholson Lane. The 5-foot-wide lanes have an additional 2-foot-wide safety buffer between them and the travel lanes. [4] These lanes were installed in 2020 between Cedar Lane and Ryland Drive, in part because of the July 2019 death of a 17-year-old boy near Beech Avenue.[5] The bike lanes were extended in 2022 north to Nicholson Lane.[6]

There are two Capital Bikeshare stations on Old Georgetown Road, one is at its southern terminus with MD 355 (station 32048) and the other is across from NIH at Southwick Street (station 32039).[7]

The Bethesda Trolley Trail runs roughly parallel to Old Georgetown Road from Bethesda to White Flint. Between NIH and Charles Street the trail is co-located with the sidewalk on the east side of Old Georgetown Road.[8]

There is a network of signed bike route to the west of Old Georgetown Road from Democracy Blvd to downtown Bethesda with multiple signed connections to Old Georgetown Road.[9]

  • Bicycle Infrastructure on MD 187
  •  
    Bike lanes at Old Georgetown Road and Beech Avenue
  •  
    Bikeshare Station: Old Georgetown Road and Southwick Street in Bethesda
  •  
    Bethesda Trolley Trail along Old Georgetown Road in Bethesda

History edit

Old Georgetown Road is part of the original highway between Rockville and Georgetown. This course was used by portions of General Edward Braddock's army from Alexandria, Virginia, to Cumberland, Maryland, prior to the start of the ill-fated Braddock Expedition in 1755.[10] The Rockville and Georgetown Turnpike, which opened in 1818, included a descent into the valley of Rock Creek that bypassed MD 187's portion of the Rockville–Georgetown highway.[11] The portion of Old Georgetown Road from that turnpike (now MD 355) in Bethesda to the community of Alta Vista at Cedar Lane was paved as a macadam road by Montgomery County with state aid by 1910.[12][13] MD 187 was extended to what is now Democracy Boulevard in 1924.[14][15] The highway was extended as a macadam road to Tuckerman Lane in 1928.[16] MD 187 was completed with a concrete section northeast to U.S. Route 240 (now MD 355) in 1929.[17][18]

 
Southern terminus of MD 187 at MD 355 and MD 410 in downtown Bethesda

MD 187 was widened with a pair of 3-foot-wide (0.91 m) concrete shoulders from Bethesda to Alta Vista between 1924 and 1926.[14] That same stretch was widened with another concrete shoulder and resurfaced in 1940.[19] MD 187 was widened a third time in downtown Bethesda with a 9-foot-wide (2.7 m) bituminous shoulder in 1948.[20] The highway's original diamond interchange with the Washington National Pike (now I-270) was built between 1957 and 1959.[21][22][23] MD 187 was the southern end of the freeway from then until it was extended to Rockville Pike in 1960.[22][24] The highway's interchange with I-495 was completed in 1964.[25]

MD 187 was relocated to an orthogonal intersection with MD 355 at its northern end in 1967.[26] This replaced an acute intersection with MD 355 north of Montrose Road now named Hoya Street.[27] The old alignment remained in the state highway system until 1987 when the part north of Montrose Road became a ramp from southbound MD 355 to Montrose Road.[26][28] MD 187 was expanded to a multi-lane divided highway from MD 355 south to Alta Vista concurrent with the 1967 relocation.[26] The divided highway was extended south to its present southern end north of Huntington Parkway in 1968.[29] MD 187 was made one-way northbound between MD 355 and Woodmont Avenue by 1999.[30] The highway's interchange with I-270 was reconstructed from a standard diamond to its present form with ramps to and from Rockledge Boulevard in 2002.[31] The northern terminus of MD 187 was cut back to its current location on July 13, 2016 when the portion of Old Georgetown Road between Executive Boulevard and MD 355 was transferred to county maintenance.[32]

Junction list edit

The entire route is in Montgomery County.

Locationmi
[1]		kmDestinationsNotes
Bethesda0.000.00   MD 355 (Wisconsin Avenue) / MD 410 (East–West Highway)Southern terminus; western terminus of MD 410; MD 187 begins one-way northbound
0.170.27 
  
 
  Woodmont Avenue to MD 355 (Wisconsin Avenue) / MD 410 east (Montgomery Avenue) – Rockville, Washington, Silver Spring		Southbound direction of MD 187 ends; southbound traffic must turn onto Woodmont Avenue
0.310.50 
  MD 188 west (Wilson Lane) / Arlington Road south / St. Elmo Avenue north – Glen Echo		Eastern terminus of MD 188; no direct access from eastbound MD 188 to northbound MD 187
2.644.25  I-495 (Capital Beltway) – Baltimore, Silver Spring, Northern Virginia, FairfaxI-495 Exit 36
North Bethesda3.766.05  
 
  I-270 (Eisenhower Memorial Highway) to I-495 east / Rockledge Drive – Frederick, Silver Spring		I-270 Exit 1
5.048.11Executive Boulevard / Old Georgetown Road northNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Auxiliary route edit

MD 187B is the designation for the 0.08-mile (0.13 km) section of Rockledge Drive within MD 187's interchange with I-270 in North Bethesda.[1][33] The state highway was designated in 2002 when the highway's interchange with I-270 was completed.[31]

See also edit

References edit

  1. ^ a b c d e f Highway Information Services Division (December 31, 2013). Highway Location Reference. Maryland State Highway Administration. Retrieved 2013-09-02.
    • Montgomery County (PDF).
  2. ^ a b Google (2011-05-15). "Maryland Route 187" (Map). Google Maps. Google. Retrieved 2011-05-15.
  3. ^ National Highway System: Washington, DC-MD-VA (PDF) (Map). Federal Highway Administration. October 1, 2012. Retrieved 2015-01-13.
  4. ^ "New bike lane coming to Montgomery Co. road where teen cyclists were struck". WTOP News. May 4, 2020. Retrieved 2021-04-17.
  5. ^ "Teen cyclist dies after being struck by car in Bethesda". WTOP News. August 1, 2019. Retrieved 2021-04-17.
  6. ^ "Residents called for safety measures on Old Georgetown Road. Then the bike lanes showed up". Bethesda Magazine. December 27, 2022. Retrieved 2022-12-29.
  7. ^ "Capital Bikeshare Map". Lyft Inc. Retrieved 2021-05-01.
  8. ^ "Bethesda Trolley Trail Map" (PDF). MCDOT. 2009.
  9. ^ "Bike Map Viewer". Montgomery County, Maryland. Retrieved 2021-05-01.
  10. ^ Baker, Norman L. (2013). Braddock's Road: Mapping the British Expedition from Alexandria to the Monongahela. Charleston, SC: The History Press. p. 27. ISBN 978-1626191143.
  11. ^ Hirschman, Carolyn (January 24, 2000). "Progress Clogs Rockville Pike". The Washington Times. Washington, DC: News World Communications.
  12. ^ Maryland Geological Survey (1910). Map of Maryland (PDF) (Map). Baltimore: Maryland Geological Survey.
  13. ^ Maryland Geological Survey (1921). Map of Maryland: Showing State Road System and State Aid Roads (PDF) (Map). Baltimore: Maryland Geological Survey.
  14. ^ a b Mackall, 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. 42, 90. Retrieved 2013-09-02.
  15. ^ Maryland Geological Survey (1927). Map of Maryland: Showing State Road System and State Aid Roads (PDF) (Map). Baltimore: Maryland Geological Survey.
  16. ^ Maryland Geological Survey (1928). Map of Maryland: Showing State Road System and State Aid Roads (PDF) (Map). Baltimore: Maryland Geological Survey.
  17. ^ Uhl, 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. p. 220. Retrieved 2013-09-02.
  18. ^ Maryland Geological Survey (1930). Map of Maryland Showing State Road System: State Aid Roads and Improved County Road Connections (Map). Baltimore: Maryland Geological Survey.
  19. ^ Whitman, 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. p. 27. Retrieved 2013-09-02.
  20. ^ Reindollar, Robert M.; George, Joseph M.; McCain, Russell H. (February 15, 1949). Report of the State Roads Commission of Maryland (1947–1948 ed.). Baltimore: Maryland State Roads Commission. p. 19. Retrieved 2013-09-02.
  21. ^ Bonnell, Robert O.; Bennett, Edgar T.; McMullen, John J. (December 15, 1958). Report of the State Roads Commission of Maryland (1957–1958 ed.). Baltimore: Maryland State Roads Commission. p. 52. Retrieved 2013-09-02.
  22. ^ a b Maryland State Roads Commission (1959). Maryland: Official Highway Map (PDF) (Map). Baltimore: Maryland State Roads Commission.
  23. ^ Rockville, MD quadrangle (Map) (1965 ed.). 1:24,000. 7 1/2 Minute Series (Topographic). United States Geological Survey.
  24. ^ Maryland State Roads Commission (1960). Maryland: Official Highway Map (PDF) (Map). Baltimore: Maryland State Roads Commission.
  25. ^ Maryland State Roads Commission (1964). Maryland: Official Highway Map (PDF) (Map). Baltimore: Maryland State Roads Commission.
  26. ^ a b c Maryland State Roads Commission (1967). Maryland: Official Highway Map (PDF) (Map). Baltimore: Maryland State Roads Commission.
  27. ^ Kensington, MD quadrangle (Map) (1965 ed.). 1:24,000. 7 1/2 Minute Series (Topographic). United States Geological Survey.
  28. ^ Maryland State Highway Administration (1987). Maryland: Official Highway Map (PDF) (Map). Baltimore: Maryland State Highway Administration.
  29. ^ Maryland State Roads Commission (1968). Maryland: Official Highway Map (PDF) (Map). Baltimore: Maryland State Roads Commission.
  30. ^ Highway Information Services Division (December 31, 1999). Highway Location Reference. Maryland State Highway Administration. Retrieved 2013-09-02.
    • Montgomery County (PDF).
  31. ^ a b Highway Information Services Division (December 31, 2002). Highway Location Reference. Maryland State Highway Administration. Retrieved 2013-09-02.
    • Montgomery County (PDF).
  32. ^ Highway Information Services Division (December 31, 2016). Highway Location Reference. Maryland State Highway Administration. Retrieved 2017-08-29.
    • Montgomery County (PDF).
  33. ^ Google (2011-05-15). "Maryland Route 187B" (Map). Google Maps. Google. Retrieved 2011-05-15.

External links edit

 
Wikimedia Commons has media related to Maryland Route 187.
KML file (edit • help)
Template:Attached KML/Maryland Route 187
KML is from Wikidata
  • MDRoads: MD 187

January 01, 1970
maryland, route, state, highway, state, maryland, known, georgetown, road, highway, runs, miles, from, bethesda, north, executive, boulevard, north, bethesda, four, lane, highway, that, runs, parallel, through, suburban, areas, southern, montgomery, county, hi. Maryland Route 187 MD 187 is a state highway in the U S state of Maryland Known as Old Georgetown Road the highway runs 5 32 miles 8 56 km from MD 355 and MD 410 in Bethesda north to Executive Boulevard in North Bethesda MD 187 is a four to six lane highway that runs parallel to MD 355 through suburban areas of southern Montgomery County The highway was paved through Bethesda by 1910 The remainder of MD 187 was constructed in the mid to late 1920s The highway was relocated at its northern end and expanded to a divided highway over most of its length in the late 1960s MD 187 s interchanges with Interstate 270 I 270 and I 495 were built in the late 1950s and early 1960s respectively the former interchange was reconstructed in the early 2000s The northern terminus was cut back from MD 355 to Executive Boulevard in 2016 Maryland Route 187Old Georgetown RoadMaryland Route 187 highlighted in redRoute informationMaintained by MDSHALength5 04 mi 1 8 11 km Existed1927 presentMajor junctionsSouth endMD 355 MD 410 in BethesdaMajor intersectionsMD 188 in Bethesda I 495 in Bethesda I 270 in North BethesdaNorth endExecutive Boulevard in North BethesdaLocationCountryUnited StatesStateMarylandCountiesMontgomeryHighway systemMaryland highway system Interstate US State Scenic Byways MD 186 MD 188 Contents 1 Route description 2 Bicycle infrastructure 3 History 4 Junction list 5 Auxiliary route 6 See also 7 References 8 External linksRoute description edit nbsp View north along MD 187 in Bethesda MD 187 begins at an intersection with MD 355 Wisconsin Avenue and westbound MD 410 East West Highway next to the Bethesda station along Washington Metro s Red Line in downtown Bethesda The state highway heads northwest as a two lane one way street to Woodmont Avenue Southbound MD 187 traffic is required to turn north or south onto Woodmont Avenue Woodmont Avenue which becomes a southbound one way street at the intersection leads to Montgomery Lane which provides access to MD 355 and eastbound MD 410 Montgomery Avenue MD 187 heads northwest from Woodmont Avenue as a four lane highway with a center left turn lane that passes through a five way intersection with the eastern terminus of MD 188 Wilson Lane Arlington Road and St Elmo Avenue and leaves downtown Bethesda The state highway veers north and becomes a six lane divided highway north of Huntington Parkway at Suburban Hospital which sits opposite the southern end of the National Institutes of Health campus MD 187 intersects several entrances to the federal campus and passes to the east of the tiny village of Oakmont at its junction with Cedar Lane 1 2 nbsp MD 187 Old Georgetown Road at Kingswood Road in Bethesda MD 187 enters North Bethesda at its diamond interchange with I 495 Capital Beltway The state highway intersects Democracy Boulevard a county highway that heads west past Walter Johnson High School and the Westfield Montgomery shopping mall North of Democracy Boulevard MD 187 meets I 270 Eisenhower Memorial Highway at an extended diamond interchange whose ramps also connect with Rockledge Boulevard The highway intersects Tuckerman Lane north of I 270 and continues northeast toward the White Flint area of North Bethesda At its intersection with Executive Boulevard MD 187 reaches its northern terminus with Old Georgetown Road curving to the east as a county road and heading toward an intersection with MD 355 Rockville Pike just north of the North Bethesda station along Washington Metro s Red Line 1 2 MD 187 is a part of the National Highway System as a principal arterial for its entire length 1 3 Bicycle infrastructure editBike lanes exist in both the northbound and southbound directions between Cedar Lane and Nicholson Lane The 5 foot wide lanes have an additional 2 foot wide safety buffer between them and the travel lanes 4 These lanes were installed in 2020 between Cedar Lane and Ryland Drive in part because of the July 2019 death of a 17 year old boy near Beech Avenue 5 The bike lanes were extended in 2022 north to Nicholson Lane 6 There are two Capital Bikeshare stations on Old Georgetown Road one is at its southern terminus with MD 355 station 32048 and the other is across from NIH at Southwick Street station 32039 7 The Bethesda Trolley Trail runs roughly parallel to Old Georgetown Road from Bethesda to White Flint Between NIH and Charles Street the trail is co located with the sidewalk on the east side of Old Georgetown Road 8 There is a network of signed bike route to the west of Old Georgetown Road from Democracy Blvd to downtown Bethesda with multiple signed connections to Old Georgetown Road 9 Bicycle Infrastructure on MD 187 nbsp Bike lanes at Old Georgetown Road and Beech Avenue nbsp Bikeshare Station Old Georgetown Road and Southwick Street in Bethesda nbsp Bethesda Trolley Trail along Old Georgetown Road in BethesdaHistory editOld Georgetown Road is part of the original highway between Rockville and Georgetown This course was used by portions of General Edward Braddock s army from Alexandria Virginia to Cumberland Maryland prior to the start of the ill fated Braddock Expedition in 1755 10 The Rockville and Georgetown Turnpike which opened in 1818 included a descent into the valley of Rock Creek that bypassed MD 187 s portion of the Rockville Georgetown highway 11 The portion of Old Georgetown Road from that turnpike now MD 355 in Bethesda to the community of Alta Vista at Cedar Lane was paved as a macadam road by Montgomery County with state aid by 1910 12 13 MD 187 was extended to what is now Democracy Boulevard in 1924 14 15 The highway was extended as a macadam road to Tuckerman Lane in 1928 16 MD 187 was completed with a concrete section northeast to U S Route 240 now MD 355 in 1929 17 18 nbsp Southern terminus of MD 187 at MD 355 and MD 410 in downtown Bethesda MD 187 was widened with a pair of 3 foot wide 0 91 m concrete shoulders from Bethesda to Alta Vista between 1924 and 1926 14 That same stretch was widened with another concrete shoulder and resurfaced in 1940 19 MD 187 was widened a third time in downtown Bethesda with a 9 foot wide 2 7 m bituminous shoulder in 1948 20 The highway s original diamond interchange with the Washington National Pike now I 270 was built between 1957 and 1959 21 22 23 MD 187 was the southern end of the freeway from then until it was extended to Rockville Pike in 1960 22 24 The highway s interchange with I 495 was completed in 1964 25 MD 187 was relocated to an orthogonal intersection with MD 355 at its northern end in 1967 26 This replaced an acute intersection with MD 355 north of Montrose Road now named Hoya Street 27 The old alignment remained in the state highway system until 1987 when the part north of Montrose Road became a ramp from southbound MD 355 to Montrose Road 26 28 MD 187 was expanded to a multi lane divided highway from MD 355 south to Alta Vista concurrent with the 1967 relocation 26 The divided highway was extended south to its present southern end north of Huntington Parkway in 1968 29 MD 187 was made one way northbound between MD 355 and Woodmont Avenue by 1999 30 The highway s interchange with I 270 was reconstructed from a standard diamond to its present form with ramps to and from Rockledge Boulevard in 2002 31 The northern terminus of MD 187 was cut back to its current location on July 13 2016 when the portion of Old Georgetown Road between Executive Boulevard and MD 355 was transferred to county maintenance 32 Junction list editThe entire route is in Montgomery County Locationmi 1 kmDestinationsNotes Bethesda0 000 00 nbsp nbsp MD 355 Wisconsin Avenue MD 410 East West Highway Southern terminus western terminus of MD 410 MD 187 begins one way northbound 0 170 27 nbsp nbsp nbsp nbsp nbsp Woodmont Avenue to MD 355 Wisconsin Avenue MD 410 east Montgomery Avenue Rockville Washington Silver SpringSouthbound direction of MD 187 ends southbound traffic must turn onto Woodmont Avenue 0 310 50 nbsp nbsp MD 188 west Wilson Lane Arlington Road south St Elmo Avenue north Glen EchoEastern terminus of MD 188 no direct access from eastbound MD 188 to northbound MD 187 2 644 25 nbsp I 495 Capital Beltway Baltimore Silver Spring Northern Virginia FairfaxI 495 Exit 36 North Bethesda3 766 05 nbsp nbsp nbsp nbsp I 270 Eisenhower Memorial Highway to I 495 east Rockledge Drive Frederick Silver SpringI 270 Exit 1 5 048 11Executive Boulevard Old Georgetown Road northNorthern terminus 1 000 mi 1 609 km 1 000 km 0 621 mi Incomplete accessAuxiliary route editMD 187B is the designation for the 0 08 mile 0 13 km section of Rockledge Drive within MD 187 s interchange with I 270 in North Bethesda 1 33 The state highway was designated in 2002 when the highway s interchange with I 270 was completed 31 See also edit nbsp Maryland Roads portalReferences edit a b c d e f Highway Information Services Division December 31 2013 Highway Location Reference Maryland State Highway Administration Retrieved 2013 09 02 Montgomery County PDF a b Google 2011 05 15 Maryland Route 187 Map Google Maps Google Retrieved 2011 05 15 National Highway System Washington DC MD VA PDF Map Federal Highway Administration October 1 2012 Retrieved 2015 01 13 New bike lane coming to Montgomery Co road where teen cyclists were struck WTOP News May 4 2020 Retrieved 2021 04 17 Teen cyclist dies after being struck by car in Bethesda WTOP News August 1 2019 Retrieved 2021 04 17 Residents called for safety measures on Old Georgetown Road Then the bike lanes showed up Bethesda Magazine December 27 2022 Retrieved 2022 12 29 Capital Bikeshare Map Lyft Inc Retrieved 2021 05 01 Bethesda Trolley Trail Map PDF MCDOT 2009 Bike Map Viewer Montgomery County Maryland Retrieved 2021 05 01 Baker Norman L 2013 Braddock s Road Mapping the British Expedition from Alexandria to the Monongahela Charleston SC The History Press p 27 ISBN 978 1626191143 Hirschman Carolyn January 24 2000 Progress Clogs Rockville Pike The Washington Times Washington DC News World Communications Maryland Geological Survey 1910 Map of Maryland PDF Map Baltimore Maryland Geological Survey Maryland Geological Survey 1921 Map of Maryland Showing State Road System and State Aid Roads PDF Map Baltimore Maryland Geological Survey a b Mackall 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 42 90 Retrieved 2013 09 02 Maryland Geological Survey 1927 Map of Maryland Showing State Road System and State Aid Roads PDF Map Baltimore Maryland Geological Survey Maryland Geological Survey 1928 Map of Maryland Showing State Road System and State Aid Roads PDF Map Baltimore Maryland Geological Survey Uhl 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 p 220 Retrieved 2013 09 02 Maryland Geological Survey 1930 Map of Maryland Showing State Road System State Aid Roads and Improved County Road Connections Map Baltimore Maryland Geological Survey Whitman 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 p 27 Retrieved 2013 09 02 Reindollar Robert M George Joseph M McCain Russell H February 15 1949 Report of the State Roads Commission of Maryland 1947 1948 ed Baltimore Maryland State Roads Commission p 19 Retrieved 2013 09 02 Bonnell Robert O Bennett Edgar T McMullen John J December 15 1958 Report of the State Roads Commission of Maryland 1957 1958 ed Baltimore Maryland State Roads Commission p 52 Retrieved 2013 09 02 a b Maryland State Roads Commission 1959 Maryland Official Highway Map PDF Map Baltimore Maryland State Roads Commission Rockville MD quadrangle Map 1965 ed 1 24 000 7 1 2 Minute Series Topographic United States Geological Survey Maryland State Roads Commission 1960 Maryland Official Highway Map PDF Map Baltimore Maryland State Roads Commission Maryland State Roads Commission 1964 Maryland Official Highway Map PDF Map Baltimore Maryland State Roads Commission a b c Maryland State Roads Commission 1967 Maryland Official Highway Map PDF Map Baltimore Maryland State Roads Commission Kensington MD quadrangle Map 1965 ed 1 24 000 7 1 2 Minute Series Topographic United States Geological Survey Maryland State Highway Administration 1987 Maryland Official Highway Map PDF Map Baltimore Maryland State Highway Administration Maryland State Roads Commission 1968 Maryland Official Highway Map PDF Map Baltimore Maryland State Roads Commission Highway Information Services Division December 31 1999 Highway Location Reference Maryland State Highway Administration Retrieved 2013 09 02 Montgomery County PDF a b Highway Information Services Division December 31 2002 Highway Location Reference Maryland State Highway Administration Retrieved 2013 09 02 Montgomery County PDF Highway Information Services Division December 31 2016 Highway Location Reference Maryland State Highway Administration Retrieved 2017 08 29 Montgomery County PDF Google 2011 05 15 Maryland Route 187B Map Google Maps Google Retrieved 2011 05 15 External links edit nbsp Wikimedia Commons has media related to Maryland Route 187 KML file edit help Template Attached KML Maryland Route 187KML is from Wikidata MDRoads MD 187 Retrieved from https en wikipedia org w index php title Maryland Route 187 amp oldid 1194392934 Auxiliary route, wikipedia, wiki, book, books, library,

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