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|map=Clara Barton Parkway map.svg
|map=Clara Barton Parkway map.svg
|length_mi=6.8
|length_mi=6.8
|length_round=1
|length_ref=<ref name="Google Maps Clara Barton Parkway"/>
|length_ref=<ref name="Google Maps Clara Barton Parkway"/>
|tourist={{jct|state=MD|COC}}
|tourist={{jct|state=MD|COC}}
|restrictions=No commercial vehicles; one-way traffic during rush hour
|restrictions=No trucks; one-way traffic during rush hour
|established=1930<ref name="Wash Post Mystery Bridge"/>
|established=1930<ref name="Wash Post Mystery Bridge"/>
|maint=[[National Park Service|NPS]]
|direction_a=West
|direction_a=West
|terminus_a=[[MacArthur Boulevard (Washington, D.C.)|MacArthur Boulevard]] in [[Potomac, MD]]
|terminus_a=[[MacArthur Boulevard (Washington, D.C.)|MacArthur Boulevard]] in [[Potomac, MD]]
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|counties=[[Montgomery County, Maryland|Montgomery]]
|counties=[[Montgomery County, Maryland|Montgomery]]
|states=[[Maryland]], [[District of Columbia]]
|states=[[Maryland]], [[District of Columbia]]
|browse={{infobox road/browselinks/USA|type=NSB}}{{infobox road/browselinks/USA|state=DC}}{{infobox road/browselinks/USA|state=MD}}
|system1={{infobox road/browselinks/USA|type=NSB}}
|system2={{infobox road/browselinks/USA|state=DC}}
}}
}}


'''Clara Barton Parkway''' is an automobile [[parkway]] in the U.S. state of [[Maryland]] and the [[District of Columbia]]. The highway runs {{convert|6.8|mi|km}} from [[MacArthur Boulevard (Washington, D.C.)|MacArthur Boulevard]] in [[Carderock, Maryland]], east to [[Canal Road (Washington, D.C.)|Canal Road]] at the [[Chain Bridge (Potomac River)|Chain Bridge]] in [[Washington, D.C.|Washington]]. Clara Barton Parkway is a two- to four-lane parkway that parallels the [[Potomac River]] and the [[Chesapeake and Ohio Canal]] (C&O) in southwestern [[Montgomery County, Maryland]], and the far western corner of Washington. The parkway provides access to the communities of [[Cabin John, Maryland|Cabin John]] and [[Glen Echo, Maryland|Glen Echo]] and several units of the [[Chesapeake and Ohio Canal National Historical Park]]. The Maryland portion of the [[George Washington Memorial Parkway]] was constructed from Carderock past [[Interstate 495 (Capital Beltway)|Interstate 495]] (I-495) to Glen Echo in the early to mid-1960s. The parkway was proposed to continue west to [[Great Falls (Potomac River)|Great Falls]] and east to [[Georgetown (Washington, D.C.)|Georgetown]]. However, these proposals never came to fruition and the parkway was extended only to the Chain Bridge in the early 1970s. The Maryland portion of the George Washington Memorial Parkway was renamed for [[Clara Barton]], the founder of the [[American Red Cross]], in 1989.
The '''Clara Barton Parkway''' is a [[parkway]] in the U.S. state of [[Maryland]] and the [[District of Columbia]]. The highway runs {{convert|6.8|mi|km}} from [[MacArthur Boulevard (Washington, D.C.)|MacArthur Boulevard]] in [[Carderock, Maryland]], east to [[Canal Road (Washington, D.C.)|Canal Road]] at the [[Chain Bridge (Potomac River)|Chain Bridge]] in [[Washington, D.C.|Washington]]. The Clara Barton Parkway is a two- to four-lane parkway that parallels the [[Potomac River]] and the [[Chesapeake and Ohio Canal]] (C&O) in southwestern [[Montgomery County, Maryland]], and the far western corner of Washington. The parkway provides access to the communities of [[Cabin John, Maryland|Cabin John]] and [[Glen Echo, Maryland|Glen Echo]] and several units of the [[Chesapeake and Ohio Canal National Historical Park]]. The Maryland portion of the [[George Washington Memorial Parkway]] was constructed from Carderock past [[Interstate 495 (Capital Beltway)|Interstate 495]] (I-495) to Glen Echo in the early to mid-1960s. The parkway was proposed to continue west to [[Great Falls (Potomac River)|Great Falls]] and east to [[Georgetown (Washington, D.C.)|Georgetown]]. However, these proposals never came to fruition and the parkway was extended only to the Chain Bridge in the early 1970s. The Maryland portion of the George Washington Memorial Parkway was renamed in 1989 for [[Clara Barton]], the founder of the [[American Red Cross]], and whose [[Clara_Barton_National_Historic_Site| original headquarters]] is located in Glen Echo.


==Route description==
==Route description==
[[File:2016-10-04 12 39 00 View northwest at the southeast end of the Clara Barton Parkway in Washington, D.C..jpg|thumb|right|View northwest at the southeast end of the parkway]]
[[File:2016-10-04 12 39 00 View northwest at the southeast end of the Clara Barton Parkway in Washington, D.C..jpg|thumb|right|View northwest at the southeast end of the parkway]]
Clara Barton Parkway begins at an intersection with MacArthur Boulevard in Carderock. MacArthur Boulevard heads west toward Great Falls and the affluent community of [[Potomac, Maryland|Potomac]]. Clara Barton Parkway heads east as a two-lane highway that expands to a four-lane divided highway ahead of its [[diamond interchange]] with an access road to the [[Carderock Division of the Naval Surface Warfare Center]] to the north, which features the [[David Taylor Model Basin]], and Carderock Recreation Area of the Chesapeake and Ohio (C&O) Canal to the south. East of the naval lab, the two roadways split for the parkway's six-ramp interchange with I-495 (Capital Beltway). There is no direct access from westbound Clara Barton Parkway to northbound I-495 or from southbound I-495 to the eastbound parkway. The parkway roadways come together in Cabin John just west of parking areas accessible from the eastbound direction to C&O Canal Lock 10 and C&O Canal Lock 8 and River Center. Access to Cabin John is provided by a diamond interchange to a road connecting the parkway with MacArthur Boulevard in that community.<ref name="Google Maps Clara Barton Parkway"/>
The Clara Barton Parkway begins at an intersection with MacArthur Boulevard in Carderock. MacArthur Boulevard heads west toward Great Falls and the affluent community of [[Potomac, Maryland|Potomac]]. The Clara Barton Parkway heads east as a two-lane surface road that becomes a four-lane [[controlled-access highway|freeway]] ahead of its [[diamond interchange]] with an access road to the [[Carderock Division of the Naval Surface Warfare Center]] to the north, which features the [[David Taylor Model Basin]], and Carderock Recreation Area of the Chesapeake and Ohio (C&O) Canal to the south. East of the naval lab, the two roadways split for the parkway's six-ramp interchange with I-495 (Capital Beltway). There is no direct access from the Clara Barton Parkway westbound to I-495 north or from I-495 south to the parkway eastbound. The parkway roadways come together in Cabin John just west of parking areas accessible from the eastbound direction to C&O Canal Lock 10 and C&O Canal Lock 8 and River Center. Access to Cabin John is provided by a diamond interchange to a road connecting the parkway with MacArthur Boulevard in that community.<ref name="Google Maps Clara Barton Parkway"/>


Clara Barton Parkway reduces to one lane eastbound as it crosses [[Cabin John Creek (Potomac River)|Cabin John Creek]] and meets [[Cabin John Parkway]] at a partial interchange featuring ramps from westbound Clara Barton Parkway to northbound Cabin John Parkway and from Cabin John Parkway to eastbound Clara Barton Parkway, which becomes two lanes again. At this point, the parkway passes in front of the historic [[Union Arch Bridge]] which spans the creek and carries the [[Washington Aqueduct]] and [[MacArthur Boulevard]]. The parkway continues east to its final interchange, which provides access to MacArthur Boulevard in Glen Echo, the location of [[Glen Echo Park, Maryland|Glen Echo Park]] and [[Clara Barton National Historic Site]]. The interchange features a U-turn ramp from the eastbound direction to the westbound lanes of the parkway, a tight right-turn ramp from the access road to westbound Clara Barton Parkway, and an unused bridge over the westbound direction. There is no access from MacArthur Boulevard to the eastbound parkway.<ref name="Google Maps Clara Barton Parkway"/>
The Clara Barton Parkway reduces to one lane eastbound as it crosses [[Cabin John Creek (Potomac River)|Cabin John Creek]] and meets the [[Cabin John Parkway]] at a partial interchange featuring ramps from the Clara Barton Parkway westbound to the Cabin John Parkway and from the Cabin John Parkway to the Clara Barton Parkway eastbound, which becomes two lanes again. At this point, the parkway passes in front of the historic [[Union Arch Bridge]] which spans the creek and carries the [[Washington Aqueduct]] and [[MacArthur Boulevard]]. The parkway continues east to its final interchange, which provides access to MacArthur Boulevard in Glen Echo, the location of [[Glen Echo Park, Maryland|Glen Echo Park]] and [[Clara Barton National Historic Site]]. The interchange features a U-turn ramp from the eastbound direction to the westbound lanes of the parkway, a tight right-turn ramp from the access road to westbound Clara Barton Parkway, and an unused bridge over the westbound direction. There is no access from MacArthur Boulevard to the eastbound parkway.<ref name="Google Maps Clara Barton Parkway"/>


[[Image:Union Arch Bridge MD 2008.jpg |275px| thumb |View of Union Arch Bridge from Clara Barton Parkway as it passes over Cabin John Creek.]] East of Glen Echo, Clara Barton Parkway reduces to a two-lane undivided highway that closely parallels MacArthur Boulevard on the hillside to the north. The parkway passes a pair of parking areas for Little Falls before temporarily expanding to a four-lane divided highway while passing a third parking area for C&O Canal Lock 6. Clara Barton Parkway crosses [[Little Falls Branch (Potomac River)|Little Falls Branch]] and enters the District of Columbia before reaching its eastern terminus at an intersection with Canal Road and Chain Bridge Road. Canal Road heads east toward Georgetown while Chain Bridge Road crosses the Chain Bridge into [[Arlington, Virginia]] to connect with Virginia State Routes [[Virginia State Route 120|120]] and [[Virginia State Route 123|123]].<ref name="Google Maps Clara Barton Parkway"/>
[[Image:Union Arch Bridge MD 2008.jpg |275px| thumb |View of Union Arch Bridge from Clara Barton Parkway as it passes over Cabin John Creek.]] East of Glen Echo, the Clara Barton Parkway reverts to a two-lane surface road that closely parallels MacArthur Boulevard on the hillside to the north. The parkway passes a pair of parking areas for Little Falls before passing a third parking area for C&O Canal Lock 6. This segment of the parkway includes two pedestrian overpasses providing access from MacArthur Boulevard and Ridge Drive respectively, and aligned with pedestrian crossing over the C&O Canal below, offering access to the canal’s towpath. The first pedestrian overpass is approximately half-way between Lock 6 and 7 (also aligning with [[List of islands of Maryland| Sycamore Island]]) and the second at Lock 5. The Clara Barton Parkway crosses [[Little Falls Branch (Potomac River)|Little Falls Branch]] and enters the District of Columbia before reaching its eastern terminus at an intersection with Canal Road and Chain Bridge Road. Canal Road heads east toward Georgetown while Chain Bridge Road crosses the Chain Bridge into [[Arlington, Virginia]] to connect with Virginia State Routes [[Virginia State Route 120|120]] and [[Virginia State Route 123|123]].<ref name="Google Maps Clara Barton Parkway"/> Adjacent to the parkway’s terminus is access to the [[Capital Crescent Trail]].


Commercial vehicles, including trucks, are prohibited from Clara Barton Parkway without a permit from the [[National Park Service]], which maintains the highway. Speed limits on the parkway are {{convert|30|mph|km/h}} from the western terminus to the Carderock interchange, {{convert|50|mph|km/h}} from the Carderock interchange to the Glen Echo interchange, and {{convert|35|mph|km/h}} from the Glen Echo interchange to the Chain Bridge. Clara Barton Parkway operates as a one-way road between the Glen Echo interchange and its eastern terminus at the Chain Bridge Monday to Friday. Traffic flows eastbound only toward Washington from 6:15&nbsp;a.m. to 10 a.m. and westbound only toward Glen Echo from 2:45&nbsp;p.m. to 7:15&nbsp;p.m.<ref name="Parkway Regulations"/> Clara Barton Parkway is a part of the [[National Highway System (United States)|National Highway System]] as a principal arterial for its entire length.<ref name="National Highway System"/>
Commercial vehicles, including trucks, are prohibited from the Clara Barton Parkway without a permit from the [[National Park Service]], which maintains the highway. Speed limits on the parkway are {{convert|30|mph|km/h}} from the western terminus to the Carderock interchange, {{convert|50|mph|km/h}} from the Carderock interchange to the Glen Echo interchange, and {{convert|35|mph|km/h}} from the Glen Echo interchange to the Chain Bridge. The Clara Barton Parkway operates as a one-way road between the Glen Echo interchange and its eastern terminus at the Chain Bridge Monday to Friday. Traffic flows eastbound only toward Washington from 6:15&nbsp;a.m. to 10 a.m. and westbound only toward Glen Echo from 2:45&nbsp;p.m. to 7:15&nbsp;p.m.<ref name="Parkway Regulations"/> The Clara Barton Parkway is a part of the [[National Highway System (United States)|National Highway System]] as a principal arterial for its entire length.<ref name="National Highway System"/>


==History==
==History==
[[Image:IMG 2237 - Clara Barton Pkwy at NSWC (looking west).JPG|thumb|left|Clara Barton Parkway looking west from the Carderock interchange]]
[[Image:IMG 2237 - Clara Barton Pkwy at NSWC (looking west).JPG|thumb|left|Clara Barton Parkway looking west from the Carderock interchange]]
Congress approved the construction of parkways on both sides of the Potomac River from Great Falls to [[Fort Washington, Maryland|Fort Washington]] and [[Mount Vernon]] in Maryland and [[Virginia]], respectively, in 1930.<ref name="Wash Post Mystery Bridge"/> Construction on what was originally named the George Washington Memorial Parkway on the Maryland side of the Potomac River was underway by 1961.<ref name="NBI Little Falls Branch"/> The parkway was completed from its western end at MacArthur Boulevard to the interchange with Cabin John Parkway, which was not yet completed, in 1964.<ref name="1964 map"/> In 1965, the parkway opened from Cabin John east to the Glen Echo interchange. The Glen Echo interchange design was originally intended to be temporary, pending the construction of a signalized interchange just to the east, including an onramp overpass for west-bound traffic from McArthur Blvd. The concrete overpass bridge was completed but due to local objections, the new interchange was never completed.{{Citation needed|date=October 2021}} Extensions of the George Washington Memorial Parkway were proposed in both directions. From the west end, the parkway was to extend to the Chesapeake and Ohio Canal National Historical Park site at Great Falls. Going east, the parkway would continue to Georgetown, where it would tie into the western end of the [[Whitehurst Freeway]] at its junction with the [[Francis Scott Key Bridge (Washington, D.C.)|Francis Scott Key Bridge]].<ref name="1965 map"/> The unused bridge at the Glen Echo interchange was constructed and preliminary infrastructure work was done east of the interchange in anticipation of constructing a second carriageway east toward Georgetown. The plans to extend the parkway to Great Falls and Georgetown were abandoned by 1969.<ref name="Wash Post Mystery Bridge"/> The parkway was completed in its present form from the Glen Echo interchange to the Chain Bridge in 1973.<ref name="1973 map"/> Maryland's version of the George Washington Memorial Parkway was renamed for Clara Barton in 1989.<ref name="Wash Post Clara Barton Rename"/>
Congress approved the construction of parkways on both sides of the Potomac River from Great Falls to [[Fort Washington, Maryland|Fort Washington]] and [[Mount Vernon]] in Maryland and [[Virginia]], respectively, in 1930.<ref name="Wash Post Mystery Bridge"/> Construction on what was originally named the George Washington Memorial Parkway on the Maryland side of the Potomac River was underway by 1961.<ref name="NBI Little Falls Branch"/> The parkway was completed from its western end at MacArthur Boulevard to the interchange with Cabin John Parkway, which was not yet completed, in 1964.<ref name="1964 map"/> In 1965, the parkway opened from Cabin John east to the Glen Echo interchange. The Glen Echo interchange design was originally intended to be temporary, pending the construction of a signalized interchange just to the east, including an onramp overpass for west-bound traffic from McArthur Blvd. The concrete overpass bridge was completed but due to local objections, the new interchange was never completed.{{Citation needed|date=October 2021}} Extensions of the George Washington Memorial Parkway were proposed in both directions. From the west end, the parkway was to extend to the Chesapeake and Ohio Canal National Historical Park site at Great Falls. Going east, the parkway would continue to Georgetown, where it would tie into the western end of the [[Whitehurst Freeway]] at its junction with the [[Francis Scott Key Bridge (Washington, D.C.)|Francis Scott Key Bridge]].<ref name="1965 map"/> The unused bridge at the Glen Echo interchange was constructed and preliminary infrastructure work was done east of the interchange in anticipation of constructing a second carriageway east toward Georgetown. The plans to extend the parkway to Great Falls and Georgetown were abandoned by 1969.<ref name="Wash Post Mystery Bridge"/> The parkway was completed in its present form from the Glen Echo interchange to the Chain Bridge in 1970.<ref>{{cite web |last1=Davis |first1=Timothy |title=George Washington Memorial Parkway |url=http://npshistory.com/publications/highways/george_washington/george-washington-memorial-parkway.pdf |access-date=24 July 2023 |ref=Brochure}}</ref> Maryland's version of the George Washington Memorial Parkway was renamed for Clara Barton in 1989.<ref name="Wash Post Clara Barton Rename"/>


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==Exit list==
==Major intersections==
{{jcttop|state_col=state|unnum=yes|length_ref=<ref name="Google Maps Clara Barton Parkway"/>}}
{{jcttop|state_col=state|length_ref=<ref name="Google Maps Clara Barton Parkway"/>}}
{{MDint
{{MDint
|sspan=10
|sspan=12
|county=Montgomery
|county=Montgomery
|cspan=10
|cspan=12
|location=Potomac
|location=Potomac
|lspan=3
|lspan=4
|mile=0.0
|mile=0.0
|road=[[MacArthur Boulevard (Washington, D.C.)|MacArthur Boulevard]]&nbsp;– [[Great Falls (Potomac River)|Great Falls]], [[Cabin John, Maryland|Cabin John]]
|road={{jct|state=MD|road|[[MacArthur Boulevard (Washington, D.C.)|MacArthur Boulevard]]|location1=[[Great Falls (Potomac River)|Great Falls]]|city2=Cabin John}}
|notes=[[At-grade intersection]]
|notes=Western terminus
}}
}}
{{MDint
{{MDint
|mile=0.7
|mile=0.7
|mspan=2
|place=Western end of freeway section
}}
{{MDint
|mile=none
|road=[[Carderock Division of the Naval Surface Warfare Center]]
|road=[[Carderock Division of the Naval Surface Warfare Center]]
|notes=[[Diamond interchange]]
|notes=[[Diamond interchange]]
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|type=incomplete
|type=incomplete
|road={{jct|state=MD|I|495|location1=[[Maryland]]|location2=[[Virginia]]|location3=[[Dulles Airport]]|extra=airport}}
|road={{jct|state=MD|I|495|location1=[[Maryland]]|location2=[[Virginia]]|location3=[[Dulles Airport]]|extra=airport}}
|notes=Exit 41 on I-495 (Capital Beltway); westbound access to I-495 north is via [[Cabin John Parkway]]
|notes=Exit 41 on I-495 (Capital Beltway); no westbound access to I-495 north
}}
}}
{{MDint
{{MDint
Line 89: Line 93:
|mile=3.5
|mile=3.5
|type=incomplete
|type=incomplete
|road={{jct|state=MD|CJP||I|495|to2=yes|dir2=north|location1=[[Maryland]]}}
|road={{jct|state=MD|CJP||dir1=north|I|495|to2=yes|dir2=north|location1=[[Maryland]]}}
|notes=Westbound exit and eastbound entrance
|notes=Westbound exit and eastbound entrance
}}
}}
{{MDint
{{MDint
|location=Glen Echo
|location=Glen Echo
|lspan=2
|lspan=3
|mile=4.1
|mile=4.1
|type=incomplete
|type=incomplete
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{{MDint
{{MDint
|mile=4.2
|mile=4.2
|mspan=2
|type=incomplete
|type=incomplete
|road=[[MacArthur Boulevard (Washington, D.C.)|MacArthur Boulevard]]&nbsp;&ndash; [[Glen Echo, Maryland|Glen Echo]]
|road=[[MacArthur Boulevard (Washington, D.C.)|MacArthur Boulevard]]&nbsp;&ndash; [[Glen Echo, Maryland|Glen Echo]]
|notes=No eastbound entrance; western terminus of rush hour one-way segment
|notes=No eastbound entrance; western terminus of rush hour one-way segment}}
{{MDint
|mile=none
|place=Eastern end of freeway section
}}
}}
{{MDint
{{MDint
Line 118: Line 126:
|mile=6.8
|mile=6.8
|road=[[Chain Bridge (Potomac River)|Chain Bridge]]&nbsp;/ [[Canal Road (Washington, D.C.)|Canal Road NW]] east
|road=[[Chain Bridge (Potomac River)|Chain Bridge]]&nbsp;/ [[Canal Road (Washington, D.C.)|Canal Road NW]] east
|notes=At-grade intersection
|notes=Eastern terminus
}}
}}
{{jctbtm|col=7|keys=incomplete}}
{{jctbtm|col=7|keys=incomplete}}
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<ref name="1965 map">{{Maryland road map|year=1965}}</ref>
<ref name="1965 map">{{Maryland road map|year=1965}}</ref>

<ref name="1973 map">{{Maryland road map|year=1973}}</ref>


<ref name="Wash Post Clara Barton Rename">{{Cite news|title=Bush Signs Bill Naming Parkway For Clara Barton|newspaper=The Washington Post|date=November 29, 1989}}</ref>
<ref name="Wash Post Clara Barton Rename">{{Cite news|title=Bush Signs Bill Naming Parkway For Clara Barton|newspaper=The Washington Post|date=November 29, 1989}}</ref>
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==External links==
==External links==
{{commons category|Clara Barton Parkway}}
{{commons category}}
{{AttachedKML|display=title,inline}}
{{AttachedKML|display=title,inline}}
All of the following are filed under Montgomery County, Maryland:
All of the following are filed under Montgomery County, Maryland:
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{{Streets in Washington, DC}}
{{Streets in Washington, DC}}
{{Protected Areas of the District of Columbia}}

{{authority control}}
{{authority control}}


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[[Category:Historic American Engineering Record in Maryland]]
[[Category:Historic American Engineering Record in Maryland]]
[[Category:Clara Barton|Parkway]]
[[Category:Clara Barton|Parkway]]
[[Category:Limited-access roads in Maryland]]

Revision as of 22:38, 3 May 2024

Clara Barton Parkway

Route information
Maintained by National Park Service
Length6.8 mi[1] (10.9 km)
Existed1930[2]–present
Tourist
routes		 C&O Canal Scenic Byway
RestrictionsNo trucks; one-way traffic during rush hour
Major junctions
West endMacArthur Boulevard in Potomac, MD
Major intersections
East endChain Bridge / Canal Road in Washington, DC
Location
CountryUnited States
StatesMaryland, District of Columbia
CountiesMontgomery
Highway system

The Clara Barton Parkway is a parkway in the U.S. state of Maryland and the District of Columbia. The highway runs 6.8 miles (10.9 km) from MacArthur Boulevard in Carderock, Maryland, east to Canal Road at the Chain Bridge in Washington. The Clara Barton Parkway is a two- to four-lane parkway that parallels the Potomac River and the Chesapeake and Ohio Canal (C&O) in southwestern Montgomery County, Maryland, and the far western corner of Washington. The parkway provides access to the communities of Cabin John and Glen Echo and several units of the Chesapeake and Ohio Canal National Historical Park. The Maryland portion of the George Washington Memorial Parkway was constructed from Carderock past Interstate 495 (I-495) to Glen Echo in the early to mid-1960s. The parkway was proposed to continue west to Great Falls and east to Georgetown. However, these proposals never came to fruition and the parkway was extended only to the Chain Bridge in the early 1970s. The Maryland portion of the George Washington Memorial Parkway was renamed in 1989 for Clara Barton, the founder of the American Red Cross, and whose original headquarters is located in Glen Echo.

Route description

View northwest at the southeast end of the parkway

The Clara Barton Parkway begins at an intersection with MacArthur Boulevard in Carderock. MacArthur Boulevard heads west toward Great Falls and the affluent community of Potomac. The Clara Barton Parkway heads east as a two-lane surface road that becomes a four-lane freeway ahead of its diamond interchange with an access road to the Carderock Division of the Naval Surface Warfare Center to the north, which features the David Taylor Model Basin, and Carderock Recreation Area of the Chesapeake and Ohio (C&O) Canal to the south. East of the naval lab, the two roadways split for the parkway's six-ramp interchange with I-495 (Capital Beltway). There is no direct access from the Clara Barton Parkway westbound to I-495 north or from I-495 south to the parkway eastbound. The parkway roadways come together in Cabin John just west of parking areas accessible from the eastbound direction to C&O Canal Lock 10 and C&O Canal Lock 8 and River Center. Access to Cabin John is provided by a diamond interchange to a road connecting the parkway with MacArthur Boulevard in that community.[1]

The Clara Barton Parkway reduces to one lane eastbound as it crosses Cabin John Creek and meets the Cabin John Parkway at a partial interchange featuring ramps from the Clara Barton Parkway westbound to the Cabin John Parkway and from the Cabin John Parkway to the Clara Barton Parkway eastbound, which becomes two lanes again. At this point, the parkway passes in front of the historic Union Arch Bridge which spans the creek and carries the Washington Aqueduct and MacArthur Boulevard. The parkway continues east to its final interchange, which provides access to MacArthur Boulevard in Glen Echo, the location of Glen Echo Park and Clara Barton National Historic Site. The interchange features a U-turn ramp from the eastbound direction to the westbound lanes of the parkway, a tight right-turn ramp from the access road to westbound Clara Barton Parkway, and an unused bridge over the westbound direction. There is no access from MacArthur Boulevard to the eastbound parkway.[1]

View of Union Arch Bridge from Clara Barton Parkway as it passes over Cabin John Creek.

East of Glen Echo, the Clara Barton Parkway reverts to a two-lane surface road that closely parallels MacArthur Boulevard on the hillside to the north. The parkway passes a pair of parking areas for Little Falls before passing a third parking area for C&O Canal Lock 6. This segment of the parkway includes two pedestrian overpasses providing access from MacArthur Boulevard and Ridge Drive respectively, and aligned with pedestrian crossing over the C&O Canal below, offering access to the canal’s towpath. The first pedestrian overpass is approximately half-way between Lock 6 and 7 (also aligning with Sycamore Island) and the second at Lock 5. The Clara Barton Parkway crosses Little Falls Branch and enters the District of Columbia before reaching its eastern terminus at an intersection with Canal Road and Chain Bridge Road. Canal Road heads east toward Georgetown while Chain Bridge Road crosses the Chain Bridge into Arlington, Virginia to connect with Virginia State Routes 120 and 123.[1] Adjacent to the parkway’s terminus is access to the Capital Crescent Trail.

Commercial vehicles, including trucks, are prohibited from the Clara Barton Parkway without a permit from the National Park Service, which maintains the highway. Speed limits on the parkway are 30 miles per hour (48 km/h) from the western terminus to the Carderock interchange, 50 miles per hour (80 km/h) from the Carderock interchange to the Glen Echo interchange, and 35 miles per hour (56 km/h) from the Glen Echo interchange to the Chain Bridge. The Clara Barton Parkway operates as a one-way road between the Glen Echo interchange and its eastern terminus at the Chain Bridge Monday to Friday. Traffic flows eastbound only toward Washington from 6:15 a.m. to 10 a.m. and westbound only toward Glen Echo from 2:45 p.m. to 7:15 p.m.[3] The Clara Barton Parkway is a part of the National Highway System as a principal arterial for its entire length.[4]

History

Clara Barton Parkway looking west from the Carderock interchange

Congress approved the construction of parkways on both sides of the Potomac River from Great Falls to Fort Washington and Mount Vernon in Maryland and Virginia, respectively, in 1930.[2] Construction on what was originally named the George Washington Memorial Parkway on the Maryland side of the Potomac River was underway by 1961.[5] The parkway was completed from its western end at MacArthur Boulevard to the interchange with Cabin John Parkway, which was not yet completed, in 1964.[6] In 1965, the parkway opened from Cabin John east to the Glen Echo interchange. The Glen Echo interchange design was originally intended to be temporary, pending the construction of a signalized interchange just to the east, including an onramp overpass for west-bound traffic from McArthur Blvd. The concrete overpass bridge was completed but due to local objections, the new interchange was never completed.[citation needed] Extensions of the George Washington Memorial Parkway were proposed in both directions. From the west end, the parkway was to extend to the Chesapeake and Ohio Canal National Historical Park site at Great Falls. Going east, the parkway would continue to Georgetown, where it would tie into the western end of the Whitehurst Freeway at its junction with the Francis Scott Key Bridge.[7] The unused bridge at the Glen Echo interchange was constructed and preliminary infrastructure work was done east of the interchange in anticipation of constructing a second carriageway east toward Georgetown. The plans to extend the parkway to Great Falls and Georgetown were abandoned by 1969.[2] The parkway was completed in its present form from the Glen Echo interchange to the Chain Bridge in 1970.[8] Maryland's version of the George Washington Memorial Parkway was renamed for Clara Barton in 1989.[9]

Major intersections

StateCountyLocationmi[1]kmDestinationsNotes
MarylandMontgomeryPotomac0.00.0MacArthur Boulevard – Great Falls, Cabin JohnWestern terminus
0.71.1Western end of freeway section
Carderock Division of the Naval Surface Warfare CenterDiamond interchange
1.62.6 I-495 – Maryland, Virginia, Dulles AirportExit 41 on I-495 (Capital Beltway); no westbound access to I-495 north
Cabin John2.23.5C&O Canal Lock 10Eastbound access only
2.74.3C&O Canal Lock 8 / River CenterEastbound access only
3.15.0Cabin JohnInterchange with Clara Barton Access Road to MacArthur Boulevard
3.55.6

 Cabin John Parkway north to I-495 north – Maryland		Westbound exit and eastbound entrance
Glen Echo4.16.6C&O Canal Lock 7Eastbound access only
4.26.8MacArthur Boulevard – Glen EchoNo eastbound entrance; western terminus of rush hour one-way segment
Eastern end of freeway section
Brookmont5.79.2C&O Canal Lock 6Eastbound access only
District of ColumbiaWashington6.810.9Chain Bridge / Canal Road NW eastEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References

  1. ^ a b c d e Google (November 15, 2010). "Clara Barton Parkway" (Map). Google Maps. Google. Retrieved November 15, 2010.
  2. ^ a b c Kelly, John (September 10, 2011). "A Mystery Bridge on Clara Barton Parkway". The Washington Post. Archived from the original on September 10, 2013. Retrieved September 9, 2013.
  3. ^ "George Washington Memorial Parkway" (PDF). Title 36 – Code of Federal Regulations (CFR) Compendium. National Park Service. March 31, 2011. Retrieved September 9, 2013.
  4. ^ Federal Highway Administration (October 1, 2012). National Highway System: Washington, DC-VA-MD (PDF) (Map). Washington, DC: Federal Highway Administration. Retrieved May 16, 2015.
  5. ^ Federal Highway Administration (2012). "NBI Structure Number: 3300037P0000000". National Bridge Inventory. Federal Highway Administration.
  6. ^ Maryland State Roads Commission (1964). Maryland: Official Highway Map (PDF) (Map). Baltimore: Maryland State Roads Commission.
  7. ^ Maryland State Roads Commission (1965). Maryland: Official Highway Map (PDF) (Map). Baltimore: Maryland State Roads Commission.
  8. ^ Davis, Timothy. "George Washington Memorial Parkway" (PDF). Retrieved July 24, 2023.
  9. ^ "Bush Signs Bill Naming Parkway For Clara Barton". The Washington Post. November 29, 1989.

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