Cabin John Parkway is an automobile
parkway
A parkway is a landscaped thoroughfare.''"parkway."''Webster's Third New International Dictionary, Unabridged. Merriam-Webster, 2002. http://unabridged.merriam-webster.com (14 Apr. 2007). The term is particularly used for a roadway in a park or ...
in the U.S. state of
Maryland
Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to ...
. The parkway runs from
Clara Barton Parkway
Clara Barton Parkway is an automobile parkway in the U.S. state of Maryland and the District of Columbia. The highway runs from MacArthur Boulevard in Carderock, Maryland, east to Canal Road at the Chain Bridge in Washington. Clara Barton Park ...
in
Cabin John north to
Interstate 495 (I-495) in
Bethesda in southwestern
Montgomery County. Cabin John Parkway is a four-lane freeway that serves as a connector between Clara Barton Parkway in the direction of
Washington
Washington commonly refers to:
* Washington (state), United States
* Washington, D.C., the capital of the United States
** A metonym for the federal government of the United States
** Washington metropolitan area, the metropolitan area centered o ...
and I-495 in the direction of
Rockville and
Silver Spring. The parkway was constructed in the mid-1960s and passes under the historic
Union Arch Bridge
The Union Arch Bridge, also called the "Cabin John Bridge", is a historic masonry structure in Cabin John, Maryland. It was designed as part of the Washington Aqueduct. The bridge construction began in 1857 and was completed in 1864. The roadw ...
, the longest masonry arch span in America.
Route description
Cabin John Parkway begins at a partial interchange with Clara Barton Parkway in the
unincorporated area
An unincorporated area is a region that is not governed by a local municipal corporation. Widespread unincorporated communities and areas are a distinguishing feature of the United States and Canada. Most other countries of the world either have ...
of Cabin John. The interchange allows access from southbound Cabin John Parkway to eastbound Clara Barton Parkway and from westbound Clara Barton Parkway to northbound Cabin John Parkway. Each direction of the parkway crosses
Cabin John Creek
Cabin John Creek is a tributary stream of the Potomac River in Montgomery County, Maryland. The watershed covers an area of . The headwaters of the creek originate in the city of Rockville, and the creek flows southward for U.S. Geological Surv ...
before the roadways come together to pass under the Union Arch Bridge, which carries the
Washington Aqueduct
The Washington Aqueduct is an aqueduct that provides the public water supply system serving Washington, D.C., and parts of its suburbs, using water from the Potomac River. One of the first major aqueduct projects in the United States, the Aqueduc ...
and
MacArthur Boulevard MacArthur Boulevard may refer to:
*MacArthur Boulevard (Washington, D.C.), a road that parallels the C&O Canal in Washington, D.C. and Montgomery County, Maryland
*MacArthur Boulevard in Oakland, California, a major boulevard in Oakland and a histo ...
. Cabin John Parkway crosses Cabin John Creek again before continuing north as a four-lane freeway with a speed limit of through a forested corridor paralleling the creek. After crossing Booze Creek, the two directions of the parkway divide toward their termini at I-495 (Capital Beltway) in Bethesda. The northbound direction of the Cabin John Parkway splits into single-lane ramps for northbound I-495 and I-495's interchange with
MD 190 (River Road). The southbound parkway is formed by ramps from southbound I-495 and MD 190.
Cabin John Parkway is maintained by the
Maryland State Highway Administration
The Maryland State Highway Administration (abbreviated MDOT SHA or simply SHA) is the state transportation business unit responsible for maintaining Maryland's numbered highways outside Baltimore City. Formed originally under authority of the Ge ...
and has an internal designation of I-495X. Trucks are prohibited on the parkway.
Cabin John Parkway is a part of the
National Highway System as a principal arterial for its entire length.
History
Construction on Cabin John Parkway began in 1962 when I-495's bridge across Cabin John Creek and the southbound ramp to the parkway was built.
Work on the remainder of the parkway was underway by 1963.
Cabin John Parkway opened in 1965 when the Clara Barton Parkway (then known as the Maryland portion of the George Washington Parkway) from the Cabin John interchange east to the MacArthur Boulevard interchange opened.
Exit list
See also
*
References
External links
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Bethesda, Maryland
Cabin John, Maryland
Interstate 495X (Cabin John Parkway)
Cabin John Parkway
Cabin John Parkway is an automobile parkway in the U.S. state of Maryland. The parkway runs from Clara Barton Parkway in Cabin John north to Interstate 495 (I-495) in Bethesda in southwestern Montgomery County. Cabin John Parkway is a four-la ...