Cabin_John_Parkway

Cabin John Parkway

Cabin John Parkway

County highway in Montgomery County, Maryland, US

Cabin John Parkway is an controlled-access parkway in the U.S. state of Maryland. The parkway runs 1.50 miles (2.41 km) 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-lane freeway that serves as a connector between Clara Barton Parkway in the direction of Washington, D.C. 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 longest masonry arch span in America.

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Route description

View north along the Cabin John Parkway from the Union Arch Bridge

Cabin John Parkway begins at a partial interchange with Clara Barton Parkway in the unincorporated area 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 before the roadways come together to pass under the Union Arch Bridge, which carries the Washington Aqueduct and MacArthur Boulevard. Cabin John Parkway crosses Cabin John Creek again before continuing north as a four-lane freeway with a speed limit of 55 mph (89 km/h) through a forested corridor paralleling the creek. After crossing Booze Creek, the two directions of the parkway divide toward their terminuses 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 Maryland Route 190 (MD 190; River Road). The southbound parkway is formed by ramps from southbound I-495 and MD 190.[1][2]

Cabin John Parkway is maintained by the Maryland State Highway Administration and has an internal designation of Interstate 495X (I-495X). Trucks are prohibited on the parkway.[1] Cabin John Parkway is a part of the National Highway System as a principal arterial for its entire length.[1][3]

History

View north along Cabin John Parkway near the Clara Barton Parkway

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.[4] Work on the remainder of the parkway was underway by 1963.[5] 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.[6]

Exit list

The entire parkway is in Montgomery County. All exits are unnumbered.

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See also

References

  1. [1]
    Highway Information Services Division (December 31, 2013). Highway Location Reference. Maryland State Highway Administration. Retrieved September 8, 2013.
  2. [2]
    National Highway System: Washington, DC-VA-MD (PDF) (Map). Federal Highway Administration. October 1, 2012. Retrieved May 16, 2015.
  3. [3]
    Google (May 19, 2010). "Cabin John Parkway" (Map). Google Maps. Google. Retrieved May 19, 2010.
  4. [4]
    Federal Highway Administration (2012). "NBI Structure Number: 100000150108010". National Bridge Inventory. Federal Highway Administration.
  5. [5]
    Maryland State Roads Commission (1963). Maryland: Official Highway Map (PDF) (Map). Baltimore: Maryland State Roads Commission.
  6. [6]
    Maryland State Roads Commission (1965). Maryland: Official Highway Map (PDF) (Map). Baltimore: Maryland State Roads Commission.
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