Cabin John Parkway
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The Cabin John Parkway is a parkway in Montgomery County, Maryland, U.S.A., near Cabin John, Maryland. At its northern/western terminus, it connects to the Capital Beltway and to River Road (Maryland State Highway 190). At its southern/eastern terminus, it connects to the Clara Barton Parkway. It is not signed with a route number, although State Highway Administration documents refer to it as Interstate 495X.