page_title: Arlington County, Virginia
section_title: Streets and roads
hierarchical_section_title: Arlington County, Virginia / Transportation / Streets and roads
caption_attribution_description: English: Washington Metro, Pentagon City station.
context_page_description: Arlington County is a county in the Commonwealth of Virginia, often referred to simply as Arlington or Arlington, Virginia. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from the District of Columbia, of which it was once a part. The county is coterminous with the U.S. Census Bureau's census-designated place of Arlington. Arlington is considered to be the second-largest "principal city" of the Washington metropolitan area.
  In 2019, the county's population was estimated at 236,842, making Arlington the sixth-largest county in Virginia by population; if it were incorporated as a city, Arlington would be the fourth most-populous city in the state. With a land area of 26 square miles, Arlington is the geographically smallest self-governing county in the U.S., and by reason of state law regarding population density, it has no incorporated towns within its borders. It is the 5th highest-income county in the U.S. by median family income.
  Arlington is home to the Pentagon, Reagan National Airport, and Arlington National Cemetery.
context_section_description: Arlington forms part of the region's core transportation network. The county is traversed by two interstate highways, Interstate 66 in the northern part of the county and Interstate 395 in the eastern part, both with high-occupancy vehicle lanes or restrictions. In addition, the county is served by the George Washington Memorial Parkway. In total, Arlington County maintains 376 miles (605 km) of roads.
  The street names in Arlington generally follow a unified countywide convention. The north-south streets are generally alphabetical, starting with one-syllable names, then two-, three- and four-syllable names. The "lowest" alphabetical street is Ball Street. The "highest" is Arizona. Many east-west streets are numbered. Route 50 divides Arlington County.  Streets are generally labeled North above Route 50, and South below.
  Arlington has more than 100 miles (160 km) of on-street and paved off-road bicycle trails. Off-road trails travel along the Potomac River or its tributaries, abandoned railroad beds, or major highways, including: Four Mile Run Trail that travels the length of the county; the Custis Trail, which runs the width of the county from Rosslyn; the Washington & Old Dominion Railroad Trail (W&OD Trail) that travels 45 miles (72 km) from the Shirlington neighborhood out to western Loudoun County; the Mount Vernon Trail that runs for 17 miles (27 km) along the Potomac, continuing through Alexandria to Mount Vernon. In Fall 2015, Arlington was awarded a Silver ranking by the League of American Bicyclists for its bike infrastructure.
caption: Arlington is home to the first suburban Washington Metro stations
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