page_title: Transportation in Washington, D.C.
section_title: Streets and highways
hierarchical_section_title: Transportation in Washington, D.C. / Streets and highways
caption_attribution_description: English: View west along Interstate 66 (Potomac River Freeway) from the overpass for Triangle Park/Virginia Avenue/New Hampshire Avenue/25th Street in Washington, D.C.
context_page_description: Washington, D.C. has a number of different modes of transportation available for use. Commuters have a major influence on travel patterns, with only 28% of people employed in Washington, D.C. commuting from within the city, whereas 33.5% commute from the nearby Maryland suburbs, 22.7% from Northern Virginia, and the rest from Washington, D.C.'s outlying suburbs.
context_section_description: City streets in the District of Columbia are organized primarily in a grid-like fashion with its origin at the United States Capitol, with diagonal streets running across this grid, as well as circles—a plan laid out by Pierre L'Enfant and revised by Andrew Ellicott and Joseph Ellicott. The north–south roads are primarily named with numbers (i.e. 1st Street, 2nd Street, etc.), while the east–west roads are primarily named with letters (beginning with A Street) or, once letters are exhausted, are named alphabetically (Adams, Bryant, Channing, etc.) Intersecting this network of streets are diagonal avenues named after each of the fifty states. Within this grid, all streets are a part of one of the four quadrants of the city — Northeast (NE), Northwest (NW), Southeast (SE), and Southwest (SW) — all centered on the Capitol Building. All roads end with this suffix at the end of their title. For example, there is a 4th Street NE, 4th Street NW, 4th Street SE, and 4th Street SW.
  Exceptions to this nomenclature include the names of the streets that line the National Mall. The north side of the mall is lined by Constitution Avenue, whereas the south side of the mall is lined by Independence Avenue. Both streets follow the NE, NW, SE, SW rule.
  Major interstates running through the area include the Capital Beltway (I-495), I-66, I-95, I-395 (also called the Southwest/Southeast Freeway in D.C. or Shirley Highway in Virginia), I-295 (also called the Anacostia Freeway or Kenilworth Avenue), and I-270 (which does not reach D.C., terminating at I-495). Other major highways include the Whitehurst Freeway, in D.C., the George Washington Parkway in Virginia, the Rock Creek Parkway in D.C., the Suitland Parkway in D.C. and Maryland, US Route 50, the Clara Barton Parkway and the Baltimore-Washington Parkway in Maryland, and the Dulles Toll Road in Virginia. Portions of I-66 and I-95/I-395 in Virginia are HOV roads (only vehicles carrying multi-occupants or using hybrid energy are allowed on during weekday rush hours).
caption: I-66 in Washington, D.C.
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