Streets and highways of Washington, D.C.

The streets and highways of Washington, D.C. are based on a plan that provides for vehicular transportation in the capital and a distinctive city layout and addressing scheme.

City layout

Washington, D.C., was created to serve as the national capital. The original street layout was designed by Pierre (Peter) Charles L'Enfant in 1791. L'Enfant incorporated a basic grid system, inter-cut with broad diagonal radiating avenues to provide vistas. In 1792, surveyor Andrew Ellicott revised L'Enfant's plan, creating the design that the federal city's development followed. [ [http://www.nps.gov/history/nr/travel/wash/lenfant.htm The L'Enfant and McMillan Plans] "in" [http://www.nps.gov/history/nr/travel/wash/"Washington, D.C., A National Register of Historic Places Travel Inventory"] "in" [http://www.nps.gov offical website of the U.S. National Park Service] Accessed August 14, 2008.] [The U.S. National Archives holds a copy of "Ellicott's engraved Plan superimposed on the Plan of L'Enfant showing the changes made in the engraved Plan under the direction of President Washington". See "Scope & Contents" page of "Archival Description" for National Archives holding of "Miscellaneous Oversize Prints, Drawings and Posters of Projects Associated with the Commission of Fine Arts, compiled 1893 - 1950", ARC Identifier 518229/Local Identifier 66-M; Series from Record Group 66: Records of the Commission of Fine Arts, 1893 - 1981. Record of holding obtained through search in [http://arcweb.archives.gov/arc Archival Descriptions Search of ARC - Archival Research Catalog] using search term "L'Enfant Plan Ellicott", August 22, 2008.] At the center of the design is the United States Capitol, from which four quadrants radiate along the four compass directions: Northwest, Southwest, Northeast, and Southeast. The quadrants are separated by North Capitol Street, South Capitol Street, and East Capitol Street, with a line traveling due west from the Capitol through the Jefferson Pier on the National Mall serving as the fourth demarcation line. Two avenues, Constitution Avenue and Independence Avenue, line the sides of the Mall. The boundary of the District with Maryland – which originally formed part of a square whose center was located within the present grounds of the Organization of American States headquarters west of the Ellipse [ Coordinates of the center of the original District of Columbia ] (In a nod to this, the food court at The George Washington University is named J Street.) There is a legend that J Street was omitted as a deliberate slight to John Jay, but this is not true. [http://www.snopes.com/history/american/jstreet.htm] North of the Mall, the road that was once B Street NE and NW is now named Constitution Avenue; south of the Mall, the corresponding street is named Independence Avenue. There are also no X, Y, or Z streets. I Street, Q Street, and U Street are alternately called "Eye Street", "Que (or Cue) Street", and "You Street", respectively, to avoid confusion with other lettered streets. Because street names repeat in each quadrant, each street name is appended by the quadrant in which it is located (NE, NW, SE, and SW). Use of these directional designations is required in giving directions and in the addressing of mail. Once single letters are exhausted as east-west street names, the "alphabet" system continues anew with two-syllable names beginning with the first letter of the alphabet; streets in this set are commonly referred to as being in the "second alphabet" (for example, Calvert St. NW would be the third street of this second alphabet). As in the previous series of names, the names beginning with X, Y, or Z are not used. In Northwest and Northeast Washington, which are the largest quadrants, a "third alphabet" is started using three-syllable words, e.g., Brandywine St. NW. Only in the Northwest quadrant is a "fourth alphabet" necessary. It uses botanical names without regard to the number of syllables: Aspen, Butternut, Cedar, etc. Verbena Street NW is the last in this series before the Maryland border.
Diagonal avenues, generally named for states, are exempt from this syllabic rule, as are streets designated as "Place" or "Way" and streets laid out after the alpha-name was established for that area; for example, Duddington Place is located between E and F Streets in Southeast. The original city plan for Washington included only the original city of Washington, i.e., the area between the waterfront and what is today Florida Avenue. It has since been extended throughout the District. Georgetown, which was founded before the District of Columbia, had its own street naming system until 1895, when the streets were renamed to conform to the street names in use in Washington. The city's addressing system is best understood in terms of a Cartesian coordinate system with its origin at the Capitol. While the system may appear complex, once learned it allows one to pinpoint not only where one is but also where and how far one may need to travel. For example, if one needed to find 633 A Street SE, the address informs that the address is southeast of the Capitol, with A Street one block south of East Capitol Street, and that the location on that street is on the 600 block, which is between 6th Street and 7th Street SE.

Another example is the White House, located at 1600 Pennsylvania Avenue NW, is located at 16th Street NW (Lafayette Square) and Pennsylvania Avenue NW. This works both ways; an address at 514 19th St NW would be on 19th St west of the Capitol, and since E is the fifth letter of the alphabet, the 514 address would be between E and F Streets NW. Because "J" is omitted from the scheme, it is not counted in numbering. Thus between I and K Streets is the 900 block of a numbered street, while the block from K to L is numbered in the 1000s.

Major roads

Interstate highways

Interstate 495, also known as the "Capital Beltway", creates an artificial boundary for the inner suburbs of Washington and is the root of the phrase "inside the Beltway". Almost completely circling Washington, D.C., it crosses a tiny portion of the District at its southernmost point at the Woodrow Wilson Bridge. I-66 runs from the eastern edge of Georgetown, connects with the Beltway, and continues through northern Virginia to I-81. I-295 comes up from the south starting at the eastern edge of the Woodrow Wilson Bridge on the Beltway and crosses the Anacostia River into downtown, linking up with I-395 (also called the Southwest-Southeast Freeway), a major commuter route extending from New York Avenue to the Beltway and Interstate 95 in Springfield, Virginia. The Inner Loop was a proposed network of freeways in the city center; however, only portions of it were ever built.

A convergence indexing based road traffic monitoring system was installed on Washington's highways in 2008.Fact|date=August 2008

Other expressways and parkways

The Anacostia Freeway (DC-295) splits from I-295 on the south side of the Anacostia and links with the Baltimore-Washington Parkway, which eventually becomes Maryland State Highway 295, via a short section of Maryland State Highway 201. The Suitland Parkway connects the city with the southeastern suburbs in Prince George's County, Maryland. The Whitehurst Freeway, an elevated freeway over K Street in Georgetown, allows U.S. Highway 29 traffic to bypass congested Georgetown between the Key Bridge and K Street downtown. The E Street Expressway connects I-66 with the city's Foggy Bottom area and the areas immediately to the west of the White House. The Rock Creek and Potomac Parkway provides access to downtown from the northern and western ends of the city.

City streets

Among the major roads in the city are MacArthur Boulevard NW, 14th Street NW, 16th Street NW, 18th Street NW, 7th Street NW, Connecticut Avenue NW, K Street NW, H Street NW, Wisconsin Avenue, M Street NW, H Street NE, Pennsylvania Avenue, Constitution Avenue, Independence Avenue, Massachusetts Avenue, U Street NW, South Dakota Ave NE, North Capitol Street, South Capitol Street, East Capitol Street, Georgia Avenue, Minnesota Avenue, Nannie Helen Burroughs Avenue, Benning Road, Martin Luther King Jr. Avenue SE, New York Avenue, and Rhode Island Avenue.

While city streets generally do not have route numbers, U.S. Routes 1, 1 Alternate, 29, and 50 are routed predominantly or entirely over city surface streets.

ee also

*History of Washington, D.C.
*List of Circles in Washington, D.C.
*List of Washington, D.C. numbered highways
*List of state-named roadways in Washington, D.C.

References