The District of Columbia is served by the unnumbered federally-maintained Clara Barton Parkway, Rock Creek and Potomac Parkway

Rock Creek and Potomac Parkway

The Rock Creek and Potomac Parkway, often known simply as the Rock Creek Parkway, is a parkway maintained by the National Park Service as part of Rock Creek Park in Washington, D.C...

 and George Washington Memorial Parkway

George Washington Memorial Parkway

The George Washington Memorial Parkway, known to local motorists simply as the "G.W. Parkway", is a parkway maintained by the U.S. National Park Service. It is located mostly in Northern Virginia, although a short section northwest of the Arlington Memorial Bridge passes over Columbia Island,...

 (the latter on the west side of the Potomac River

Potomac River

The Potomac River flows into the Chesapeake Bay, located along the mid-Atlantic coast of the United States. The river is approximately long, with a drainage area of about 14,700 square miles...

, but a portion of it is east of the Boundary Channel

Boundary Channel

Boundary Channel is a channel off the Potomac River in Washington, D.C. The channel extends southward from the Potomac between Columbia Island to the east and the Virginia shore to the west and ends at the Pentagon Lagoon. Boundary Channel is shallow and is crossed by several fixed...

), along with several interstates and U.S. routes. Maintenance of roads in the District is the responsibility of the District Department of Transportation (DDOT).

Current

Note: Interstate 95

Interstate 95

Interstate 95 is the main highway on the East Coast of the United States, running parallel to the Atlantic Ocean from Maine to Florida and serving some of the most populated urban areas in the country, including Boston, Providence, New Haven, New York City, Newark, Philadelphia, Baltimore,...

 and Interstate 495 pass within the boundaries of the District of Columbia in the middle of the Potomac River at the Woodrow Wilson Bridge

Woodrow Wilson Bridge

The Woodrow Wilson Memorial Bridge is a bascule bridge that spans the Potomac River between the independent city of Alexandria, Virginia and Oxon Hill in Prince George's County, Maryland, United States. While over the water near the Virginia shore, it crosses the southern tip of the District of...

, but do not connect to any other roads in D.C.

	Interstate 66 Interstate 66 Interstate 66 is an Interstate Highway in the eastern United States. As indicated by its even route number, it runs in an east–west direction. Its western terminus is at Middletown, Virginia, at an intersection with Interstate 81; its eastern terminus is in Washington, D.C., at an...
	Interstate 295
	Interstate 395
	Interstate 695	An unsigned interstate.
	U.S. Route 1 U.S. Route 1 in the District of Columbia With the District of Columbia, U.S. Route 1 passes between Arlington, Virginia and Mount Rainier, Maryland predominantly along surface streets. However, it forms a few overlaps with other routes.-Northbound:...	From 14th Street Bridge in Virginia Virginia The Commonwealth of Virginia , is a U.S. state on the Atlantic Coast of the Southern United States. Virginia is nicknamed the "Old Dominion" and sometimes the "Mother of Presidents" after the eight U.S. presidents born there...  to Constitution Ave to 6th Street NW to Rhode Island Avenue to the Maryland Maryland Maryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...  state line where it becomes Baltimore Ave/Baltimore Blvd in Prince George's County Prince George's County, Maryland Prince George's County is a county located in the U.S. state of Maryland, immediately north, east, and south of Washington, DC. As of 2010, it has a population of 863,420 and is the wealthiest African-American majority county in the nation.... .
	U.S. Route 1 Alternate
	U.S. Route 29 U.S. Route 29 in the District of Columbia U.S. Route 29 passes through the District of Columbia between Arlington, Virginia, and Silver Spring, Maryland, predominantly along surface streets.-Route description:...	Georgia Avenue
	U.S. Route 50 U.S. Route 50 in the District of Columbia U.S. Route 50 is a major east–west route of the U.S. Highway system, stretching just over from Ocean City, Maryland, on the Atlantic Ocean, to West Sacramento, California, nearly to the Pacific Ocean...	Constitution Ave. to 6th St NW to New York Avenue New York Avenue (Washington, D.C.) New York Avenue is one of the diagonal avenues radiating from the White House in Washington, D.C. It is a major east-west route in the city's Northwest and Northeast quadrants and connects downtown with points east and north of the city via Cheverly, Maryland, the John Hanson Highway and the...  where it continues to the Maryland Maryland Maryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...  state line.
	District of Columbia Route 295 District of Columbia Route 295 District of Columbia Route 295 , also known as the Anacostia Freeway south of East Capitol Street or Kenilworth Avenue north of East Capitol Street, is a freeway in the District of Columbia, and currently the only numbered route in the District that is not an Interstate Highway or U.S. Highway...	Interstate 295 to the Maryland Maryland Maryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...  state Line at the Baltimore-Washington Parkway Baltimore-Washington Parkway The Baltimore–Washington Parkway is a highway in the U.S. state of Maryland, running southwest from Baltimore to Washington, D.C. The road begins at an interchange with U.S. Route 50 and Maryland Route 201 near Cheverly in Prince George's County at the D.C... .

Decommissioned

	Interstate 95
	Interstate 270 Interstate 270 (Maryland) Interstate 270 is a auxiliary Interstate Highway in the U.S. state of Maryland that travels between Interstate 495 just north of Bethesda, Montgomery County and Interstate 70 in the city of Frederick in Frederick County. It consists of the mainline as well as a spur that provides access to and...
	U.S. Route 1 Bypass
	U.S. Route 50 Alternate
	U.S. Route 50 Bypass
	U.S. Route 211 U.S. Route 211 U.S. Route 211 is a spur of US 11 in the U.S. state of Virginia. Known for most of its length as Lee Highway, the U.S. Highway runs from Interstate 81 and Virginia State Route 211 in New Market east to US 15 Business, US 29 Business, and US 211 Business in Warrenton...
	U.S. Route 240 U.S. Route 240 U.S. Route 240 is a defunct designation for a short, but once very important, segment of highway between Frederick, Maryland and Washington, D.C.-Route description:...
	U.S. Route 240 Alternate

D.C. Routes

Note: many of these routes may have been unsigned, but are shown on some maps.

District of Columbia Route 4
District of Columbia Route 5
District of Columbia Route 193
District of Columbia Route 210
District of Columbia Route 332
District of Columbia Route 355
District of Columbia Route 396
District of Columbia Route 500
District of Columbia Route 650

See also

• List of state highways in the United States
• Streets and highways of Washington, D.C.
  Streets and highways of Washington, D.C.
  The streets and highways of Washington, D.C. form the core of the city's surface transportation infrastructure. As a planned city, streets in the capital of the United States follow a distinctive layout and addressing scheme...
  
  

External links

• District Department of Transportation
• 1946 D.C. map on U.S. Highways: Shows the former D.C. routes.
• Road Signs of Washington, D.C.
• Washington, D.C. Highways at AARoads