| District of Columbia Routes | |
|---|---|
  Standard markers for highways in the District of Columbia | |
| Highway names | |
| Interstates | Interstate X (I-X) |
| US Highways | U.S. Route X (US X) |
| State | District of Columbia Route X (DC X) |
| System links | |
District of Columbia Routes arenumbered highways maintained by the District of Columbia'sDistrict Department of Transportation (DDOT). In addition to these routes, there are severalInterstate andUnited States Numbered highways that pass throughWashington, D.C. The metro area is also served by three unnumbered, federally maintained parkways: theClara Barton Parkway, theRock Creek and Potomac Parkway, and theGeorge Washington Memorial Parkway (the latter on the west side of thePotomac River, but a portion of it is east of theBoundary Channel).
The chart below consists of all District of Columbia Routes, including signed routes that no longer traverse the District of Columbia.
| Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
|---|---|---|---|---|---|---|---|---|
 DC 4 | — | — | — | — | — | — | Pennsylvania Avenue was designated DC 4, an extension of Maryland Route 4 that reached at least the east side of theWhite House.[citation needed] | |
 DC 5 | — | — | — | — | 01939-01-011939 | 01949-01-011949 | Continued into Washington, D.C. on Naylor Road, Good Hope Road, and 11th Street toDistrict of Columbia Route 4 (Pennsylvania Avenue).[1] MD 5 was directed to follow Branch Avenue to the D.C. border and DC 5 was modified to follow Branch Avenue from the Maryland border to DC 4 (Pennsylvania Avenue), which itfollowed west to theWhite House, by 1946.[2][3] | |
 DC 295 | 4.29 | 6.90 | Anacostia Freeway (DC 295) /11th Street Bridges (I-695) inAnacostia | Kenilworth Avenue Freeway (MD 201) nearCapitol Heights, MD | 01964-01-011964 | current | Anacostia Freeway (north of the 11th Street Bridges), Kenilworth Avenue Freeway | |
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