Orange Line (Washington Metro)
| Company type | Rapid transit line |
|---|---|
| Industry | Public transportation |
| Founded | November 20, 1978 |
| Headquarters | Washington, D.C. , United States |
Area served | Washington metropolitan area (Fairfax County, Arlington County, Washington, D.C., Prince George's County) |
| Products | Rapid transit service |
| Website | www |
The Orange Line is one of the six rapid transit routes within the Washington Metro network, encompassing 26 stations that span across Fairfax County, Virginia, Arlington County, Virginia, Washington, D.C., and Prince George's County, Maryland. Its route extends from Vienna in Fairfax County to New Carrollton in Maryland. Approximately half of its stations coincide with those on the Blue Line, while all except three stations—Vienna, Dunn Loring, and West Falls Church—are also shared with the Silver Line. The Orange Line commenced operations on November 20, 1978.
Train frequencies are scheduled every 10 minutes during weekday peak periods, every 12 minutes during off-peak hours and weekends, and every 15 minutes after 9:30 pm.
20th century
Initial planning for the Metro system began in 1955 with the Mass Transportation Survey projecting transit demands through 1980. By 1959, proposals included two rapid transit lines serving downtown Washington. Local resistance to freeway development in D.C. led to a moratorium on such projects until 1962. The National Capital Transportation Agency's report from that year envisioned much of what is now the Orange Line running along the median of Interstate 66 in Virginia.
Following the establishment of WMATA in 1966, planning responsibilities transitioned to a regional authority representing D.C., Maryland, and Virginia. Approval of routes depended heavily on suburban jurisdictions endorsing bond referendums. To reduce expenses, the Orange Line was primarily aligned along preexisting railroad corridors, with planned extensions toward Bowie, Maryland, and Dulles Airport. However, an agreement with Arlington planners resulted in rerouting the line to serve densely populated commercial zones near Wilson Boulevard instead of following I-66’s median.
The March 1968 Adopted Regional System (ARS) plan confirmed suburban transit lines extending along I-66 to Vienna and rail corridors within Prince George’s County. Construction commenced concurrently on downtown segments of the Orange, Blue, and Red lines in December 1969. The initial operation of the shared downtown track began as the Blue Line on July 1, 1977.
In 1976, a federal directive required WMATA to reassess options for uncontracted portions of the system. Despite Tysons Corner’s significant growth in Fairfax County, diverting the Orange Line there would have postponed construction by five years due to completed environmental impact assessments. Consequently, WMATA upheld the Vienna alignment after litigation from Falls Church City, leaving Tysons without Metrorail access until the Silver Line launch in 2014.
Orange Line service was inaugurated on November 20, 1978, operating between National Airport and New Carrollton and adding five new stations beyond Stadium–Armory. On December 11, 1979, service was redirected from National Airport to run through Rosslyn toward Ballston-MU. The line reached completion on June 7, 1986 with a four-station extension to Vienna along I-66.
On January 13, 1982, an Orange Line train derailed between Federal Triangle and Smithsonian stations due to a switch being improperly secured. This accident caused three fatalities and marked Metro’s first deadly incident until a more severe collision in 2009 resulted in nine deaths.
21st century
Between 2011 and 2013, weekend service west of Ballston–MU was periodically halted to facilitate construction connecting the Silver Line with the existing Orange Line tracks. This work also involved enlarging the train yard near West Falls Church station.[1]
On June 17, 2012, during weekday peak periods, certain Orange Line trains were rerouted to serve Largo Town Center as part of WMATA's RushPlus+ program aimed at alleviating congestion on the Blue and Orange Lines. This arrangement concluded on July 26, 2014, when the Silver Line commenced operations between East Falls Church and Stadium-Armory, replacing RushPlus+ service.
From March 26 through June 28, 2020, multiple stations—including and —were skipped due to COVID-19 restrictions; all reopened by June 28 except East Falls Church, which resumed service on August 23 following platform reconstruction west of Ballston-MU.[2][3]
Between May 23 and August 15, 2020, trains terminated at Ballston–MU because of platform improvements at East Falls Church, West Falls Church, Dunn Loring, and Vienna stations. Initially planned to end at West Falls Church, the extension to Ballston–MU was implemented due to reduced ridership amid the pandemic. Shuttle buses operated to serve affected stations. Beginning August 16, train terminations shifted to West Falls Church while bypassing East Falls Church until its reopening on August 23.Cite error: The opening <ref> tag is malformed or has a bad name
Vienna and Dunn Loring stations resumed operations on September 8, 2020.Cite error: The opening <ref> tag is malformed or has a bad name
From May 28 to September 5, 2022, weekday Orange Line trains ended service at , while weekend trains terminated at Ballston–MU owing to the Platform Improvement Project that closed stations east of Stadium–Armory; shuttle bus service was provided for closed stops.Cite error: The opening <ref> tag is malformed or has a bad name
Service west of Ballston–MU was suspended starting June 3, 2023 for track replacement work. Stations and reopened on June 26, followed by and on July 17.Cite error: The opening <ref> tag is malformed or has a bad name
Automatic train operation (ATO) on the Blue and Orange Lines was reinstated in June 2025 after being suspended since the Red Line collision in 2009.Cite error: The opening <ref> tag is malformed or has a bad name On June 22, 2025, the Silver Line began running between Stadium-Armory and New Carrollton.
Route
Originating at Vienna/Fairfax-GMU station in Virginia, the Orange Line travels along the median of Interstate 66. After West Falls Church, it merges with the Silver Line before entering a tunnel beneath Fairfax Drive near Ballston–MU. The tunnel then shifts under Wilson Blvd and 16th Street North before joining the Blue Line tunnel near Rosslyn beneath North Lynn Street. The route continues under the Potomac River and I Street NW into Washington, D.C., stopping at Foggy Bottom–GWU.
Between Farragut West and McPherson Square stations lies a non-revenue connection to the Red Line near Farragut North. The tunnel proceeds southward beneath 12th Street Northwest to Metro Center’s lower level located underneath the Red Line platforms. After servicing Federal Triangle and Smithsonian stations, it turns eastward beneath D Street Southwest and then southeast under Pennsylvania Avenue Southeast toward L’Enfant Plaza where it intersects with Green and Yellow Lines.
Continuing eastward past Potomac Avenue station, the line briefly tunnels beneath G Street Southeast before heading north under 19th Street Southeast to reach Stadium-Armory station. The tracks emerge near Benning Road after passing beneath RFK Stadium parking areas. Elevated tracks follow Benning Road crossing over the Anacostia River, diverging from both Blue and Silver Lines.
After this separation, Orange Line tracks run above ground along DC Route 295 between Minnesota Avenue and Deanwood stations. The line then parallels CSX/Amtrak/MARC rail corridors through Prince George’s County in Maryland, serving Cheverly and Landover stations before terminating at New Carrollton.
The route features storage yards adjacent to West Falls Church as well as beyond New Carrollton. Orange Line operations encompass the entire K Route segment (Vienna/Fairfax-GMU to C & K junction south of Rosslyn), a portion of the C Route (from C & K junction to Metro Center), and fully cover the D Route (Metro Center to New Carrollton).
To maintain peak service levels requires a total of 30 trains—comprising nine eight-car sets and twenty-one six-car sets—amounting to 198 rail cars in operation.
Stations
The stations listed below are arranged from west to east:
Future
In 2008, the Virginia Department of Transportation (VDOT) together with the Virginia Department of Rail and Public Transportation (VDRPT) initiated the preparation of an environmental impact statement (EIS) for the I-66 corridor traversing Fairfax and Prince William counties. The I-66 Multimodal Transportation and Environment Study aims to improve travel efficiency along I-66, spanning from the Capital Beltway (I-495) interchange to U.S. Route 15. Within the EIS, a proposed extension of the Orange Line includes four new stations beyond Vienna, situated within the I-66 median at Chain Bridge Road, Fair Oaks, Stringfellow Road, and Centreville near Virginia Route 28 and U.S. Route 29. There have also been suggestions to extend the Orange Line further to Bowie. Nonetheless, the final analysis published in 2012 determined that this extension would yield only marginal increases in Metrorail usage and provide limited congestion relief within the targeted corridor.