10 things to know about the DC Metro

The DC Metro is the youngest of the big American subways and by far the most self-conscious about it. It was designed as a single object, by a single architect, for a capital that wanted its transit to look like federal architecture rather than a basement. Fifty years on, that decision still shapes everything a rider notices: the concrete coffers, the indirect light, the escalators that go on for a genuinely absurd amount of time.

Here are ten things worth knowing about WMATA's network, most of which you can check the next time you are standing on a platform. If you want the stations in front of you while you read, the Washington explorer has a page per line and per station, and the daily station guessing game uses all 98 of them.

1. It opened in 1976 with a stub you could walk in half an hour

Metro opened on 27 March 1976 with 4.6 miles of Red line between Rhode Island Avenue and Farragut North. That is it. No Virginia, no Maryland suburbs, no transfers, because there was nothing to transfer to. Rides were free all day and, according to contemporary accounts collected by Transportation History, WMATA expected around 10,000 people and got more than 40,000.

Everything else arrived in increments over the next 47 years, which is why the system's opening dates read like a map of where Washington's money went: the Virginia core in 1977, the Orange line out to New Carrollton in 1978, the Maryland Red line branches through the 1980s, the Green line mostly in the 1990s and 2001, and the Silver line in 2014 and 2022.

2. The stations are one man's kit of parts

The coffered concrete vault you are standing under is Harry Weese's. The Chicago architect did not design 98 stations, he designed a system: a repeatable vocabulary of vaults, bronze-tone pylons, hexagonal floor tiles and light hidden behind the platform edge rather than hanging over your head. New stations built decades after his death still follow it.

It worked. The American Institute of Architects gave Metro its Twenty-five Year Award in January 2014, an award reserved for designs of enduring significance, and cited exactly that kit of parts. In the AIA's 2007 public poll of America's favourite architecture, Metro was the only brutalist entry in the entire list of 150.

3. No transit system in North America owns more escalators

That is not a boast, it is a maintenance problem with a Guinness World Record attached. WMATA's own figures put the fleet at more than 600 escalators, the largest of any transit agency on the continent, spread across 91 stations, plus over 300 elevators.

The reason is geology and ambition. Washington's downtown stations sit deep, in rock, and Weese's design put the mezzanine well below the street, so almost every entrance needs a long machine to get you there. When a system is built that way, escalator outages stop being an inconvenience and become the thing riders complain about most.

4. The deepest station has no escalators at all

Forest Glen, on the Red line in Montgomery County, sits 196 feet down, the deepest in the system and in Maryland. At that depth an escalator would have been longer than anything WMATA could sensibly maintain, so the station has none. Six high-speed elevators do the whole job.

The knock-on effects are the fun part. Forest Glen is the only Metro station fitted with fire doors to protect passengers during a train fire, and its emergency exit is a staircase roughly twenty storeys tall. Nobody who has used it recommends it.

5. Station names got so long that Metro wrote a rule

Every jurisdiction Metro touches wanted its landmark on the map, and by the late 2000s the map was losing. The extreme case was U St/African Amer Civil War Memorial/Cardozo, 44 characters of station name on a strip map designed for about a third of that.

In November 2011 the WMATA board voted to cap primary names at 19 characters, and 13 for transfer stations, with anything else demoted to a subtitle. From June 2012 the station is simply U Street. Rider surveys had already established the obvious: people called it U Street anyway.

6. Five of the six lines meet in one station

L'Enfant Plaza serves the Green, Yellow, Blue, Orange and Silver lines, five of six, on two perpendicular levels: side platforms upstairs running north to south, an island platform downstairs running east to west. No other station in the system comes close.

That concentration is deliberate and it is also the network's weakness. Downtown, several lines share the same pair of tracks, so a single stalled train on the Blue line can stall the Orange and Silver behind it. Metro's central tunnels are shared infrastructure pretending to be six independent lines.

7. Only two stations have ever been squeezed into a finished line

Infill stations, meaning a new station inserted between two that already exist, are rare here. Metro has built exactly two in fifty years: NoMa-Gallaudet U on the Red line in 2004, largely paid for by nearby landowners and developers, and Potomac Yard on the Blue and Yellow lines in 2023.

Potomac Yard shows why there are only two. It was meant to open in 2016, slipped year after year, needed a shutdown of the Potomac bridge segment in late 2022 to be tied into the network, and finished at roughly 370 million dollars against early estimates of 150 to 240 million. Adding a stop to a working railway is harder than building the railway.

8. One station was deleted from the map before it was ever built

Between Stadium-Armory and Minnesota Avenue, the original plan had a station at Oklahoma Avenue. The Kingman Park neighbourhood objected, not to the station so much as to the thousand-car commuter parking lot attached to it, and the District government sided with the residents. WMATA dropped it in 1977 and extended the tunnel straight through.

It is the closest thing the DC Metro has to a ghost station: no platform, no walled-off shell, just a long gap on the Orange line where a stop was supposed to be. WMATA's 2013 regional plan still lists Oklahoma Avenue as a potential infill site, which after half a century is a fairly generous use of the word potential.

9. It serves two airports, and the second one took 51 years

Reagan National got a station in 1977, on an elevated platform right beside the terminals. Dulles had to wait until 15 November 2022, when the Silver line finally reached it. Engineering studies had proposed a Dulles rail station as early as 1971.

The version that opened is not the one that was drawn. An underground station 550 feet from the main terminal was abandoned in 2011 to save around 330 million dollars, so the station sits above ground next to daily parking garage 1, about 1,150 feet away, connected by an existing pedestrian tunnel with moving walkways. Bring a spare five minutes.

10. The map is a design object in its own right

Metro's diagram was drawn by Lance Wyman, the American designer best known for the 1968 Mexico City Olympics identity and the Mexico City Metro's pictogram system. He and his partner Bill Cannan worked on Washington's mapping, system diagram and neighbourhood maps from 1971 until opening in 1976, with six bold coloured lines borrowed conceptually from the London Underground.

Wyman was brought back decades later to revise his own work when the Silver line arrived. Very few transit maps in the world can say the original designer was still updating them 40 years on. You can see the same six colours, Red, Orange, Yellow, Green, Blue and Silver, across every line page in the explorer.