to street level at the Rosslyn Metro station is the fifth-longest continuous span escalator in the D.C. metro system. The station has entrances on the west side of North Moore Street between Wilson Boulevard and 19th Street North and on the east side of Fort Myer Drive between Wilson Boulevard and 19th Street North. A bank of three high-speed street elevators to the
mezzanine (upper) level of the station is on the east side of North Moore Street, across the street from the station entrance. The station was historically a stop for several express
Metrobus lines, including the now-discontinued
D.C.–Dulles Line (route 5A). Rosslyn is one of two stations (the other being the
Pentagon station) at which trains going one direction are boarded on a different station level than trains going the other direction, as a way to prevent an
at-grade crossing. This is because the Orange/Silver and Blue lines split apart an extremely short distance from the station. This ensures that no trains traveling in opposite directions share a track. An indicator sign at the south end of the station flashes to inform passengers of the arriving train's destination, showing Orange for , Blue for , and Silver for . This feature is only used at final transfer stations; another example being . Rosslyn is the deepest station on the three lines servicing it. The mezzanine and upper platform are below the Fort Myer Drive street-level entrance; the lower platform is below the entrance. This is because its neighborhood is on a bluff over the
Potomac River, while its shared rail line into Washington passes through a rock-bored tunnel up to The separate accessible entrance and general entrances are a relative rarity in the Washington Metro system; only , , and stations share this feature. The underground hallway to the new elevator bank contains a four-coffered arch like most underground stops on the Red Line that were opened after 1980. This is the only stop on the Blue, Orange, and Silver Lines with this arch. It is also the only stop in the system that contains both the waffle and four-coffer arch design. ==History==