Draft:Langston Boulevard–McPherson Square Line

The Langston Boulevard–McPherson Square Line one of the most underused route, only serving 186 riders on weekdays.^[1] The line operates out of the Four Mile Run division.

Route 3Y provides service in Rosslyn via Langston Boulevard before entering Washington, D.C.. Route 3F provides a somewhat Limited-stop service in Washington, D.C. before entering Arlington. However, the 3F doesn't provide service along Langston Boulevard or Rosslyn but instead goes straight to East Falls Church station upon leaving Washington, D.C.

Bus stop	Direction	Connections
Arlington, Virginia
East Falls Church Bus Bay B and D	Westbound terminal, Eastbound station	Metrobus: 2A, 3Y, 26A, 28A Arlington Transit: 52, 53, 55 Fairfax Connector: 715, 803 Washington Metro:
Washington, D.C.
Constitution Avenue NW / 22nd Street NW	Eastbound
Constitution Avenue NW / 21st Street NW	Eastbound	Metrobus: 3Y 16Y
Constitution Avenue NW / 20th Street NW	Eastbound	Metrobus: 16Y (Westbound only)
Constitution Avenue NW / 19th Street NW	Eastbound
Constitution Avenue NW / 17th Street NW	Bidirectional
Constitution Avenue NW / 16th Street NW	Westbound
Constitution Avenue NW / 15th Street NW	Westbound
Constitution Avenue NW / 14th Street NW	Eastbound
14th Street NW / Constitution Avenue NW	Westbound
12th Street NW / Constitution Avenue NW Federal Triangle	Eastbound	Metrobus: 59, 63, 64, S2 Washington Metro:
Pennsylvania Avenue NW / 12th Street NW	Eastbound	Metrobus: 32, 33, 36
13th Street NW / G Street NW Metro Center	Eastbound	Metrobus: D6 Washington Metro:
14th Street NW / D Street NW	Westbound	Metrobus: 52, 11Y, 16E
14th Street NW / Pennsylvania Avenue NW	Westbound	Metrobus: 32, 33, 36, 52, 11Y (Northbound only), 16E
14th Street NW / F Street NW	Westbound	Metrobus: 52, 54, 11Y (Northbound only), 16E
14th Street NW / G Street NW	Westbound	Metrobus: 52, 11Y (Northbound only), 16E
14th Street NW / I Street NW McPherson Square	Westbound	Metrobus: 52, 54, 59, 80, D6, G8, S2, S9, X2 Washington Metro:
13th Street NW / H Street NW	Eastbound terminal, Westbound station	Metrobus: 80 (Northbound only), D6, G8 (Eastbound only), X2 (Eastbound only) 3Y, 16Y

Bus stop	Direction	Connections
Arlington, Virginia
East Falls Church Bus Bay B and D	Westbound terminal, Eastbound station	Metrobus: 2A, 3F, 26A, 28A Arlington Transit: 52, 53, 55 Fairfax Connector: 715, 803 Washington Metro:
North Sycamore Street / 22nd Road North	Bidirectional	Fairfax Connector: 52 (Westbound only), 53A (Westbound only), 53B (Westbound only), 55
Langston Boulevard / North Roosevelt Street	Eastbound	Arlington Transit: 55
Langston Boulevard / North Quantico Street	Bidirectional	Arlington Transit: 55
Langston Boulevard / North Quantico Street	Bidirectional	Arlington Transit: 55
Langston Boulevard / North Potomac Street	Bidirectional	Arlington Transit: 55
Langston Boulevard / North Powhatan Street	Bidirectional	Arlington Transit: 55
Langston Boulevard / John Marshall Drive	Bidirectional	Arlington Transit: 55
Langston Boulevard / North Lexington Street	Bidirectional	Arlington Transit: 55
Langston Boulevard / North Jefferson Street	Bidirectional	Arlington Transit: 55
Langston Boulevard / North Harrison Street	Bidirectional	Fairfax Connector: 55
Langston Boulevard / North Greenbrier Street	Eastbound	Arlington Transit: 55
Langston Boulevard / George Mason Drive	Bidirectional	Arlington Transit: 55
Langston Boulevard / North Culpeper Street	Bidirectional	Arlington Transit: 55
Langston Boulevard / North Glebe Road	Bidirectional	Metrobus: 23A, 23T Arlington Transit: 55, 72
Langston Boulevard / North Albemarle Street	Bidirectional	Arlington Transit: 55
Langston Boulevard / Lorcom Lane	Westbound	Arlington Transit: 55, 62
Cherry Hill Road / North Woodrow Street	Eastbound	Arlington Transit: 55
Cherry Hill Road / Lorcom Lane	Westbound	Arlington Transit: 55, 62
Cherry Hill Road / North Vermont Street	Eastbound	Arlington Transit: 55, 62
Cherry Hill Road / North Thomas Street	Bidirectional	Arlington Transit: 55, 62
Cherry Hill Road / North Strafford Street	Eastbound	Arlington Transit: 55
Cherry Hill Road / North Taylor Street	Westbound	Arlington Transit: 55
Cherry Hill Road / 21st Road North	Westbound	Arlington Transit: 55
Cherry Hill Road / North Randolph Street	Eastbound	Arlington Transit: 55
Langston Boulevard / Quincy Street	Eastbound	Arlington Transit: 55
Langston Boulevard / North Oakland Drive	Bidirectional	Arlington Transit: 55
Langston Boulevard / North Monroe Street	Eastbound	Arlington Transit: 55
Langston Boulevard / North Lincoln Street	Westbound	Arlington Transit: 55
3206 Langston Boulevard	Eastbound	Arlington Transit: 55
Langston Boulevard / Spout Run Parkway	Bidirectional	Arlington Transit: 55
Langston Boulevard / North Highland Street	Bidirectional	Arlington Transit: 55
Langston Boulevard / North Cleveland Street	Bidirectional	Arlington Transit: 55
Langston Boulevard / North Adams Street	Bidirectional	Arlington Transit: 55
Langston Boulevard / North Veitch Street	Eastbound	Arlington Transit: 55
Langston Boulevard / North Vance Street	Westbound	Arlington Transit: 55
Langston Boulevard / North Rhodes Street	Eastbound	Arlington Transit: 55
Langston Boulevard / Scott Street	Westbound	Arlington Transit: 55
Langston Boulevard / North Quinn Street	Eastbound	Arlington Transit: 55
Langston Boulevard / North Oak Street	Westbound	Arlington Transit: 55
Langston Boulevard / North Nash Street	Bidirectional	Arlington Transit: 55
Washington, D.C.
Constitution Avenue NW / 21st Street NW	Eastbound	Metrobus: 3F, 16Y
19th Street NW / Virginia Avenue NW	Westbound	Metrobus: 16Y
19th Street NW / E Street NW	Westbound	Metrobus: 11Y, 16Y
18th Street NW / E Street NW	Eastbound	Metrobus: 42, 43, 11Y, 16Y
19th Street NW / F Street NW	Westbound	Metrobus: 42, 43, 11Y, 16Y
18th Street NW / F Street NW	Eastbound	Metrobus: 42, 43, 11Y, 16Y
19th Street NW / G Street NW	Westbound	Metrobus: 42, 43, 11Y, 16Y
18th Street NW / G Street NW	Eastbound	Metrobus: 42, 43, 11Y, 16Y
18th Street NW / Pennsylvania Avenue NW	Eastbound	Metrobus: 32, 33, 36 42, 43, 11Y, 16Y
19th Street NW / F Street NW	Westbound	Metrobus: 42, 43, 11Y, 16Y
18th Street NW / F Street NW	Eastbound	Metrobus: 42, 43, 11Y, 16Y
19th Street NW / I Street NW	Westbound	Metrobus: 11Y, 16Y
18th Street NW / I Street NW Farragut West	Eastbound	Metrobus: 42, 43, 11Y, 16Y Washington Metro:
I Street NW / 18th Street NW Farragut West	Westbound	Metrobus: 42, 43, 11Y, 16Y Washington Metro:
K Street NW / 17th Street NW Farragut North	Eastbound	Metrobus: 16Y, 38B, D6 Washington Metro:
I Street NW / 17th Street NW Farragut Square	Westbound	Metrobus: 3Y, 11Y, 16Y, 33, 36, 38B, 80, D6, G8, L2, N2, N4, N6, X2 DC Circulator:   Georgetown – Union Station MTA Maryland Bus: 901, 902, 904, 905, 909, 950, 995 Loudoun County Transit PRTC OmniRide Washington Metro: (at Farragut West) (at Farragut North)
K Street NW / 16th Street NW	Eastbound	Metrobus: 16Y, S2, S9
K Street NW / 15th Street NW	Eastbound	Metrobus: 80, 16Y
K Street NW / 14th Street NW	Eastbound	Metrobus: 16E, 16Y, 52, 54, 59
K Street NW / 13th Street NW	Eastbound	Metrobus: 80, 16E, 16Y, D6, S2, S9
11th Street NW / I Street NW	Eastbound	Metrobus: 63, 64 16Y
11th Street NW / H Street NW	Eastbound	Metrobus: 63, 64, 16Y
I Street NW / 15th Street NW McPherson Square	Westbound	Metrobus: 32, 33, 36, 80, 11Y, D6, G8, S2, X2 Washington Metro:
13th Street NW / H Street NW	Eastbound terminal, Westbound station	Metrobus: 80 (Northbound only), D6, G8 (Eastbound only), X2 (Eastbound only) 3F, 16Y

In 2004, WMATA announced that new route 3Y would enter service as the Lee Highway–Farragut Square Line, operating between the Lee Heights/Waverly Hills area and McPherson Square via North Woodrow Street, turn right onto Lee Highway, continue along I-66 and The Theodore Roosevelt Bridge, E Street Expressway, E Street, turning left onto 18th Street, right onto K Street, right onto 14th Street to the terminal stand on the west side of 14th Street, south of I (Eye) Street.^[2]

On December 13, 2015, the route was extended to East Falls Church station. Service along North George Mason Drive, Patrick Henry Drive and North Harrison Street was discontinued and is now provided by ART 51.^[3]

After a suspension,^[4] Route 3Y service was restored between Farragut Square and Lee Highway & North George Mason Drive. However, service to East Falls Church was fully eliminated. In addition, the route was changed to begin northbound on 13th & H streets NW and operate along I (Eye) Street NW. Service would no longer operate along 15th & K streets NW.^[5]

On December 17, 2021 service was re-extended to East Falls Church station. On the same day, Route 3F began service, operating between Farragut Square and East Falls Church.^[6]

Due to weight restrictions,^[7] on May 29, 2022, the line was rerouted off of Roosevelt Bridge. Eastbound trips used the Arlington Memorial Bridge, eliminating service on E Street NW & 20 Street NW and westbound trips used the Whitehurst Freeway and Key Bridge. Due to the renaming of Langston Boulevard from Lee Highway, the Line was renamed to its current name, the "Langston Boulevard–McPherson Square Line."^[8][9]

On December 17, 2023, the eastbound route was changed. The route was changed to serve K, 11th, G, and 13th streets NW for operational safety. Buses now no longer turn from eastbound K Street to southbound 14th Street NW across the K Street service road.^[10]

In WMATA's FY2025 proposed budget, they proposed to eliminate routes 3Y and 3F. Alternative service would be provided by ART Route 55 and the Washington Metro's Orange and Silver Lines.^[11][12]