Market Street Subway

Not to be confused with the Market Street Subway in Philadelphia, through which run that city's Market-Frankford Line and SEPTA Subway-Surface Trolley Lines.

Market Street Subway

Duboce Portal at Duboce Avenue and Church Street
Overview
Line	BART   Richmond – Millbrae   Fremont – Daly City   Pittsburg/Bay Point – SFO/Millbrae   Dublin/Pleasanton – Daly City Muni Metro   J Church   K Ingleside   L Taraval   M Ocean View   N Judah   S Castro Shuttle   T Third Street
Location	San Francisco, California
System	Bay Area Rapid Transit, Muni Metro
Start	Embarcadero Station
End	Castro Street Station
No. of stations	7
Operation
Opened	1978
Owner	BART District, SFMTA
Operator	BART District, SFMTA
Character	Rapid transit, light rail
Technical
Line length	BART: ? Muni Metro: ?
Gauge	BART: 5 ft 6 in (1,676 mm) Muni Metro: 4 ft 8 1⁄2 in (1,435 mm)
Electrified	Third rail, 1000 V DC (BART) Overhead lines, 600 V DC (Muni Metro)

Market Street Subway
Legend Transbay Tube to the Embarcadero end Embarcadero Montgomery Powell Civic Center BART to 16th Street Mission Van Ness Church Castro to Twin Peaks Tunnel

The Market Street Subway is a tunnel that carries both rapid transit and light rail traffic in San Francisco, California. It runs under the length of Market Street between Embarcadero Station and Castro Street Station and is used by both Muni Metro and BART. The upper level is used by Muni Metro lines and the lower level is used by BART lines. BART does not run through the whole subway; it turns south and runs under Mission Street southwest of Civic Center Station. The eastern end of the BART level is connected to the Transbay Tube. On the Muni Metro level, the southwestern end of the Market Street Subway connects to the much older Twin Peaks Tunnel, and the northeastern end connects to the surface along the Embarcadero. The Embarcadero portal was not originally part of the Market Street Subway and was opened in 1998. It is used by the N Judah and the T Third Street lines.

The K Ingleside, L Taraval, M Ocean View, and T Third Street Muni Metro lines run through the entire tunnel and into the Twin Peaks Tunnel. The J Church and N Judah lines leave the tunnel through an exit that connects to Church Street.

Stations on the Market Street Subway

There are a total of seven stations in the tunnel. Four are used by BART, five by all of the Muni Metro lines, and two by four of the Metro lines:

• Embarcadero Station - J, K, L, M, N, and T Muni Metro lines, BART
• Montgomery Street Station - J, K, L, M, N, and T Muni Metro lines, BART
• Powell Street Station - J, K, L, M, N, and T Muni Metro lines, BART
• Civic Center Station - J, K, L, M, N, and T Muni Metro lines, BART
• Van Ness Station - J, K, L, M, N, and T Muni Metro lines
• Church Street Station - K, L, M, and T Muni Metro lines (The J stops at the station above-ground and the N stops nearby)
• Castro Street Station - K, L, M, and T Muni Metro lines