B (SEPTA Metro)

"Broad Street Line" redirects here. For the London railroad line sometimes called the "Broad Street branch", see North London Line City Branch.

An express train at Walnut–Locust station in 2024
Overview
Status	Operational
Owner	City of Philadelphia
Locale	Philadelphia, Pennsylvania, U.S.
Termini	NRG Station  Walnut–Locust  8th–Market    Fern Rock T.C.  Olney T.C. (weekdays, partial)
Stations	24
Website	www.septa.org/schedules/B
Service
Type	Rapid transit
System	SEPTA Metro
Services	Local  Express  Spur
Operator(s)	1928–39: Philadelphia Rapid Transit Co. 1940–68: Philadelphia Transportation Co. 1968–present: SEPTA
Depot	Fern Rock Transit Center
Rolling stock	Kawasaki B-IV Subway trains
Daily ridership	79,155 (FY 2023)
History
Opened	September 1, 1928 (1928-09-01)
Last extension	April 8, 1973
Technical
Line length	12.5 mi (20.1 km)
Number of tracks	2–4
Character	Underground and surface
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Electrification	Third rail, 600 V DC
Route map SEPTA Main Line to Glenside Fern Rock T.C. Fern Rock Yard Olney T.C. Logan Wyoming Hunting Park Roosevelt Boulevard Subway (proposed) Erie Broad–Allegheny Northeast Corridor North Philadelphia North Philadelphia North Broad Susquehanna–Dauphin Cecil B. Moore Broad–Girard Broad–Ridge Spur Fairmount Spring Garden Broad Street│Ridge Spur Chinatown PATCO to Lindenwold Race–Vine 8th–Market PATCO 8th & Market Suburban Station Main Line to 30th Street Station 15th Street/​City Hall 15th Street/​City Hall PATCO 12–13th Walnut–Locust PATCO 15–16th Lombard–South Ellsworth–Federal Tasker–Morris Snyder Oregon NRG Station Underground concourse/transfer station Free transfer between services Non-free transfer between services Surface buses connect at all stations

The B, formerly known as the Broad Street Line (BSL), is a rapid transit line in the SEPTA Metro network in Philadelphia, Pennsylvania, United States. The line runs primarily north–south under Broad Street from the Fern Rock Transit Center in North Philadelphia through Center City Philadelphia to NRG Station at Pattison Avenue in South Philadelphia. The Ridge spur follows Ridge Avenue between Fairmount Avenue and Market Street.

The line, which is entirely underground except for the northern terminus at Fern Rock, has four tracks in a local/express configuration from Fern Rock to Walnut–Locust and two tracks in the southern portion. With about 115,000 boardings on an average weekday in 2019, it is the second-busiest route in the SEPTA system.