Type Light rail Opened 1995 Operator San Francisco Muni | System Muni Metro Locale San Francisco | |
 | ||
Stations 11
20 (limited service) Rolling stock 151 Breda light rail vehicles
(high floor) Track gauge 4 ft 8 ⁄2 in (1,435 mm)
(standard gauge) Owner San Francisco Municipal Transportation Agency Terminis Embarcadero station, San Francisco 4th and King Street Station, Castro Street Station, West Portal Station | ||
The S Castro Shuttle is a Muni Metro line in San Francisco, California. At its inception in 1995, it ran from Embarcadero Station downtown to the Castro Street Station during peak periods on weekdays. The service stopped running in the early 2000s as the number of available light rail vehicles went down due to maintenance issues.
As of 2016, the line runs from St. Francis Circle to Embarcadero station with limited service beyond to 23rd Street. The line also runs when there is a home game at AT&T Park, continuing from King and 4th Street to West Portal Station for extended hours. During these times the shuttle will occasionally run a three car formation, being the only line that will do this regularly.
On November 7, 2016, S shuttle service resumed with two extra one-car trains running between Embarcadero and West Portal during the morning rush hour, for a total of ten total trips. The service increase is planned to reduce overcrowding along the L, M, and K lines between the line's terminal stations. This addition was viewed as a strategic way to use limited resources to provide more service. This service improvement is part of Muni Metro's Muni Forward program to add more true subway service.
The S Castro Shuttle is the only line not included on any Muni Metro map or on NextBus. The service is not a true shuttle train.