M Ocean View
| Company type | Light rail service |
|---|---|
| Industry | Public transportation |
| Founded | 1925-10-06 |
| Headquarters | San Francisco , United States |
Area served | San Francisco, California |
| Products | Light rail transit service |
| Website | www |
The M Ocean View line is part of San Francisco's Muni Metro network, operating as a light rail service. Its name is derived from the Oceanview neighborhood it serves, linking downtown at Embarcadero station with the Balboa Park vicinity near San Jose and Geneva. Notable stops along the route include Oceanview, San Francisco State University, and Stonestown Galleria. The service began on October 6, 1925.
Route description
Commencing in the Financial District at Embarcadero station, the line travels through the shared Market Street subway tunnel alongside three other Muni Metro routes. It then continues through the historic Twin Peaks Tunnel before emerging at West Portal Station. From this point, it runs along West Portal Avenue to Saint Francis Circle, after which it transitions onto a dedicated right-of-way along 19th Avenue.
Between Eucalyptus Drive and Junipero Serra Boulevard on 19th Avenue, the line operates on a segregated right-of-way featuring two elevated platforms: one located at Stonestown Galleria (Winston Drive) and another at San Francisco State University Station (Holloway Avenue). Beyond Junipero Serra Boulevard, the route proceeds to Randolph Street, then turns onto Orizaba Avenue to reach Broad Street. It continues along San Jose Avenue until arriving at Geneva Avenue, where it loops near the Metro yard opposite Balboa Park Station.
Operation
Service on the M Ocean View begins at 5 a.m. on weekdays, 6 a.m. on Saturdays, and 8 a.m. Sundays, running until approximately 12:30 a.m. daily. During daytime hours, trains arrive every 10 to 12 minutes.
When rail service is not available overnight, coverage is maintained by Owl buses. One route covers travel from Embarcadero to West Portal, while another operates between West Portal and SF State. On weekends before rail service starts, the M Ocean View Bus runs from 5 a.m., largely following the rail alignment but utilizing surface streets where the rail has exclusive rights-of-way.
History
The M Ocean View began operation on October 6, 1925, initially functioning as a shuttle between St. Francis Circle and the wye at Broad and Plymouth within the Ocean View neighborhood. On October 31, 1927, it was extended through the Twin Peaks Tunnel to reach downtown at the Ferry Building, although this was reverted back to shuttle service on February 27, 1928. Bus operations replaced the shuttle on August 6, 1939; however, streetcar service was restored across the entire route on December 17, 1944. The inner terminus shifted to the Transbay Terminal on June 6, 1948.
In contrast to many streetcar lines converted to buses after World War II, the M Ocean View retained streetcar operations due to its use of the Twin Peaks Tunnel. Starting December 2, 1972, during construction of the Market Street subway, service was rerouted via Duboce Avenue, Church Street, and 17th Street. The line was extended to Balboa Park BART station on August 30, 1980. A partial upgrade to modern light rail took place with the launch of Muni Metro on December 17, 1980. The original Eureka Valley station inside Twin Peaks Tunnel closed in 1972 and was replaced by Castro Street Station when the Market Street subway opened ten years later.
Muni Metro
During the early 1970s, Muni devised plans to extend the J Church route by adding new track segments reaching Balboa Park station, then continuing along the M Ocean View line to serve high-demand stops such as San Francisco State University station and Stonestown Galleria station. A Final Environmental Impact Statement was published in 1983; non-revenue operations commenced in August 1991, with revenue service launching in June 1993. Initial designs included upgrading stations with elevated platforms and incorporating a pocket track for J Church turnbacks, but community opposition led to the removal of the pocket track from the project.
The 19th Avenue Platform & Trackway Improvement Project necessitated bus substitutions south of St. Francis Circle between June and October 1993; upon resumption of service, new platforms were introduced while some minor stops were permanently eliminated. A subsequent phase involved a complete bus replacement starting July 1994; rail service was restored to Stonestown by November for holiday shoppers and fully reinstated by January 1995. From March 1995 until February 1998, certain weekday J and M services were through-routed until rail replacement on the M line occurred. Plans for comprehensive combined J/M service featuring automated train control and the Muni Metro Turnback were proposed but never realized.
In 2010, Muni updated the rail junction located south of St. Francis Circle station, resulting in bus substitutions south of West Portal station from May through September. The line underwent another bus replacement from June to August 2018 due to the Twin Peaks Tunnel closure. During this time, a new transit signal priority system was implemented alongside red transit-only lanes at the 19th Avenue intersection with Rossmoor Drive.
On March 30, 2020, light-rail service on the M Ocean View was suspended and replaced by buses as a result of the COVID-19 pandemic. Rail operations resumed on August 22, 2020, with route adjustments intended to enhance subway reliability; notably, M Ocean View and T Third Street services were interlined between Sunnydale station and San Jose and Geneva (Balboa Park station). However, rail service was again substituted by buses starting August 25 due to issues with overhead wire splices coupled with COVID-19-related quarantines among control personnel. Full rail service on the M line recommenced on August 14, 2021, once again terminating at Embarcadero.
Subway proposal
The M Ocean View line experiences speeds averaging only 8.5 to 9.5 mph during afternoon peak hours over a two-mile segment along 19th Avenue/Highway 1, hindered by frequent stops at heavily trafficked intersections. The majority of passengers access median stops from the west side of the street, necessitating crossing multiple lanes of traffic and raising safety concerns—55% of severe and fatal pedestrian incidents in San Francisco occur within just 7% of city street mileage, including this corridor. To address these issues, the San Francisco County Transportation Authority conducted studies in both 2010 and 2014 aimed at enhancing pedestrian safety and reducing travel times.
The fully underground alternative was chosen for advancement as part of the Muni Subway Expansion Project (MSXP). This concept retains the rail line below ground beyond West Portal station. The K Ingleside line would diverge underground and emerge near Saint Francis Circle, while the M Ocean View would continue subterraneously along West Portal Avenue and 19th Avenue before branching off at Holloway towards Parkmerced. The underground alignment proceeds with J Church service along 19th Avenue before surfacing east of the intersection at 19th and Junipero Serra Boulevard, then continuing to Balboa Park via Randolph, Broad, and San Jose streets.
West Portal station is planned for redevelopment into a two-level configuration, with K/M lines positioned below and L line above. Proposed new underground stations include Saint Francis Circle (serving K/M), Winston Drive (M line stop near Stonestown), Holloway (J/M serving SF State), and Parkmerced (M), alongside a potential infill station at Ocean Avenue within Lakeside Village. Several existing surface stations would be eliminated and substituted by these subterranean stops. The subway would extend beyond Parkmerced featuring a tail track that could connect to Daly City BART via the M line. The total estimated investment for this project is around $3 billion.
Muni Forward initiative
In 2022, the SFMTA launched the M Ocean View Transit and Safety Project as a component of the MuniForward program aimed at improving service dependability between Junipero Serra Boulevard and Balboa Park station. Early plans proposed dedicated transit lanes, extending platforms along San Jose Avenue, merging several stops, and installing four new traffic signals. A revised proposal released in May 2023 eliminated one stop consolidation and two traffic signals but introduced changes to the terminal areas at San Jose and Geneva. The "quick-build" phase is anticipated to begin in late 2023, with primary construction scheduled for 2026.
In May 2024, the Federal Transit Administration awarded SFMTA $4.7 million to construct accessible platforms at eight Muni Metro locations, including three stations on the M Ocean View route.
Station overview
The M Ocean View line services key stations in the downtown area and along 19th Avenue, while smaller stops are distributed elsewhere—typically identified by signage or concrete boarding islands designed for wheelchair accessibility. All stations are connected by Muni bus routes, with additional transit options noted where applicable.
(The complete station table continues similarly with detailed neighborhood and connection information.)