West Santa Ana Branch Transit Corridor
LocaleLos Angeles
TerminiLos Angeles Union Station
Pioneer station
TypeLight rail
Planned opening2028 (2028)
Line length19 mi (31 km)
Number of tracks2
CharacterDedicated right of way with elevated, at-grade and underground sections
Track gauge4 ft 8+12 in (1,435 mm) standard gauge
Electrification750 V DC overhead catenary
Route map

Union Station A Line B Line D Line J Line Metrolink (California)Amtrak
*new platforms at Union Station Forecourt
or behind the Metropolitan Water District Building
Little Tokyo A Line E Line 
7th Street/Metro Center A Line E Line 
South Park/Fashion District
Alternative E Up arrow
Up arrow Alternative G
Arts/Industrial District
Up arrow Phase 2
Phase 1 Down arrow
Slauson A Line 
Florence/Salt Lake
Rio Honda Channel
I-105/C Line C Line 

The West Santa Ana Branch Transit Corridor is a planned light rail line, mostly following the Pacific Electric's historic West Santa Ana Branch, connecting Downtown Los Angeles to the City of Artesia and other cities in southeastern Los Angeles County.


See also: West Santa Ana Branch

The Los Angeles County Metropolitan Transportation Authority (Metro) has $4 billion[1][2] in funds available for construction planned to begin in 2022. The plan included in the Measure M transportation funding measure is to build improvements in two stages.

In June 2017, Metro issued a Request for Proposals to study alternatives for this new LA Metro Rail route.[3] Metro has narrowed the options to two alternatives and are currently preparing to publish the Draft EIS/EIR for public comment.[2][1] The draft EIS/EIR is planned to be released in 2020.[4]

The project's timeline is expected to be accelerated under the Twenty-eight by '28 initiative.[5]

The environmental impact report released in 2021 set an estimated cost of $8.6 billion for the line.[6]

Proposed routings and modes

The West Santa Ana Branch Transit Corridor project is proposed as a 20-mile (32 km) light rail transit line that would connect downtown Los Angeles to Artesia. Along the route, it would also serve the communities of Vernon, Huntington Park, Bell, Cudahy, South Gate, Downey, Paramount, Bellflower and Cerritos in the southeast area of the county.[1]

The southern portion route, east and south of Slauson, leaves the A Line corridor via the former Pacific Electric Whittier Line, continues south on a former BNSF rail line (Florence/Salt Lake to Paramount/Rosecrans), and then transitions to the old Santa Ana right of way (south of Paramount/Rosecrans). These corridors are owned by Ports of Los Angeles/Long Beach and Metro, requiring minimal property acquisition.

The northern alignment through Downtown Los Angeles is being studied as possible underground light rail transit route. Six options were proposed.[1] As of 2018, two options were being considered (both of which would connect to the southern alignment by paralleling the A Line between Washington and Slauson stations, as well as part of an existing freight rail line along Randolph Street):[4][2]

By March 2018, Cerritos had opted out of the project, leaving the southern terminus at Pioneer.[7] In November 2018, Metro removed the Blue Line stations north of Slauson from the study area, citing redundant service and expedited travel times as the prime reasons.[8]

In 2019, Metro announced that as part of its design analysis, it would study opening the line in two stages, with the initial opening $1 billion segment running from Pioneer Station in Artesia north to Slauson Station on the Blue Line, with the remainder of the $3 billion route into downtown built as phase two. Metro staff were "optimistic" that it would be feasible to build the line to Slauson by 2028 with existing Measure M funds. Metro was also studying public-private partnerships that could accelerate the construction schedule of the entire line. The service is not planned to interline with the A Line to 7th Street/Metro Center due to operational constraints.[9] Under the proposed plans, design for the initial segment would be complete by 2021 and construction would begin in 2022.[10]


Phase Station[1] Location Connecting
Alternative E Alternative G
2 Union Station Downtown Los Angeles Amtrak Amtrak
Metrolink (California) Metrolink
 A Line
 B Line
 D Line
 E Line
 J Line
× -
Little Tokyo/Arts District Little Tokyo  A Line
 E Line
× -
7th Street/Metro Center Financial District  A Line
 B Line
 D Line
 E Line
 J Line
- ×
9th/Main St. station
aka South Park/Fashion District station
Fashion District - ×
7th/Alameda Station
aka Arts/Industrial District station
Arts District × ×
1 Slauson Florence-Graham  A Line × ×
Pacific/Randolph Huntington Park/Walnut Park × ×
Florence/Salt Lake Bell/Cudahy × ×
Firestone South Gate × ×
Gardendale Downey × ×
I-105/C Line transfer station Paramount  C Line × ×
Paramount/Rosecrans × ×
Bellflower Bellflower × ×
Pioneer Artesia × ×

Extension into Orange County

Metro is evaluating an optional station in Cerritos at Bloomfield Avenue (just north of the Los Angeles-Orange county line) to facilitate a possible future extension into Orange County; it would eventually connect to the under construction OC Streetcar, which also uses part of the Pacific Electric WSAB right-of-way.[4]


  1. ^ a b c d e "West Santa Ana Branch Transit Corridor". Los Angeles County Metropolitan Transportation Authority. Retrieved 2018-06-28.[non-primary source needed]
  2. ^ a b c Tinoco, Matt (24 May 2018). "Metro directors pick two options for new rail line through Downtown LA". Curbed LA. Retrieved 2 February 2021.
  3. ^ "Metro West Santa Ana Branch Rail Recommended Route(s) To Go To Metro Board This Month". Streetsblog Los Angeles. May 2018. Retrieved 2018-06-28.
  4. ^ a b c "Project Alternatives". Los Angeles County Metropolitan Transportation Authority. Retrieved 2018-12-02.[non-primary source needed]
  5. ^ Sharp, Steven (27 November 2018). "Here are the 28 Projects that Metro Could Complete Before the 2028 Olympics". Urbanize. Retrieved 2 July 2018.
  6. ^ Fine, Howard (20 December 2021). "Metro Planning Rail Routes into County's Southeast Quadrant". Los Angeles Business Journal. Retrieved 31 December 2021.
  7. ^ Hews, Brian (11 March 2018). "METRO TO HOLD MEETINGS ON WEST SANTA ANA BRANCH TRANSIT PROJECT, THE 20-MILE LIGHT RAIL FROM ARTESIA TO DOWNTOWN LOS ANGELES". Cerritos Community News. Hews Media Group. Retrieved 2 February 2021.
  8. ^ (PDF) https://media.metro.net/projects_studies/westSantaAnaBranch/images/board_report_WSAB_2018-11.pdf. Retrieved 7 May 2020. Missing or empty |title= (help)[non-primary source needed]
  9. ^ (PDF) http://media.metro.net/projects_studies/westSantaAnaBranch/images/wsab_Board_Report.pdf. Retrieved 7 May 2020. Missing or empty |title= (help)[non-primary source needed]
  10. ^ "LA Metro to present latest West Santa Ana light-rail plan to the public". Progressive Railroading. 2 January 2021. Retrieved 2 February 2021.
  11. ^ "Bus and Rail System Map" (PDF). Los Angeles County Metropolitan Transportation Authority. Retrieved 2018-12-03.[non-primary source needed]