Skip to Content
Streetsblog California home
Streetsblog California home
Log In
LA Metro

Metro West Santa Ana Branch Light Rail Alignments Narrowed

Metro’s West Santa Ana Branch study area. All images via Metro staff reports

Today Metro's Planning and Programming Committee approved four specific West Santa Ana Branch light rail alignments to be used for environmental studies.

The West Santa Ana Branch is a historic Pacific Electric Streetcar right-of-way that runs diagonally through southeast L.A. County cities including Paramount, Bellflower and Artesia. Measure M includes funding for two phases of light rail on the West Santa Ana Branch, with the line ultimately expected to run from Union Station to the city of Artesia.

In September 2016, the Metro board approved a four-year $12 million contract with Parsons Brinckerhoff to complete environmental clearance work for the line. The environmental clearance studies follow several earlier preliminary studies by the Southern California Association of Governments and Metro.

The southern portion of the line runs on a very clear off-street rail right-of-way. The alignment for the northern portion, connecting to Union Station, has not been finalized. With various options including extensive aerial tracks and subway tunnels, the northern portion looks like it will be relatively expensive.

Potential northern alternatives for the West Santa Ana Branch light rail. Image via Metro staff presentation
Potential northern alternatives for the West Santa Ana Branch light rail. Image via Metro staff presentation
false

Today, the committee approved further study on four alignments for the northern portion of the line, two along the Pacific Boulevard corridor, two along the Alameda Street/Blue Line corridor. Metro labels the alignments as follows:

    1. Pacific Boulevard/Alameda Street
    2. Pacific Boulevard/Vignes Street
    3. Alameda Street
    4. Alameda Street/Vignes Street

The four alignments are mapped below.

West Santa Ana Branch Pacfic/Alameda alignment
West Santa Ana Branch Pacfic/Alameda alignment
false
West Santa Ana Branch Pacfic/Vignes alignment
West Santa Ana Branch Pacfic/Vignes alignment
false
West Santa Ana Branch Alameda alignment
West Santa Ana Branch Alameda alignment
false
West Santa Ana Branch Alameda/Vignes alignment
West Santa Ana Branch Alameda/Vignes alignment
false
West Santa Ana Branch timeline
West Santa Ana Branch timeline
false

Metro plans to scope their Environmental Impact Report this spring, then prepare the full EIR, which the agency expects to approve in late 2019.

For additional details, see Metro's article at The Source and Metro's project page.

Stay in touch

Sign up for our free newsletter

More from Streetsblog California

California Bill Aims to Modernize Coastal Development Rules in Urban Transit-Rich Cities

New legislation is the first serious effort to reign in the Coastal Commission's purview over housing and transportation projects

February 9, 2026

Monday’s Headlines

Republicans keep trying to ruin high speed rail, paid car parking in the Southland, Safe Streets in Fresno and more...

February 9, 2026

Traffic Safety or Culture War? Trump’s Desire to ‘Own The Libs’ Undermines Safety

Why is the federal government truly playing politics over rainbow crosswalks when human lives are at stake?

February 8, 2026

The Week in Short Video

Protests, Equity, High-Speed Rail, and...bungees?

February 6, 2026

Santa Monica/West L.A. Leaders Urge Caltrans to Build “Ohio to Ohio” Bike Link With Santa Monica Boulevard Rehab

While Westside officials are pushing Caltrans to add some needed bike infrastructure, their logic contradicts the City of L.A.'s efforts to dodge implementing Measure HLA.

February 6, 2026

Friday’s Headlines

Transit fiscal cliffs, transit to parks, Waymos and more...

February 6, 2026
See all posts