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

L.A. Metro Evaluating Phasing Eastside Gold Line Extension to Whittier

LongBeachize_Ad_Concepts
This article supported by Los Angeles Bicycle Attorney as part of a general sponsorship package. All opinions in the article are that of the author, and do not necessarily reflect those of LABA. Click on the ad for more information.
false

Metro is planning to extend the Eastside L (Gold) Line light rail to the city of Whittier. A presentation at yesterday's Metro Board Planning and Programming Committee revealed new cost estimates for the line, and how construction might be broken into multiple phases.

The overall Eastside extension alignment goes approximately nine miles; it would extend southeast from the current L Line terminus in East L.A. - through the cities of Commerce, Montebello, Pico Rivera, and Santa Fe Springs, all the way to southeast Whittier.

Metro Eastside Transit Corridor Phase 2 map
false

In East L.A. and Commerce, the line is planned to be a subway. The eastern half of the project would run at grade. A few short aerial stretches are also anticipated.

According to the Metro staff report the agency already has $3 billion set aside for the Eastside extension project, but the funding picture is a little opaque, with some Measures R and M funding, and other anticipated sources. At the time Metro's sales tax measures were passed, the proposed Eastside extension potentially included two alignments spanning both the Gateway Cities and the San Gabriel Valley sub-regions. In 2020, Metro selected the southern Gateway Cities alignment (called the Washington Boulevard Alternative), which resulted in the splitting up some of funding.

Measure M has a couple of allocations (these are in 2016 dollars - so would be adjusted upward somewhat) for the Washington alignment:

    • $543 million for the Gateway portion scheduled for 2029 - anticipated to be part of a $3 billion initial multi-region phase
    • $2.9 billion for a scheduled for 2053 (not tied to either sub-region)

Measure R has $1.3 billion for the Eastside extension, though it looks like only half this money would go to the Gateway half of the project.

And, like most mega-projects, current cost estimates are more expensive than anticipated. Metro now estimates that the entire project will cost $6.1 to $6.5 billion. Much of the cost escalation can be attributed to a decision to run the eastern portion of the project underground, instead of a combination of surface and aerial as had been proposed early on.

With costs well above funding in hand, Metro is looking to do construction in phases via what the agency calls an initial operating segment (IOS).

xxxx
Metro is at three phasing alternatives, with initial partial builds ending in Commerce or Montebello, or the entire line ending in Whittier - via Metro presentation. Mileage shown is longer than the length of line that the public would actually ride, as the segments include tracks to access the rail yard, called a Maintenance Storage Facility (MSF)
false
xxxx
Metro preliminary cost estimates for shorter Eastside extension segments - via Metro presentation
false

Metro is currently evaluating three phasing scenarios. They all appear relatively expensive, as the initial eastern portion (around three miles) of the project is all tunneling underground:

    • IOS-1 - $4.5-5 billion - includes two miles of light rail ending at Commerce/Citadel Station (totaling 3.2 miles of tracks to access a new rail yard in Commerce)
    • IOS-2 - $5.1-5.3 billion - includes four miles of light rail ending at Greenwood Avenue Station in Montebello (totaling 4.6 miles of tracks to access a new rail yard in Commerce or Montebello)
    • Full project - $6.1-6.5 billion - includes nine miles of light rail (with seven stations) ending at Lambert Road in Whittier

With a funding shortfall of over a billion dollars for the shortest partial build, Metro is definitely seeking outside funding. The agency had planned to do environmental clearance under CEQA (California Environmental Quality Act) which would allow for local and state funding to be used, but, especially with federal infrastructure money potentially available, is now anticipating also doing federal (National Environmental Protection Act - NEPA) clearance, so the project is eligible for federal funding.

Metro is also evaluating some cost-saving measures, as noted in the Metro staff report.

The xxxx
Metro is evaluating an open underground station design for the Eastside extension Atlantic Boulevard Station - via Metro presentation
false
The Atlantic Station could be configured
An open underground Atlantic Station could be similar to the Metro L Line Memorial Park Station in Pasadena - via Metro presentation
false

The Eastside extension will demolish the existing surface Atlantic Station, replacing it with a realigned underground station. One cost-saving design being considered for the Atlantic Station is an open air underground station, similar to Metro's Memorial Park Station in Pasadena.

Metro is also evaluating an at-grade station at Greenwood Avenue in Montebello, to save money compared to a planned aerial station.

Staff anticipated returning to the Metro board in June, with a funding plan for the Eastside extension, but Supervisor Hilda Solis, pushing to accelerate the project and to secure possible federal funding, scheduled that board discussion for April instead.

Metro staff anticipate that Eastside Transit Corridor construction would start in 2029, with the line opening to the public in 2035.

Stay in touch

Sign up for our free newsletter

More from Streetsblog California

The Smog President Takes California to Court

I'm not even sure which Trump-made disaster he's trying to distract people from with this latest stunt.

March 13, 2026

The Short Week in Short Videos

Diverters, e-bikes, and a cameo appearance for Joe's kitchen.

March 13, 2026

Friday’s Headlines

Man, this guy really likes smog.

March 13, 2026

Why We Can’t Have Nice Things: Drivers are Destroying Ktown Mini-Traffic Circle

Some Streetsblog readers are familiar with some of the sad history of the deadly intersection of 4th Street and New Hampshire Boulevard in L.A.’s Koreatown neighborhood. Last year, after a driver killed a 9-year-old, and after volunteers painted guerilla crosswalks, the city of Los Angeles Transportation Department (LADOT) installed official crosswalks and a temporary traffic…

March 13, 2026

Friday Video: Buenos Aires Will Challenge Everything You Think You Know About Buses

The Paris of South America has an amazing bus system — but it doesn't run like North American ones at all.

March 13, 2026

Reading Changes in City Streets

Markings on cities streets can sometimes reveal what used to be there.

March 12, 2026
See all posts