LA Metro Approves $9.5B Sepulveda Underground Metro

LOS ANGELES, USA – The Los Angeles County Metropolitan Transportation Authority (Metro) has approved an underground metro alignment for the Sepulveda Transit Corridor project. The plan outlines a 22 km automated line with eight stations, budgeted at up to USD 9.5 billion. The project aims to provide a sub-20-minute connection between the San Fernando Valley and the Westside, bypassing severe road congestion.

What Is the Full Scope of This Project?

The project involves constructing an automated 22 km underground metro line with eight stations, creating a vital link across the natural barrier of the Santa Monica Mountains. The total funding allocation under Measure M could reach USD 9.5 billion, with USD 5.7 billion designated for the Valley-Westside section and an additional USD 3.8 billion reserved for a future extension to Los Angeles International Airport (LAX). The line will integrate with LA Metro’s D, E, and G lines, the future East San Fernando Valley line, and the Metrolink commuter rail network at Van Nuys Station.

Key Project Data

How Does This Compare to Similar Projects?

The project’s scale is comparable to other major North American transit expansions, such as Seattle’s Sound Transit 3 (ST3) program, which has faced significant cost overruns but recently awarded USD 1 billion in engineering contracts to advance its light rail network (Source: Construction Dive, 2025). While the Sepulveda Corridor is a passenger metro, its planned automation follows a global trend in rail efficiency, exemplified by Rio Tinto’s successful 2025 deployment of its fully automated “AutoHaul” heavy-haul freight railway in Pilbara, Australia (Source: Rail Journal). The decision to invest heavily in new fixed infrastructure comes as many US transit agencies grapple with post-pandemic ridership challenges; for instance, overall Metro Transit ridership in the Twin Cities fell by 3% in 2025 (Source: Axios).

Editor’s Analysis

Metro’s decision to proceed with a high-capacity, high-cost underground metro over a cheaper monorail signals a long-term strategic bet on reversing declining public transit usage trends. This investment in a permanent, high-speed connection aims to reshape travel patterns in a notoriously congested region, potentially spurring significant transit-oriented real estate development, a sector that saw an 8.2% rise in global investment in 2025 (Source: Law360). The ultimate success of this project will depend heavily on avoiding the cost overruns and delays that have plagued similar large-scale US infrastructure projects.

FAQ

Q: What is the main goal of the Sepulveda Transit Corridor project?
A: The primary goal is to create a fast, reliable public transit link between the San Fernando Valley and the Westside of Los Angeles. The automated metro aims to cut a journey that can take up to 80 minutes by car to less than 20 minutes.

Q: When will the Sepulveda metro line be open to the public?
A: A specific construction start date or public opening timeline has not been officially disclosed by LA Metro. The selection of the preferred alternative is a key milestone in the environmental review and planning phase which precedes construction.

Q: How will this project impact current LA Metro riders?
A: Once complete, the project will provide new, faster connections to several existing and future lines, including the D, E, and G lines. It will integrate major employment centers like UCLA and cultural landmarks into the regional rail network, significantly improving cross-county mobility.