Sepulveda Transit Corridor Project

A high-capacity rail line connecting the San Fernando Valley to Westside and eventually LAX — relieving congestion and transforming how Los Angeles moves

Project Type

Less Traffic

Current Phase

Environmental Review

Sepulveda Transit Corridor Study Area Map

The Sepulveda Transit Corridor is a proposed high-capacity rail line that will provide a crucial north-south transit connection between the San Fernando Valley, the Westside and eventually Los Angeles International Airport (LAX). Currently under environmental review, Metro is evaluating multiple alternatives — including heavy rail and monorail technologies — to address one of the most heavily traveled and congested corridors in Los Angeles County.

If built, the line could serve more than 120,000 daily riders and offer a travel time of just 20 minutes between the Valley and Westside. This project is funded in part by Measure M and aims to support regional growth, environmental sustainability, and equity in transit access. Metro is partnering with engineering firms and local municipalities to identify the most effective and community-supported solution.

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Project News

1980 – Prop A Funding Approved

Los Angeles County voters pass Proposition A, initiating the first dedicated sales tax for rail transit and identifying Sepulveda Pass as a priority corridor.

2008 – Measure R Allocates $1B

Measure R dedicates $1 billion to the Sepulveda Transit Corridor, marking the first major regional investment toward future heavy transit in the corridor.

2014 – Completion of I-405 Widening Project

The $1.6 billion Sepulveda Pass Improvements Project adds a northbound HOV lane and reconstructs major interchanges but has limited impact on transit speed or reliability.

2016 – Measure M Commits $9.5B

Measure M secures $5.7B for Valley–Westside rail (target 2033) and $3.8B for Westside–LAX rail (target 2057), the largest transit investment for this corridor.

2017 – Metro Launches Feasibility Study

Metro evaluates 48 alternatives for connecting the Valley to the Westside, including heavy rail, monorail, and other alignments.

2019 – Final Feasibility Report Released

Metro narrows project options to six, paving the way for formal environmental review and funding strategies.

2021 – Pre-Development Agreements (PDAs) Signed

Metro partners with LA SkyRail Express and Sepulveda Transit Corridor Partners to advance monorail and heavy rail alternatives for the corridor.

2021 – Environmental Review Begins

Metro releases the Notice of Preparation, officially starting the Environmental Impact Report (EIR) process for six project alternatives.

2024 – ExpressLanes Conversion Study Advances

Metro and Caltrans evaluate converting existing I-405 HOV lanes to ExpressLanes between I-10 and US-101 to enhance transit speed and carpooling.

2025 (Expected) – Draft EIR Release & LPA Selection

Metro is anticipated to release the Draft Environmental Impact Report and select a Locally Preferred Alternative (LPA), determining the future of Sepulveda Corridor rail.

Frequently Asked Questions

What is the Sepulveda Transit Corridor?

A proposed rail line offering a fast, high-capacity transit connection between the San Fernando Valley, Westside, and LAX.

What alternatives are being considered?

Metro is currently reviewing six alternatives, including both heavy rail and monorail options, both with varying alignments.

When will the line be built?

The project is currently in the planning and environmental review phase. A construction timeline will be shared once a preferred alternative is selected.

How is this project being funded?

Funding comes in part from Measure M, with additional support from local, state, and federal sources.

What are the proposed new stations?

While station locations are still under evaluation, alternatives include stops at key destinations such as: