I-10 ExpressLanes Extension

Improving travel on I-10 with upgraded carpool and toll lane options

Project Type

Mixed-Mode

Current Phase

Planning

Estimated Project Completion

2030

Metro and Caltrans are planning improvements along the I-10 corridor between I-605 and the Los Angeles/San Bernardino County line—a heavily traveled route for drivers, carpools, and buses. Proposed options include converting existing carpool (HOV) lanes to High-Occupancy Toll (HOT) ExpressLanes, adding a second ExpressLane in each direction, or expanding HOV capacity. These upgrades aim to ease congestion, improve travel time reliability, and create a continuous ExpressLanes network into San Bernardino County. The corridor serves diverse communities, including El Monte, Baldwin Park, Pomona, and Claremont, as well as unincorporated areas like Avocado Heights and South San Jose Hills. An environmental review is underway, including technical studies and public input. A Draft Environmental Impact Report/Environmental Assessment (EIR/EA) is expected in 2026, with construction anticipated to begin in 2029.

Learn

Explore the Extension

Learn more about the project’s alternatives under evaluation, ranging from no-build to new ExpressLanes.

Read the Fact Sheet

Engage

Connect With Metro

Explore the details of this project, including how ExpressLanes work and what this means for carpoolers, transit riders and solo drivers.

View the FAQs

Take Action

Attend a Community Meeting

Stay informed by attending an upcoming community meeting, either virtually or in-person.

Events

No Events Found

Documents

Folder

Name

Type

Name of the document if it’s long

Description of folder if the description is too long then it will

Name of the document if it’s long

Description of folder if the description is too long then it will

1.25GB

Download

Name of the document if it’s long

Description of folder if the description is too long then it will

Open Link

Frequently Asked Questions

Why is this project needed?

The I-10 corridor faces daily congestion, unreliable travel times and limited options for high-capacity movement. This project will improve mobility by moving more people and goods efficiently and offering faster, more predictable travel options for drivers, carpoolers and transit riders.

What alternatives are being studied?

Metro and Caltrans are evaluating three options:

•Alternative 1: No Build (keep existing lanes)

•Alternative 2: Convert the existing carpool lane into an ExpressLane

•Alternative 3: Add a second ExpressLane in each direction and convert the existing HOV lane to an ExpressLane

How do ExpressLane tolls work?

Tolls vary based on traffic—higher when demand is high, lower when it’s not. Carpools that meet the occupancy requirement and use a FasTrak Flex transponder may ride free. Solo drivers can pay to use the lanes.

How are toll revenues used?

Net toll revenues—what remains after operations and maintenance—are reinvested into the corridor. This includes support for bus service, equity-focused programs like the Low-Income Assistance Plan, and other local transportation improvements.

When could construction begin?

The environmental review is expected to conclude in 2026. If approved, construction could begin in 2029. Metro will continue to engage communities as the project advances.