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In 2015, Caltrans completed a Project Study Report/ Project Development Support (PSR/PDS) for the I-105 corridor to assess potential improvements. The PSR/PDS identified four alternatives including a no build, conversion of the existing High Occupancy Vehicle (HOV) lane into ExpressLanes, and the addition of a second ExpressLane in each direction.

In January 2017, the ExpressLanes Strategic Plan was presented to the Metro Board. The Strategic Plan identified three tiers of ExpressLanes projects, with Tier 1 projects showing the highest potential benefits. Tier 1 projects include the I-105, sections of the I-405 and I-605, and extensions of the existing I-10 and I-110 ExpressLanes. The PSR/PDS and ExpressLanes Strategic Plan can be found in the Reports tab.

Next, Metro and Caltrans began the preparation of the Environmental Impact Report/Environmental Assessment to evaluate the environmental effects of this project pursuant to the California Environmental Quality Act (CEQA) and the National Environmental Policy Act (NEPA). As part of this effort, Metro hosted public scoping meetings along the corridor in March 2018 and updated community meetings in 2019 to share the latest on the proposed alternatives and project. All past meeting materials can be accessed under Past Meetings section on this webpage.

Current Conditions

The I-105 corridor experiences heavy demand during peak commute hours that exceeds the freeway’s capacity. Today, between 200,000-250,000 vehicles per day use I-105. Peak period speeds average 25 miles per hour or less in the General Purpose (GP) lanes. In addition, sections of the eastbound and westbound I-105 High-Occupancy Vehicle (HOV) lanes are classified as degraded as defined by federal standards. This means speeds on the HOV lanes are less than 45 miles per hour more than 10 percent of the time.

About Metro ExpressLanes

The Metro ExpressLanes Program was initiated as a one-year demonstration to assess the use of congestion pricing to ease traffic on LA County freeways. They were designed to improve traffic flow and provide motorists, including solo drivers, a more reliable travel option in LA County. ExpressLanes allow carpools, vanpools and buses to travel for free, while also providing single occupant vehicles the option to pay a toll to use the lane.

Tolls for vehicles that don’t qualify to travel for free are calculated based on traffic conditions and vary according to the level of congestion – tolls are higher when traffic congestion is heavier and lower when traffic is lighter. Currently, Metro operates ExpressLanes on I-110 and I-10 freeways in LA County. To learn more about Metro ExpressLanes, visit the website or click on the links below.