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Metro is making strides to improve travel between the San Fernando Valley, the Westside of Los Angeles, and the Los Angeles International Airport (LAX). Bisecting the Santa Monica Mountains, the I-405 Freeway is ranked as one of the most traveled urban highways in the nation. The section through Sepulveda Pass accommodates approximately 300,000 vehicles per day and, according to the Federal Highway Administration, that number is expected to grow by nearly 50 percent to 447,000 by 2025.

Metro is conducting a Feasibility Study (Study) to identify and evaluate a range of high-capacity transit concepts to serve this congested I-405 corridor with possible connections to the Metro Orange Line , the Metro Purple Line, the Metro Expo Line, and LAX. A number of alignments and station locations will be considered for various transit modes, including light rail and subway. The Study is expected to take 20 months to complete.

The Sepulveda Transit Corridor is part of the Measure M expenditure plan, broken down into three Phases, with approximately $9.7 billion in total funding. Phase 1, with $260 million in funding, includes implementation of ExpressLanes on the I-405 between the US 101 and I-10 with an opening date of Fiscal Year (FY) 2026. Phase 2, with approximately $5.7 billion in funding, includes a fixed-guideway transit service between the San Fernando Valley and the Westwood area of Los Angeles, with an opening year of FY 2033. Phase 3, with approximately $3.8 billion in funding, involves extending the Phase 2 project southward to Los Angeles International Airport (LAX), with an opening year of FY 2057. The purpose of this Study is to evaluate transit options for Phases 2 and 3 only.

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