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Project Timeline

2012: The Metro Board certified the Final Environmental Impact Report (FEIR) certified for the Westside Subway Extension Project (Purple Line Extension), which identified the need for additional storage capacity at the Division 20 Maintenance and Storage Facility.

2017: Metro finalized an Initial Study/Mitigated Negative Declaration (IS/MND) for the Red/Purple Line Core Capacity Improvements project, the former name for the Division 20 Portal Widening and Turnback Facility Project.

Late 2017- 2018: To address design refinements, Metro conducted and completed an environmental review of the Division 20 Portal Widening and Turnback Facility Project.  In October 2018, the project’s Final Environmental Impact Report (FEIR) was approved by the Metro Board of Directors.

Late 2018 to Present: Preconstruction efforts underway including demolition of existing structure, environmental remediation, and site grading


Late 2018-Mid 2019



> Environmental Review and Clearance

> Project Design

Preconstruction Activities

Project Construction

Anticipation Project Completion

Public Involvement