"As part of the Capital Transformation Program, the Orange Line Transformation (OLT) is upgrading the 120-year-old rapid transit line serving the communities of Malden, Medford, Somerville, and Boston."
Involves:
Orange Line Signal Upgrades (Nov 2018-Fall 2023, unknown completion)
152 New Orange Line Vehicles (2014-2023, unknown/152 cars delivered, unknown/152 in service)
Wellington Yard and Vehicle Maintenance Facility Updates
Orange Line Traction Power Substation Upgrades (Spring 2015-Fall 2025, 78% complete)
Test Track Rehabilitation (complete)
Storage Track Expansion (complete)
Green Line Transformation
"As part of the Capital Transformation Program, the Green Line Transformation (GLT) is upgrading service on the T’s most popular light rail line."
Involves:
Green Line Train Protection System (Jan 2020-Jun 2025, unknown completion)
Hynes Station Accessibility Improvements (Spring 2020-Fall 2025, unknown completion)
Solar Powered E-Ink Signs (Spring 2022-Early 2024, 4 stops complete)
D Branch Station Accessibility Improvements (Design Feb 2020-Fall 2022, 30% completed, Brookline Hills complete)
Green Line Track Upgrades 2022 (complete)
Lechmere Viaduct Rehabilitation (complete)
D Branch Track and Signal Replacement (complete)
B Branch Station Consolidation (complete)
24 New Green Line Vehicles (complete)
Track and Intersection Upgrades (complete)
Fenway Portal Flood Protection (complete)
Green Line Extension (complete)
Commuter Rail Station Reconstruction
The MBTA is currently rebuilding some Commuter Rail stations on the North and South sides.
Involves:
Chelsea Station (move to SL3 Chelsea stop/rebuild) (complete)
