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Orange Line Improvement Program

Updated on July 3, 2019

New orange line car being tested at Wellington

About the Project

2015 – 2021

As part of our $8 billion, 5-year capital investment program that began July 1, 2018, we're rebuilding the Orange Line.

This work, including new signal infrastructure, upgrades to our test track, and expanded maintenance facilities, will result in faster, more comfortable trips on the Orange Line, as well as less crowding on platforms and in stations. It will also support the all-new, expanded Orange Line fleet of 152 modern, spacious vehicles.

Contracts have been awarded for the following projects as part of this initiative:

  • Orange Line signal upgrades: Work scheduled to begin in 2019
  • New Orange Line vehicles: First vehicles scheduled to be put into service in summer 2019
  • Wellington Yard and Maintenance Facility updates: Work scheduled to begin in summer 2020

The following projects are now complete:

  • Rehabilitation of Orange Line test track: Completed summer 2018
  • Storage track expansions at Wellington Yard: Completed spring 2019

Orange Line Signal Upgrades

The train detection electronics and relays inside the signal bungalow at Forest Hills Station will be replaced.

The analog signal system on the Orange Line will be fully replaced with new, digital infrastructure.

 Contract awarded: November 2018
 Projected completion: May 2022
 Budget: $217 million (total value for Orange Line and Red Line signal upgrades)
 Status: Preliminary design is under review and development as of June 2019

New Orange Line Vehicles

Orange Line Production Car Delivery from Springfield, MA to the Wellington Car House (January 9, 2019)

The Orange Line fleet will be entirely replaced with modern, more efficient, more spacious vehicles by 2022.

 Contract awarded: 2014
 Projected completion: 2022
 Budget: $1 billion (total value for Orange Line and Red Line new vehicles)
 Status: The first vehicles are in testing, they’re scheduled to be put into service in summer 2019.

Wellington Yard and Maintenance Facility Updates

Orange Line train at Wellington

Wellington Yard, the facility where we store and care for Orange Line vehicles each day, will be updated for safer, more efficient maintenance.

Wellington Yard Rebuild

 Contract awarded: 2018
 Projected completion: Spring 2021
 Budget: $102 million
 Status: 11% complete as of June 2019

Wellington Maintenance Facility

​​​​​​​ Contract awarded: 2017
​​​​​​​ Projected completion: Spring 2021
​​​​​​​ Budget: $76 million
​​​​​​​ Status: 56% complete as of June 2019

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Contact Information

For all queries and comments related to Orange Line Improvement Program, please contact

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