Blue Line Harbor Tunnel Infrastructure Improvements
Timeline: 2019 – 2023
- Accelerated State of Good Repair Construction
- Phase I: May and August 2020
- Phase II: Spring 2022
- Long Wharf Emergency Egress
- 100% Design: Spring 2022
- Construction Start: Summer 2022
We’re upgrading the Blue Line between Airport and Aquarium stations to improve resiliency and travel time.
The harbor tunnel, which runs between Aquarium and Maverick stations, passes under Boston Harbor and is susceptible to flooding during storm surges. We’re making infrastructure upgrades to improve flood resilience and prevent water leaks and corrosion.
We’re also replacing the track between Airport and Maverick stations so we can lift a speed restriction and improve travel times.
Building a Better T
As part of our $9.6 billion, 5-year capital investment plan, we're renovating stations, modernizing fare collection systems, upgrading services for our buses, subways, and ferries, and improving the accessibility of the entire system.