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Government Center Station Reconstruction Project Green Line / Blue Line Public Meeting. February 12, 2010. December, 2012. Project Purpose. Accessibility - AAB - 521 CMR Compliance Modernized, Customer-Friendly Station New Station Entrance and Lobbies Redundant Elevators

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government center station reconstruction project green line blue line public meeting

Government Center StationReconstruction ProjectGreen Line / Blue LinePublic Meeting

February 12, 2010

December, 2012

project purpose
Project Purpose
  • Accessibility - AAB - 521 CMR Compliance
  • Modernized, Customer-Friendly Station
  • New Station Entrance and Lobbies
  • Redundant Elevators
  • Upgrade to Current Code Requirements
  • Complete Electrical System Replacement
  • New Station Platforms
  • Improved Lighting
  • New Fare Gates
  • Station Entrance that ties into City Hall Plaza
project schedule
Project Schedule

2009 – BRA Conceptual Design Approval

2012 – Final Design and Bidding

2013 – Begin Construction and Station Closure

* 24 month Station Closure & Subway By-pass *

2015 – Anticipated Re-Opening

stakeholder and public outreach
Stakeholder and Public Outreach
  • CITY OF BOSTON
  • Boston Redevelopment Authority
  • Property Management
  • Commission for Person with Disabilities
  • Boston Landmarks Commission
  • Public Works Dept.
  • Boston Transportation Dept.
  • Boston Water and Sewer Commission
  • Public Improvements Commission
  • Mayor’s Office
  • Parks and Recreation Dept.
  • Street Lighting
  • OTHERS
  • General Services Admin
  • Federal Transit Admin
  • Mass DOT
  • Mass Historical Commission
  • Area Business Groups
  • Project Abutters
  • Private Utilities
  • Architectural Access Board

MBTA

  • System-wide Accessibility
  • Green Line and Blue Line Operations
  • Security
  • Safety
  • Signals
  • Communications
  • Engineering & Maintenance
  • Real Estate Management
  • Environmental
  • Design & Construction
  • Advertising
  • Track
  • Electrical Systems and Maintenance
  • Traction Power
  • Quality Control

PLANNED

  • Public Information Meeting October 2012
project site existing
Project Site – Existing

Cambridge Street

Court Street

Station Entrance

JFK Federal Building

City Hall Plaza

Boston City Hall

slide10

Proposed Site Plan

Cambridge Street

Proposed Entrance

Emergency Egress - Only Headhouse

JFK```

Project Limits

Accessible Routes

City Hall

proposed accessible routes
Proposed Accessible Routes

Cambridge Street

Proposed Entrance

Emergency Egress - Only Headhouse

Accessible Routes

headhouse plan
Headhouse Plan

Six Entrances with Automatic Sliding Doors

Fare Collection

Redundant Elevators

Accessible Restroom

Glass Element with Stairs and Escalators

headhouse station cross section
Headhouse/Station Cross Section

Surface

To

Green Line

Elevs.

Green Line to Haymarket

Green Line “Brattle Loop”

proposed head house interior
Proposed Head House - Interior

Redundant Elevators

Solid Stair Risers Perforated for Safety and Visibility

green line station plan
Green Line Station Plan
  • SCOPE OF WORK
  • Raise Entire Station Floor 8-inches
  • Install Redundant Elevators
  • Construct Rescue Assistance Enclosure
  • Replace all Escalators
  • Replace Stairs to Surface
  • Reconstruct Stairs to Blue Line
  • Replace Electrical Substation
  • Replace Electrical Room

Redundant Elevators

to Surface

Rescue Assistance Enclosure

Electrical Substation

Redundant Elevators

to Blue Line

green line station track clearance improvements
Green Line StationTrack Clearance Improvements

Existing Platform:

About 3-feet Wide

Proposed Platform: About 10-feet Wide with Tactile Warnings

blue line station plan
Blue Line Station Plan

Construct Area of Rescue Assistance and Stairs for Emergency-Only Egress

Replace Escalator & Vendor Space

Construct Redundant Elevators to Green Line

Move Stairs

blue line emergency egress
Blue Line Emergency Egress

Blue Line Emergency–only Egress (looking towards Tremont St)

Blue Line Emergency–only Egress (from Cambridge Street)

construction phasing
Construction Phasing

Criteria:

Minimize Operational Disruptions

Maintain Public and Worker Safety

Minimize Risks of Delays

Maximize Quality of Workmanship

Value Engineering Recommendation:

Station Closure & By-pass

construction phasing1
Construction Phasing

Phase 1

Phase 2

Phases 3&4

Station Open Alternative (Not Selected)

- Construct and Maintain Temp. Headhouse

- Increased Cost

- Longer Schedule

- Mainly Nightwork

- Increased Passenger Safety Risks

- Increased Service Disruptions

- Required Minimum 32+ Weekend Diversions

- Required Frequent Changes to Accessible Routes

- Required Frequent Changes to Boarding Areas

construction phasing2
Construction Phasing

Station Closure and By-pass Alternative

(Selected Option)

Advantages:

  • Safer Operations & Construction
  • Reduced Travel Impacts
  • Reduced Project Schedule
  • Simpler Surface Work
  • Easier Trip Planning

Disadvantages:

  • Longer walk for some users
  • Additional transfer time