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Massachusetts Bay Transportation Authority (MBTA) Massachusetts Department of Transportation
Green Line Extension Green Line Extension
Construction Schedule
Phase 1
  

 

Phase 1 Project Description

Harvard Street, Medford
  • Continue Backfill of Southeast Retaining Wall and Detension Tiebacks, along Support of Excavation
    Thursday August 28 – Friday August 29
    Tuesday September 2 – Friday September 5
    Monday September 8 – Friday September 12
    Monday September 15 – Wednesday September 17
  • Commence Installation of Track Under Drain, along Support of Excavation
    Tuesday September 2 – Friday September 5
  • Commence Installation of AT&T Conduit, along Support of Excavation
    Monday September 8 – Friday September 12
  • Backfill of Northeast Retaining Wall Drainage Course, from Tufts Science & Tech
    Thursday August 28 – Friday August 29
  • Commence Backfill of Northeast Retaining Wall and Detension Tiebacks, along Support of Excavation
    Tuesday September 2 – Friday September 5
    Monday September 8 – Friday September 12
    Monday September 15 – Wednesday September 17
  • Continue Rodent Control Maintenance along Tracks
    Friday September 5

Work Done Requiring Lane Closure with Sidewalk Closure
  • Apply Bridge Deck Waterproofing at New Bridge
    Wednesday September 3 – Friday September 4
  • Commence Drainage Installation from Manhole 16 to Manhole 9
    Monday September 8 – Friday September 12
    Monday September 15 – Wednesday September 17

Water Street Site, Cambridge
  • Load out 21 Water Street Demolished Material
    Thursday August 28 – Friday August 29

Medford Street, Somerville
Medford St. Detour Details
  • Implement Full Road Closure for Steel Erection
    Wednesday September 10 – Friday September 12

Work Done Requiring Lane Closure with Sidewalk Closure
  • Retrofit Girder 5 and Girder 2 for New Steel and Remove & Replace Girder 2 Foot Beam Clips in Medford Street
    Monday September 8 – Wednesday September 10

Work Done Requiring Sidewalk Closure
  • Drill, Form, Reinforce and Place Abutment Seat Concrete along Sidewalk
    Thursday August 28 – Friday August 29
    Tuesday September 2 – Friday September 5
  • Install Bridge Bearings, along Sidewalk
    Wednesday September 3 – Friday September 5
  • Detail Bridge Steel in new Girder 6 Bay
    Monday September 15 – Wednesday September 17

Work Done Requiring Full Road and Sidewalk Closure
  • Erect Girder 5 to Girder 6 Deck Panels and Girder 6 Girder
    Saturday September 13 – Sunday September 14 – WEEKEND CLOSURE


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