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gptkbp:instance_of
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gptkb:project
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gptkbp:bfsLayer
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4
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gptkbp:bfsParent
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gptkb:The_Boston_Globe
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gptkbp:completed
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gptkb:2007
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gptkbp:controversy
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cost overruns
construction delays
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gptkbp:design
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by Bechtel/ Parsons Brinckerhoff
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gptkbp:educational_programs
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gptkb:Massachusetts_Turnpike_Authority
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gptkbp:environmental_impact
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improved air quality
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gptkbp:explores
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gptkb:Thomas_P._O'_Neill_Jr._Tunnel
gptkb:Callahan_Tunnel
gptkb:South_Station_Tunnel
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https://www.w3.org/2000/01/rdf-schema#label
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Big Dig project
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gptkbp:impact
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reduced traffic congestion
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gptkbp:includes
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gptkb:bridge
gptkb:park
tunnels
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gptkbp:launched
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gptkb:1991
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gptkbp:legacy
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gptkb:metropolitan_area
increased property values
environmental restoration
increased tourism
improved public transportation access
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gptkbp:length
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3.5 miles
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gptkbp:location
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gptkb:Boston,_Massachusetts
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gptkbp:parks
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gptkb:Rose_Kennedy_Greenway
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gptkbp:price
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$22 billion
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gptkbp:project
|
gptkb:Central_Artery/_Tunnel_Project
gptkb:Green_Line_Extension
gptkb:Silver_Line_Bus_Rapid_Transit
South Station Expansion
North Station Redevelopment
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gptkbp:public_perception
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mixed reviews
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gptkbp:purpose
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to reroute the Central Artery
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gptkbp:receives_funding_from
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federal and state funds
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gptkbp:safety_features
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ceiling collapse in 2006
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gptkbp:significance
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largest highway project in the U. S.
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gptkbp:technology
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soil stabilization
traffic management systems
lighting systems
emergency response systems
noise barriers
ventilation systems
tunnel boring machines
cut-and-cover construction
waterproofing systems
deep excavation
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