| gptkbp:instanceOf | gptkb:infrastructure 
 | 
                        
                            
                                | gptkbp:awards | gptkb:Outstanding_Civil_Engineering_Achievement_Award_(2004) 
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                                | gptkbp:completedIn | 2007 
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                                | gptkbp:cost | over $14 billion 
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                                | gptkbp:engineer | gptkb:Bechtel/Parsons_Brinckerhoff 
 | 
                        
                            
                                | gptkbp:environmentalImpact | created Rose Kennedy Greenway 
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                                | gptkbp:fundedBy | gptkb:Federal_Highway_Administration gptkb:Massachusetts_state_government
 
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                                | gptkbp:includes | gptkb:Rose_Kennedy_Greenway gptkb:Ted_Williams_Tunnel
 gptkb:Zakim_Bunker_Hill_Bridge
 
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                                | gptkbp:length | about 3.5 miles (5.6 km) 
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                                | gptkbp:location | gptkb:Boston,_Massachusetts,_USA 
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                                | gptkbp:notableFor | cost overruns engineering challenges
 delays
 fatal ceiling collapse in 2006
 tunnel leaks
 
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                                | gptkbp:notableProject | gptkb:Massachusetts_Turnpike_Authority 
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                                | gptkbp:officialName | gptkb:Central_Artery/Tunnel_Project 
 | 
                        
                            
                                | gptkbp:purpose | relocate the Central Artery (Interstate 93) underground 
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                                | gptkbp:replacedBy | elevated Central Artery 
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                                | gptkbp:startDate | 1991 
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                                | gptkbp:trafficCarried | gptkb:Interstate_93 gptkb:Massachusetts_Route_3
 gptkb:U.S._Route_1
 
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                                | gptkbp:bfsParent | gptkb:Maguire_Group gptkb:Peter_Kiewit_Sons',_Inc.
 
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                                | gptkbp:bfsLayer | 8 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Boston's Big Dig 
 |