Question: how much did the new tappan zee bridge cost
Answer: 0 km ) Width 183 ft ( 56 m ) , total of both decks : 87 ft ( 27 m ) and 96 ft ( 29 m ) Height 419 ft ( 128 m ) Longest span 1,200 ft ( 370 m ) Clearance above unlimited Clearance below 139 ft ( 42 m ) History Construction start 2013 Construction cost $3.9 billion ( 2013 project budget ) Opened August 26 , 2017 ( westbound span ) June 15 , 2018 ( project completion ) Replaces Tappan Zee Bridge ( 1955 -- 2017 ) Statistics Daily traffic 138,000 + ( 2011 est )