Given the cost to construct some recent airport terminals, transportation and runway projects, $70 billion is not unrealistic, particularly since that figure is spread out among 50 airports.
Chicago officials are finalizing plans for an $8.5 billion expansion at O’Hare International Airport, where crews will renovate three existing terminals and replace another, increase plane parking space by 25%, make room for larger planes, replace 40 existing gates and add an extra 35.