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Old 04-28-2016, 12:32 AM
snfaulkner snfaulkner is online now
Join Date: May 2015
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Posts: 5,561
Originally Posted by davidm View Post
If the Great Wall is considered a single object then why not the US highway system?

Dwight D. Eisenhower National System of Interstate and Defense Highways

The initial cost estimate for the system was $25 billion over 12 years; it ended up costing $114 billion (adjusted for inflation, $425 billion in 2006 dollars[5]) and took 35 years.[25]