What does $456 billion buy?

30 Big Digs

At almost $15 billion, Boston's Central Artery project has been held up as the nation's most expensive public works project. Now multiply that by 30 and you're getting close to US taxpayer’s commitment to democracy in Iraq… so far.

(At left, the central artery which was replaced by the Big Dig tunnels/Globe File Photo)

	30 Big Digs At almost $15 billion, Boston's Central Artery project has been held up as the nation's most expensive public works project. Now multiply that by 30 and you're getting close to US taxpayer’s commitment to democracy in Iraq… so far. (At left, the central artery which was replaced by the Big Dig tunnels/Globe File Photo)
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