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Cost Overruns Plague Boston's 'Big Dig' Massive cost overruns in the construction of Boston's "Big Dig" make the road and tunnel project billions of dollars more expensive than anticipated. Yet researchers say most big public works projects go well over budget. The lessons learned in Boston suggest ways to hold the line on costs while rebuilding postwar Iraq. NPR's Chris Arnold reports.

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Cost Overruns Plague Boston's 'Big Dig'

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Cost Overruns Plague Boston's 'Big Dig'

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Massive cost overruns in the construction of Boston's "Big Dig" make the road and tunnel project billions of dollars more expensive than anticipated. Yet researchers say most big public works projects go well over budget. The lessons learned in Boston suggest ways to hold the line on costs while rebuilding postwar Iraq. NPR's Chris Arnold reports.