Watch Modern Marvels Season 9 Episode 33 Online
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- COUNTRIES: United States of America
- Subtitles: English
The Massachusetts Central Artery/Tunnel Project, a.k.a. The Big Dig, is the most amazing municipal construction project in U.S. history. Its objective–to replace Boston’s decaying highway infrastructure with 160 new highway miles, half of which run underground and underwater. After 14 years construction, its cost–$11 billion!
