National Geographic - Megastructures: Americas Biggest Dig

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National Geographic - Megastructures: Americas Biggest Dig

English | 00:47:05| 512x288 | XviD 1064Kbps | 25fps | MPEG Audio 128Kbps | 407MB
Genre:Documentary

Boston, Massachusetts had a world-class traffic problem, an elevated six-lane highway called the Central Artery that ran through the center of downtown. When it opened in 1959, the Central Artery comfortably carried about 75,000 vehicles a day. It has carried upwards of 200,000, quite uncomfortably, making it one of the most congested highways in the United States.

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