'Big Dig' Tunnel Opens in Boston Boston drivers celebrate the opening of a major section of a 3.5-mile tunnel that connects major highways in the congested downtown, shaving time off many commutes. The "Big Dig" took a dozen years to construct at a cost of $6.5 billion. NPR's Robert Siegel talks with Rich Kirkland of Metro Network Shadow Broadcasting in Boston.

'Big Dig' Tunnel Opens in Boston

'Big Dig' Tunnel Opens in Boston

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Boston drivers celebrate the opening of a major section of a 3.5-mile tunnel that connects major highways in the congested downtown, shaving time off many commutes. The "Big Dig" took a dozen years to construct at a cost of $6.5 billion. NPR's Robert Siegel talks with Rich Kirkland of Metro Network Shadow Broadcasting in Boston.