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Boston's Troubled Tunnels Photos

Emergency personnel work at the scene of a ceiling collapse in the Interstate 90 eastbound tunnel through Boston that crushed a car, rear, killing a woman passenger, Tuesday, July 11, 2006. At least 12 tons of concrete fell from the ceiling of the tunnel, raising concerns about the integrity of the massive highway project that is the central artery through the city.

(Photo: AP Photo/Michael Dwyer)