Cars drive across the nearly empty Zakim Bridge in Boston prior to a mandatory statewide driving ban, Friday, Feb. 8, 2013. Mass. Gov. Deval Patrick declared a state of emergency Friday and banned travel on roads as of 4 p.m. as a blizzard that could bring nearly 3 feet of snow to the region began to intensify. As the storm gains strength, it will bring &quot;extremely dangerous conditions&quot; with bands of snow dropping up to 2 to 3 inches per hour at the height of the blizzard, Patrick said. (AP Photo/Charles Krupa)
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