Um, How Old Are Our Bridges?

Photo: Getty Images
In July 1936, Robert Moses opened the Triborough; it's 71 years old. The Tappan Zee opened in December 1955, which means it's set to turn 52 this year. And the youngest, the Verrazano-Narrows opened on November 21, 1964, making it 42 years old. Of course, the Tappan Zee was reportedly designed to have only a 50-year life span. (Something to do with the Korean War and scarcity of materials and so on.) Now that it's on borrowed time, state officials are currently considering options for rebuilding or replacing it. One presumes they'll figure something out before the thing falls into the Hudson.
UPDATE: The Williamsburg Bridge! We forgot the Williamsburg bridge! It opened in December 1903, making it 106 years old, at least for the next few months, and the second-oldest on this list.
Related: Bridge Collapse in Minneapolis Kills at Least 7 [NYT]

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