The Amtrak Dock Vertical Lift bridge spans the Passaic River in Newark, NJ. Built in 1937, the bridge carries train traffic as part of the Northeast Corridor. It is still capable of raising to it's maximum clearance of 135 feet with prior notice of 24 hours, though it has not been raised since 2004. [Photo by Michael Hession]
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And this is the London Tower Bridge built in 1894. It's center span area is 237' and still raises and lowers to allow Thames river traffic to navigate. It's has a way cool museum inside and you can even rent out the upper span area for parties.