Memorial Bridge Portsmouth, New Hampshire, to Kittery, Maine: The nation’s first “vertical lift” bridge spans the Piscataqua River to connect the historic downtowns of Portsmouth and Kittery. The states of Maine and New Hampshire are considering replacing the structure, against the wishes of many residents. The bridge has a center span that rises vertically to a height of 170 feet to allow ships to pass underneath.
— 11 sites make new list of ‘endangered historic places’ - CNN.com
