005.Memorial Bridge - Portsmouth
Memorial Bridge is a steel through-truss lift bridge that carries U.S. Route 1 from Portsmouth New Hampshire to Kittery, Maine, crossing the Piscataqua River not far from where it dumps into the Atlantic. Two fixed Warren trusses flank a center Warren Truss that is lifted every half-hour during the summer to allow river boat traffic through. The bridge was built between 1920 and 1923 and may soon be replaced or rehabilitated.
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