Ogdensburg-Prescott International Bridge, New York

The Ogdensburg-Prescott International Bridge is the middle of  three bridges spanning the border along the St. Lawrence River. The bridge, more than a mile and half in length, was built in 1960. Also called the Seaway Skyway, the tall bridge offers views of the river, and the Seaway, and has a steel deck, so you can even see through it, to the water more than a hundred feet below.