27th largest expansion bridge in North America. Spans St. Lawrence River between New York and Canada. Accessible from Prescott, Canada and Ogdensburg. The Ogdensburg–Prescott International Bridge (also known as the St. Lawrence Bridge and the Seaway Skyway),connects Ogdensburg, New York in the United States and Johnstown, Ontario (a few kilometres east of Prescott) in Canada. The bridge is owned and operated by the Ogdensburg Bridge and Port Authority.