International BridgesThousand Island International Bridge.JPG

The Thousand Islands International Bridge, is the first international span within the boundaries of Leeds Grenville. It connects Ontario with the United States and spans one of the most scenic areas of the St. Lawrence River and the 1000 Islands region. It is not just one bridge but a series of bridges linking to Hill Island (Canadian) to Wellesley Island (USA) and finally the United States mainland and Interstate 81.

On the Canadian side, the bridge links to Highway 137 and Highway 401 as well the Thousand Islands Parkway. It was constructed in 1937 with additions made in 1959. It is operated by the Thousand Islands Bridge Authority.

Thousand Islands International Bridge & Prescott-Ogdensburg International Bridge

Leeds Grenville has the unique attribute of having two international bridges linking the region to the United States. The Prescott-Ogdensburg International Bridge, also called the Seaway Skyway, connects Johnstown, Ontario, to Ogdensburg, New York State. It has a span of 350.75 metres (1,151 feet) across the St. Lawrence River. It was designed by Modjeski and Masters and was completed in 1960. On the north shore the bridge connects with Highway 16, which quickly connects with Highway 401 and Highway 416.

International Bridge Johnstown




Above photo of Prescott-Ogdensburg International Bridge

Helpful links:

For information on border wait times

Thousand Island International Bridge

Prescott-Ogdensburg International Bridge (includes toll rates, etc.)

Thousand Island International Bridge toll rates

NEXUS and FAST Programs