sentences:  For most of its run on the island, I-81 runs along or close to the island's edge, permitting views of the river and some of the area's other islands.Not far from exit 52, an interchange linking the freeway to a paralleling local road, I-81 crosses the International Rift on a bridge connecting Wellesley Island in New York to Hill Island in Ontario, Canada.From here, the road continues north to Highway 401 as Highway 137.