sentences:  Both roads head across relatively undeveloped areas along the eastern riverbank to the outskirts of Binghamton, where I-81 merges with New York State Route 17 (NY 17) (Future I-86) in an industrial area east of the city.I-81 and NY 17 overlap for , running along the northern edge of the Binghamton suburbs before entering the city itself.About north of downtown, the freeway connects to Brandywine Highway, a limited-access road carrying NY 7 through mostly residential areas on the north side of the city.