U.S. Route 9 (US 9) is a north–south United States Numbered Highway in the states of Delaware, New Jersey, and New York in the Northeastern United States. It is one of only two U.S. Highways with a ferry connection ; the other is US 10. US 9 is signed east–west in Delaware and north–south on the rest of its route. The southern terminus of the route is in Laurel, Delaware, at an intersection of US 13, while the highway's northern terminus is at an interchange with I-87 in Champlain, New York, where the old roadway continues north as the unsigned New York State Route 971B (NY 971B), which ends in a cul-de-sac just short of the Canadian border.