U.S. Route 9 (US 9) is a part of the United States Numbered Highway System that runs from Laurel, Delaware, to Champlain, New York. In New York, US 9 extends 324.72 miles (522.59 km) from the George Washington Bridge in Manhattan to an interchange with Interstate 87 (I-87) just south of the Canadian border in the town of Champlain. US 9 is the longest north–south U.S. Highway in New York. The portion of US 9 in New York accounts for more than half of the highway's total length.
The section of US 9 in New York passes through busy urban neighborhoods, suburban strips, and forested wilderness. It is known as Broadway in Upper Manhattan, the Bronx and much of Westchester County,[3] and uses parts of the old Albany Post Road in the Hudson Valley, where it passes the historic homes of a U.S. President (Franklin D. Roosevelt) and Gilded Age heir.[4] It passes through the downtown of Albany, the state capital,[5] as well as Saratoga Springs.[6] It penetrates into the deep recesses of the Adirondack Park and runs along the shore of Lake Champlain,[7] where it is part of the All-American Road known as the Lakes to Locks Passage.[8]
US 9 spawns more letter-suffixed state highways than any other route in New York, including the longest, 143-mile (230 km) New York State Route 9N (NY 9N).[9] Outside of the cities it passes through, it is a mostly a two-lane road, save for two freeway segments in the mid-Hudson region. For much of its southern half, it follows the Hudson River closely; in the north it tracks I-87 (Adirondack Northway).
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