 Outside of the cities it passes through, it is a mostly a two-lane road, save for two expressway 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 (the Adirondack Northway).The New York segment of US 9 can be divided into the section south of Albany, which parallels the Hudson River closely, and the portion north of Albany, which takes in a long section of the eastern Adirondacks.