 In Rensselaer County it widens again as it intersects I-90 and then joins US 20 to Albany, where it crosses the Hudson at the Dunn Memorial Bridge.It is a busy surface road through the state capital, becoming a strip in its northern suburbs, taking traffic eventually to Saratoga Springs and Lake George, at the edge of the Adirondack Park.The Adirondack section of US 9 is the least trafficked of the road, returning to two lanes as it runs through vast tracts of forested wilderness and occasional hamlets.