Old Albany Post Road - Credit: Wikimedia Commons
Old Albany Post Road is a dirt road in Philipstown, New York, one of the oldest unpaved roads still in use in the United States. It runs mostly north-south through the southeastern corner of the town, near the Putnam Valley town line. Starting from an intersection with Sprout Brook Road at Continental Village just north of the Putnam-Westchester county line, it ends at an oblique junction with US 9 east of Garrison. Read more on Wikipedia
Source: en.wikipedia.org