The Taconic State Parkway is a 104.12-mile (167.56 km) limited-access parkway between Kensico Dam and Chatham, the longest in the U.S. state of New York. It follows a generally north–south route midway between the Hudson River and the Connecticut and Massachusetts state lines, much of its upper section along the westernmost flank of the Taconic Mountains. It is open only to passenger vehicles, as with other parkways in New York, and maintained by the state Department of Transportation (NYSDOT), the fourth agency to have that responsibility.