New York State Route 343 (NY 343) is a state highway located entirely within central Dutchess County, in the Hudson Valley region of the U.S. state of New York. It runs east–west from the intersection of NY 82 in the village of Millbrook to the town of Amenia, where it crosses the Connecticut state line and continues eastward as Route 343, a Connecticut state highway located entirely within the town of Sharon. Along the way, it has a 7.3-mile (11.7 km) concurrency with NY 22 from vicinity of the hamlet of Dover Plains to the hamlet of Amenia.

New York State Route 82 (NY 82) is a state highway in the eastern Hudson Valley of New York in the United States. It begins at an junction with NY 52 northeast of the village of Fishkill, bends eastward towards Millbrook, and then returns westward to end at a junction with U.S. Route 9, NY 9H, and NY 23 at Bell Pond, near Claverack. NY 82 meets the Taconic State Parkway twice; it is the only state highway that has more than one exit with the parkway. The road spans two counties: Dutchess and Columbia.