 The road shifts from state to county maintenance at the latter junction, and NY 320's right-of-way continues northeast from Tiffany Road as County Route 29 (CR 29).NY 320 was assigned as part of the 1930 renumbering of state highways in New York.NY 320 begins a half-mile (0.8 km) north of the Norwich city limits at an intersection with NY 12 in the town of Norwich.