- Western Terminus:
- Haviland Hollow Road (Putnam CR 68) at the New York-Connecticut state line
- Eastern Terminus:
- Sherman-New Fairfield Road (CT 37) in New Fairfield
- 0.18 miles
Patterson Road is a short extension of Haviland Hollow Road (Putnam CR 68) into Connecticut. It is a two-lane undivided road and ends after less than a quarter of a mile at Sherman-New Fairfield Road (CT 37) in New Fairfield.