High Quality Content by WIKIPEDIA articles! New York State Route 278 (NY 278) is a state highway in Rensselaer County, New York, United States. The route, 1.51 miles (2.43 km) in length, is located entirely in the town of Brunswick. It climbs uphill from a southern terminus at NY 2 in the hamlet of Clums Corners to its northern end at NY 7.