[2] The road, maintained by the New York State Department of Transportation, is designated NY 980D, an unsigned reference route.

[3] The route crosses Interstate 90 (Massachusetts Turnpike) twice in its first two miles (3.2 km), where it is also known as State Line Road.

It joins Route 41 for a one-half-mile (0.80 km) concurrency through the center of West Stockbridge, crossing the Williams River south of Shaker Mill Pond.

It crosses the Mass Pike once more before intersecting Route 183 – which serves the Berkshire Botanical Garden and Norman Rockwell Museum – in the Larrywaug section of town.

After an at-grade railroad crossing with the Berkshire Subdivision, the route turns to the northeast before meeting its eastern terminus at the junction of US 20 (Houstatonic Street) and the entrance ramps to exit 10 of the Mass Pike.