Although the route is inventoried by the New York State Department of Transportation (NYSDOT) as NY 920P, the reference markers bear the number 862.

The route, named Riverside Drive, heads eastward along the Mohawk River, paralleling the New York State Thruway (I-90) and NY 5S to the south.

Past exit 28, the development along the highway slowly decreases in density as Riverside Drive heads through the town of Glen.

The Montgomery County Correctional Facility is located across from Riverside Drive on the south side of NY 5S.

[2] By 1978, the portion of Riverside Drive west of the interchange with the New York State Thruway was a short state highway maintained by NYSDOT; however, the remainder of the roadway east to NY 5S was maintained by Montgomery County as CR 119.