The road begins on York Regional Road 25, and the current terminus is at Highway 407 ETR, and is expected to stretch to York Regional Road 68 later in 2008, forming the outline of the community Box Grove.
The road begins on York Regional Road 25 (Major Mackenzie Drive), and the current terminus is at a Parclo interchange with Highway 407 ETR. Portions of YRR48 are still under construction, extending it southward from Highway 407 to York Regional Road 69 later in 2008, forming the outline of the community Box Grove.