[1] PR 33 begins south of the unincorporated community of Caddo in Stephens County, at a junction with US 180 and FM 717.

[2] The route travels to the north through Caddo before turning eastward after its intersection with FM 3253.

The highway turns to the northeast before entering Palo Pinto County and Possum Kingdom State Park.

While TxDOT does not indicate the actual date of construction, the road was most likely complete by 1950, when the park itself was opened to the public.

[1] Geographic data related to Texas Park Road 33 at OpenStreetMap