The route winds through forested areas, running to the north of the Bennett Branch Sinnemahoning Creek and a Buffalo and Pittsburgh Railroad line.

PA 555 passes through Caledonia and heads through more wooded areas with occasional fields, crossing into Benezette Township and becomes an unnamed road, curving to the northeast.

[2][3] PA 555 enters Gibson Township in Cameron County and becomes Low Grade Road, passing through the community of Hicks Run before winding southeast through the Elk State Forest.

The route turns northeast and passes through Castle Garden before crossing into the borough of Driftwood and becoming Bridge Street.

Here, PA 555 runs through woodland with some homes, crossing the Sinnemahoning Creek and turning east-southeast onto Driftwood Avenue.