SR 3015 begins in the borough of Paxtang, at Derry Street. The borough is just outside the city of Harrisburg. The intersection of SR 3015 and Derry Street is the center of Paxtang. While SR 3015 ends at this intersection, the road continues straight, going through a park, and ending at Paxton Street, near the Harrisburg Mall, a distance of about a mile. In Paxtang, the road is known as Paxtang Avenue. Once outside the borough limits, it becomes Progress Avenue, which it remains all the way to the northern terminus of SR 3015.