areas with some residential and commercial development. Development increases as the road passes through Bonny Brook and becomes the border between the borough of Carlisle to the west and South Middleton Township to the east a short distance later, becoming South Hanover Street. The route widens into a four-lane divided highway and fully enters Carlisle as it interchanges with I-81 in a commercial area. Past this interchange, PA 34 becomes a four-lane undivided road and passes several homes. The route heads into the commercial downtown of Carlisle and comes to an intersection with US 11/PA 74/PA 641. At this point, US 11 turns north to join PA 34 on North Hanover Street, narrowing to two lanes and turning northeast past more homes and businesses. At a crossing of Norfolk Southern's Shippensburg Secondary, PA 34 splits from US 11 by turning north onto Carlisle Springs Road and passes through industrial areas before running past residential neighborhoods, heading to the west of the Carlisle Fairgrounds. The route crosses into North Middleton Township and passes under I-76 (Pennsylvania Turnpike), becoming Spring Road and curving northeast past a few businesses. The road turns to the north again and runs through residential areas with a few businesses, crossing the Conodoguinet Creek and turning northeast past more development. PA 34 heads into Middlesex Township and runs through more rural areas of homes, coming to an intersection with PA 944. At this point, PA 944 joins PA 34, passing through the community of Carlisle Springs, where PA 944 turns to the east. PA 34 runs northeast through open farmland before entering wooded areas of homes, at which point the route ascends forested Blue Mountain. At the summit of the mountain, the route passes through Sterretts Gap and comes to a roundabout with Sunnyside Drive and Mountain Road, where it turns northwest. Perry County PA 34 heads into Carroll Township in Perry County, where it descends Blue Mountain and passes a few homes. The road turns north and crosses Little Mountain before coming into a mix of farms and woods with some residential and commercial development. The route curves to the northwest and reaches an intersection with PA 850 in Shermans Dale. At this junction, PA 850 turns northwest to join PA 34, and the road continues past a few businesses before crossing Sherman Creek and passing a mix of farmland and residences as it runs to the