 At this point, PA 72 merges onto westbound US 322 and the two routes head north-northwest along a four-lane freeway, reaching an interchange with the southern terminus of PA 117.The road passes over the Lebanon Valley Rail Trail at this interchange.Past this, the freeway crosses into West Cornwall Township and PA 72 splits from US 322 at a partial interchange, heading north onto two-lane undivided Quentin Road into the Lebanon Valley.