 At this point, PA 48 heads northwest into the borough of Versailles, passing over CSX's Keystone Subdivision railroad line and becoming Walnut Street as it passes a mix of homes and businesses.The route crosses into the city of McKeesport and widens into a divided highway as it comes to an intersection with PA 148.Here, PA 148 continues along Walnut Street and PA 48 turns east onto four-lane undivided Long Run Road, passing through more residential and commercial areas.