 In the 1970s, PA 75 was extended north to the new US 22/US 322 freeway on a road that was widened into a divided highway by 1990.PA 75 begins at the Maryland border in Montgomery Township, Franklin County, where the road continues south into that state as MD 494.From the state line, the route heads north on two-lane undivided Fort Loudon Road through open agricultural areas with occasional homes.