The gap in the highway, and thus PA 60, between West Mayfield and New Castle went unfilled for almost a decade. On October 20, 1989, ground was broken on a bridge over the Mahoning River in Lawrence County, marking the start of a $260 million project to complete the missing link in the freeway. The highway, built by the Pennsylvania Turnpike Commission as a toll road, opened to traffic on November 20, 1992. Meanwhile, ground was broken August 27, 1990, on the Southern Expressway, a $190 million, highway built to serve a new terminal at Pittsburgh International Airport. The new highway began at the Beaver Valley Expressway northwest of the airport and followed the western and southern edges of the airport to meet the Penn-Lincoln Parkway in Robinson Township. It was opened to traffic as the Airport Expressway on September 9, 1992. PA 60 was realigned to follow the new highway around the southwestern edge of the airport while its former routing around the northeastern edge became PA 60 Business.