Pennsylvania Route 85 is a 24-mile-long (39 km) east–west state highway located in western Pennsylvania. The western terminus of the route is at Pennsylvania Route 28 and Pennsylvania Route 66 east of Kittanning. The eastern terminus is at U.S. Route 119 in Home.

Indiana County is a county in the Commonwealth of Pennsylvania. It is located in the west central part of Pennsylvania. As of the 2020 census, the population was 83,246. Its county seat is Indiana. Indiana County comprises the Indiana, PA Micropolitan Statistical Area, which is also included in the Pittsburgh-New Castle-Weirton, PA-WV-OH Combined Statistical Area. The county is part of the Southwest Pennsylvania region of the state.