Pennsylvania State Route 251 is an east-west highway in Western Pennsylvania. It runs commpletely within Beaver County. PA St Rt 251 runs from PA St Rt 18, in Beaver Falls, to the Pennsylvania/Ohio State Line, southeast of Neagly, Ohio. PA St Rt 251 passes through the following town in Beaver County. Beaver Falls PA St Rt 231 is not multi-plexed in Beaver County. PA St Rt 231 crosses the following highways in Beaver County. Pennsylvania State Route 168, near Beaver Falls. Pennsylvania State Route 51, at Beaver Falls. Interstate 376, at Beaver Falls. (NO Interchange) Pennsylvania State Route 18, at Beaver Falls.
