U.S. Federal Route 422 is an east-west highway in Southern Montgomery County. It runs in two sections within Montgomery County. The western section runs from the Berks/Montgomery County Line, near Stowe, to the Chester/Montgomery County Line, near Stowe. After briefly passing into Chester County, south of Pottsville, U.S. Rt. 422 reenters Montgomery County, near Kenilworth, to the Chester/Montgomery County Line, near Valley Forge. In the western section of U.S. Rt. 422 in Montgomery County, it does not pass through any towns, or intersects any highways. The info below is for the eastern section of U.S. Rt. 422 in Montgomery County. U.S. Rt. 422 passes through the following towns in Montgomery County. Sanatoga Ashford Green Abbey Downs Arcola U.S. Rt. 422 is not multi-plexed in Montgomery County. U.S. Rt. 422 intersects the following highways in Montgomery County. Pennsylvania State Route 29, near Yerkes. Pennsylvania State Route 363, near Audubon. Pennsylvania State Route 23, near King of Prussia.