sentences:  It was completed the next year, when the Pennsylvania Department of Highways paved the highway from Herrick Center to Thompson and Stack Road to the Harmony Township line.These three routes remained intact (in terms of alignment) for eighteen years, until 1946, when PA 692 and PA 602 were removed from the state highway system in favor of extending PA 70 to the north to Hallstead.The route, PA 70, remained intact for another seventeen years, when in April 1961, I-70 was already commissioned, and PA 70 was decommissioned.