 reaches its northern terminus at a trumpet interchange with the end of the US 222 freeway bypass of Reading, at which point Allentown Pike continues north as US 222.When Pennsylvania first legislated routes in 1911, the route heading southwest out of Reading toward Lancaster was legislated as Legislative Route 148 while the route heading from Reading northeast toward Allentown was legislated as Legislative Route 157.In 1916, the road between Reading and Allentown became a part of the William Penn Highway, an auto trail that ran from Pittsburgh to New York City.