 Farther southeast, the route runs through business areas and reaches its eastern terminus at the point it merges into eastbound US 422 at the eastern end of the West Shore Bypass freeway.When Pennsylvania first legislated routes in 1911, the route heading west from Reading toward Lebanon was designated as Legislative Route 149 and the route heading east from Reading toward Pottstown and Norristown was designated as Legislative Route 146.In 1916, the road between Reading and Harrisburg became a part of the William Penn Highway, an auto trail that ran from Pittsburgh to New York City.