It started with the gentle stroke of a pen, almost exactly 50 years ago. Across the country in the 1950s, highways were being pounded through cities, regardless of what stood in their way. In Philadelphia the 1950s highway explosion is evidenced by the Schuylkill Expressway, which marked "a huge planning and urban design mistake," said Dennis Pieprz, the president of Sasaki Associates, the firm designing Penn's eastward expansion.
