PHILADELPHIA 1970: This map from the University of Texas Library archives shows the Pennsylvania-New Jersey-Delaware arterial system from three decades ago. Important gaps in the system, such as I-95, I-295, I-476 and I-676, remain to be completed.
MAP 1: Pennsylvania-New Jersey-Delaware (514 K)

Philadelphia's Comprehensive Plan for Expressways In 1966, the Philadelphia City Planning Commission recommended construction of an expressway network for the city and immediate suburbs. Included were bypass routes to supplement radial routes such as the Schuylkill Expressway and the Delaware Expressway. (939 K)

DVPRC 1985 Adopted Freeway Plan In 1974, the Delaware Valley Regional Planning Commission mapped out a network of existing and proposed expressways throughout Philadelphia and its suburbs. Find out which expressways were left unbuilt. (945 K)

INTERSTATE HIGHWAY SYSTEM -- FACTS AND HISTORY:

• Proposals Leading to the Interstate System: Maps (1939-1958) (Bureau of Public Roads, courtesy Sandor Gulyas and Marc Fannin)
  
• Interstate Numbering Developments, State by State (American Association of State Highway Transportation Officials, courtesy Stephen Summers)
  
• Interstate Highway System History (Public Roads, Federal Highway Administration, 1996)
  
• Interstate Highway System Facts (Federal Highway Administration, 1998)
  

• Main Index
  
• Roads
  
• Crossings
  

• Main Index
  
• Roads
  
• Crossings
  

• Main Index
  
• Roads
  
• Crossings