Future Options for the National System of Interstate and Defense Highways

The objective of NCHRP Project 20-24(52) was to develop a potential vision for the future of the U.S. Interstate Highway System. This project Summary Report is based on a 10-task program-of-work carried out by the study team. The Interstate Highway System has been a key enabler of the Nation’s economic growth since construction began in 1956. At that time, there were 65 million vehicles generating 600 billion annual vehicle miles of travel (VMT). Vehicle ownership had just resumed its strong growth after World War II, and long-distance trucking was still in its infancy. Today, by contrast, there are over 240 million vehicles generating 3 trillion VMT on a network little changed since its original conception over fifty years ago, and the Interstate System itself carries over 700 billion annual VMT, more than the entire road system when it was authorized in 1956. This Summary Report is organized as follows: Chapter 1 presents a discussion of past versus future role of the Interstate and the major national surface transportation issues and their implications for the future Interstate; Chapter 2 presents the objectives-driven performance approach used to identify future Interstate Needs; Chapter 3 describes key strategies used in developing the future interstate vision; Chapter 4 presents a total vision for the future Interstate; Chapter 5 suggests a process for a cooperative development of the Next Interstate concept; and Chapter 6 presents a summary vision.


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Summary Report
  • Features: Figures; Tables;
  • Pagination: 59p

Subject/Index Terms

Filing Info

  • Accession Number: 01673767
  • Record Type: Publication
  • Report/Paper Numbers: NCHRP Project 20-24, Task 52
  • Files: TRIS
  • Created Date: Jun 13 2018 11:24AM