The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, or the Eisenhower Interstate System, is a network of controlled-access hig
I‑55 under construction in Mississippi in May 1972
A 1957 aerial photograph showing a recently constructed interchange on I-5 in Glendale, California
A commemorative sign introduced in 1993. The system was established during Dwight D. Eisenhower's presidency, and the five stars commemorate his rank as General of the Army during World War II.
The fervor of urban renewal led to the routing of Interstate 81 through the middle of Syracuse's 15th ward in the 1960s. The viaduct is now slated for demolition.
The United States Numbered Highway System is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. As the designation and numbering of these hi
Interstate Highway System
…Aid Road Act of 1916, and started an effort to construct a national road grid with the passage of the Federal Aid Highway Act of 1921. In 1926, the United States Numbered Highway System was established, creating the first national road numbering system for cross-country travel. The roads were funded and maintained by U.S. states, and…
The "final" U.S. Highway plan as approved November 11, 1926
This sign, photographed in 1941 on US 99 between Seattle, Washington, and Portland, Oregon, illustrates one rationale for a federal highway system: national defense.