Since the Interstate highway system was created from whole cloth, rather than emerging through the years, it shouldn’t come as a surprise that there is a defined logic to the numbering system ...

The first official topographic map of the United States, it included 78,000 ... who would finally kick-start the interstate system. With the Federal-Aid Highway Acts of 1954, 1956, 1958, and ...

At first glance, the U.S. Interstate Highway ... system, with both using numbers ending in zero for major and transcontinental routes. However, there's an important difference between the systems ...