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 that ...

The story of America’s interstates is usually told as a straightforward tale of postwar progress, but the real origins are stranger and more contested than the green signs suggest. The Dwight D.

There were roads across the United States before 1926, but they weren’t systematically named, numbered or otherwise organized. Instead, the country was crisscrossed by a series of loosely connected ...