This map was apparently part of a major lobbying effort to secure funding from the Congress to complete the Interstate Highway System. Show more The highway system, adopted by Congress in 1956, was a ...

At first glance, the U.S. Interstate Highway system might seem like a logical grid-based masterpiece with a semblance of order behind its numbering system. Odd-numbered interstates run from north to ...

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.