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.

Seventy years ago, on June 29, 1956, President Eisenhower signed the Federal-Aid Highway Act of 1956, aka the National Interstate and Defense Highways Act, into law. It created the Dwight D.

Ever wondered how the highway and interstate numbers came to be? What do they even mean if they mean anything at all? Behind those numbered shields displayed on the signs is a mathematical logic grid ...

It’s been called the 51st state, a perpetual motion machine, a journey with no end. It is the world’s largest public-works project. In a nation divided by geography and politics, the United States ...

Working in concert, the American Association of State Highway Officials and the Bureau of Public Roads adopted a uniform highway numbering system and corresponding map on November 11, 1926. The ...

Road enthusiasts, history buffs, and nostalgia fans are gearing up for the 100-year anniversary of historic Route 66 in 2026. About 345 miles of the historic 2,400-mile highway pass through Southern ...