Highways were “as necessary to defense as they are to our national economy and personal safety,” President Dwight D.

Stretching over 46,876 miles, the United States Interstate Highway System connects nearly every corner of the nation, but behind the asphalt and interchanges lies a web of ambitions, controversies, ...

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.

As the United States marks its 250th anniversary, WTOP presents “250 Years of America,” a multipart series examining the innovations, breakthroughs and pivotal moments that have shaped the nation ...

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 ...

The interstate highway system transformed the U.S. economy and American life in the 20th century. High-speed rail can have a similar effect in the 21st century, reindustrializing and reconnecting ...