Add Yahoo as a preferred source to see more of our stories on Google. End of Interstate 71 in Louisville, Kentucky. - Sixflashphoto/Wikimedia Commons The United States of America features the world's ...

The United States spent hundreds of billions of dollars on building out a cross-country Interstate highway system. Building the freeways has had the largest impact on American society since the ...

The Interstate Highway System transformed American mobility and economic growth by establishing a national backbone for transportation. Modern challenges require a similarly strategic approach to ...

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 United States of America features the world's longest road network, with the country's complex interstate system being the backbone that stitches all of its regions together into one coherent grid ...