Most bridges are forgotten almost as soon as they are crossed. A few seconds over a river, a glance through the window, and the journey continues. The longest bridges in the United States belong to a ...

When you see a natural bridge, it's almost hard to believe that it wasn't secretly human-made. Seemingly sculpted from canyons and made of long, slender rock suspended over space, natural bridges are ...

SALT LAKE CITY (AP) -- Utah state geologists and a group of intrepid volunteers say they've finally answered a nagging geological question: What's the longest natural arch in the world? The answer, ...

Long before concrete was used to build bridges across Texas’ lakes and rivers, road builders used stones. Today, only a few ...

Rainbow Natural Bridge surrounded by red rock landscape in Utah - Stephen Moehle/Shutterstock When you see a natural bridge, it's almost hard to believe that it wasn't secretly human-made. Seemingly ...