The new steel bridge was built onto a sliding track that is coated with Teflon so it can slowly slide the 102 feet into position.

The Francis Scott Key Bridge in Baltimore was built over the course of five years, beginning in 1972. For the workers involved, it meant overtime pay and a chance to prove themselves on a giant ...

THE BIG FOUR BRIDGE. A SHORT WALK ACROSS THE OHIO RIVER CONNECTING KENTUCKY AND INDIANA. BEFORE IT WAS A PEDESTRIAN BRIDGE, IT WAS A MAJOR RAILROAD. IN THIS WEEK’S ASK CARAY CARAY GRACE BREAKS DOWN ...

Soaring across the scenic landscape, it’s indisputably one of the most beautiful bridges in the world. Often swathed by mist, so that it feels like crossing through clouds, it is so famous that it has ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. How do they build things like tunnels and ...