The bridge is over 3,000 years old, was originally built to carry chariots, and astonishingly, it remains in use today.

Humans have been building walls, bridges, and other structures without any steel or mortar reinforcement for a long time. A team led by Holcim has put a 3D-printed spin on the idea, and hopes to use ...

When have three bridges opened to let another bridge pass underneath them? It happened in New Jersey Wednesday afternoon, when the first of three giant steel arch bridge sections fabricated in upstate ...