Six people were working the night shift on the Francis Scott Key Bridge when it collapsed after being rammed by a cargo ship. The missing construction workers include men from El Salvador, Mexico and ...

At first glance, an I-beam looks flimsy compared to a solid chunk of steel — but its geometry is what makes it powerful. Most of the strength in a beam comes from how far the material is placed from ...

Key point: U.S. allies in Europe need to revamp their aged and weak bridges if they expect the U.S. to counter a Russian invasion. The U.S. Army and its closest allies have a problem. The region of ...