During their first unit in the school’s Discovery Lab, John Lewis Childs School fifth graders are learning about bridges. Working in groups, the students create truss bridges out of connector strips.

OF BUILDING BRIDGES REALLY ACROSS THE COUNTRY. YEAH. THAT’S RIGHT. ITS WEBSITE FEATURES BRIDGES THAT THE COMPANY HAS BUILT IN WASHINGTON, D.C., NEW JERSEY, CALIFORNIA, ALL ACROSS THE COUNTRY. THE ...

Like a spider web that flexes to compensate for a broken strand 1, 2, steel truss bridges, which are built from a framework of connected elements, can sometimes withstand the failure of a load-bearing ...

When the 1,200-foot-long Francis Scott Key Bridge opened in 1977, its enormous steel-truss design was the state of the art for river crossings. But in the decades since, a more modern design that has ...