“In the past, masonry arch-type bridges were common,” he adds. “These heavy stone structures looked beautiful but eventually ...

A keystone is the wedge at the top of an arch upon which all the other components lean. Keystones are usually masonry in either cut stone, cast stone or brick. The key design feature is the last ...

These amazing feats of engineering allow trains to navigate the steepest valleys and cross the deepest rivers.

“In the past, masonry arch-type bridges were common,” he adds. Related Czechia, Spain, France: Where are railway networks growing the fastest in Europe? Europe’s former railway stations have ...