2,000 Years of Roman Bridge Engineering and It Still Works

Over 2,000 years ago, the Romans faced an impossible engineering challenge: building massive stone bridges in the middle of raging rivers with muddy beds. To solve this, they invented the cofferdam, a watertight enclosure made of wooden piles and clay that allowed them to literally pump out the river and work on dry ground. By transferring the immense load to stable layers deep below, they constructed enormous stone arches capable of withstanding intense floods. Discover the ancient structural secret that allowed the Romans to conquer rivers and build masterpieces that still stand today.