06/09/2026
Bridges are common in today’s modern world and are represented in a variety of different forms, styles, and materials. Humans have built small bridges since prehistoric times using natural materials such as stones and logs, eventually creating massive structures as seen in the Roman Empire.
Building complex bridges that can hold substantial amounts of weight is a mathematics-intensive project. The ancient Romans advanced bridge building by using geometry and physics to their advantage. By using arches, Romans harnessed natural forces to hold significant amounts of weight over larger spans. Ancient Romans used arches in their bridge design to create a complex road system throughout their territory as well as water systems to transport drinking water, wastewater, and water for transporting goods.
Humans have come a long way in bridge building since the Roman Empire, but the mathematical principles remain the same. Our engineers here at Delaware County DPW still use arches in our county bridge designs from time to time, as well as materials and tools that the Ancient Romans probably couldn’t have imagined.
Image shows the Alcántara Roman bridge.