One of the most famous Roman bridges is the Pont du Gard aqueduct in France, which was built in the 1st century AD. This bridge is part of a 50-kilometer-long aqueduct that carried water from a remote spring to the Roman city of Nîmes. The Pont du Gard consists of three tiers of arches, with the tallest tier reaching a height of almost 50 meters.
Another example of a Roman bridge is the Trajan's Bridge over the Danube river, which was built in the 2nd century AD. This bridge was over 1,100 meters long and consisted of 20 stone piers supporting 30 arches. It was considered a remarkable feat of engineering and one of the greatest achievements of the Roman Empire.
The Romans also built several bridges in Britain, including London Bridge, which was constructed in the 1st century AD. Additionally, they built military bridges across rivers as part of their campaigns and conquests. Overall, the Romans made significant contributions to the art of bridge building, leaving behind numerous iconic and enduring structures that still stand today.