Roads in Ancient Rome
So much of Western Europe was conquered by the Romans, that they needed roads to move their troops around quickly. Poorly built roads would not help with this.
A good road system also made it easier for the emperors to control their empire as messages and orders could be sent quickly.
The Roman roads were notable for their straightness, solid foundations, cambered surfaces facilitating drainage, and use of concrete made from pozzolana (volcanic ash) and lime. Though adapting their technique to materials locally available, the Roman engineers followed basically the same principles in building abroad as they had in Italy. The Roman road system spanned more than 400,000 km of roads, including over 80,500 km of paved roads. When Rome reached the height of its power, no fewer than 29 great military highways radiated from the city. Hills were cut through and deep ravines filled in.
At one point, the Roman Empire was divided into 113 provinces traversed by 372 great road links. In Gaul alone, no less than 21,000 km of road are said to have been improved, and in Britain at least 4,000 km. There were footpaths on each side of the road.
The bulk of the actual building was done by Roman soldiers. By doing this, the Romans could rely on the gained expertise of the soldiers. The authorities could also rely on the fact that the soldiers would do the best they could for Rome – by building excellent roads.
Roman roads were well used throughout the empire. However, many of those who used them had to walk – including merchants – as chariots and horses were expensive. A wealthy merchant could afford a wagon pulled by horses. The roads were built so that two of these wagons could pass on both sides of the roads.
When the Romans left Britain, the Britons did not use their roads. Not only were the roads not used, but villas, baths and other buildings were shunned by the Britons because of their association with the Romans. Also the Britons did not know how to keep the roads in good repair as they had not been used by them when the roads were built.
Regardless of this, Roman roads were so well made that they lasted for centuries.