When I was planning my archaeological trip to Sardinia I discovered, thanks to vici.org (an Archaeological Atlas of Antiquity I have mentioned here before), that there were many Roman bridges still standing all across the country. Some are left abandoned and almost completely covered with vegetation but others are perfectly preserved. Ancient Roman bridges are an exceptional feat of Roman construction and, as I said before, I hold a certain fascination for these impressive ancient structures. I previously wrote about the Roman bridges I saw in Portugal here and in Southern France here.
When the Romans began their conquest of Sardinia in 238 BC, there was already a road network built by the Punic who had inhabited the island since around 550 BC. However the Punic road network was only linking the coastal towns, leaving out the interior of the island completely. The Romans built four major roads (viae principales): two along the coasts and two inland, all with north-south direction. The road network, initially built for military reasons, was then maintained and restored continuously for economic reasons.