The ancient Via Flaminia, which crossed Umbria from Otricoli to Scheggia, was traced between 220 and 219 b.C. by the censor Caio Flaminio. It connected Rome to the Adriatic Sea, stretching beyond the Apennines. Bridges and sostructions crossed watercourses and the unevenness of the ground.

The several works that are still visible nowadays – some of which are still being used (bridges, sostructions, viaducts) – confirm the importance of this road and the difficulties faced in order to adapt it to the morphology of the ground, most of which was mountainous, subject to landslides and rich in watercourses.

The construction adopts the criteria that were normally used for military roads, whose main task was to reach the occupied areas in the shortest period of time and to maintain their control. When crossing villages – of which it represented the main axis – the road had been paved, and this is still visible in Otricoli and Carsulae.

The main villages of the region, not directly reached by the road, were linked to it through side lanes, as well as several transversal paths linked the Via Flaminia to the other important roads as Via Amerina.

Still nowadays, there are sections of Via Flaminia that are well kept, and for this reason the modern road system is often overlapping the ancient one, whereas only a few sections of the road are uncertain since they were involved in landslides or transformations of the ground.