Via Flaminia

History

It was constructed by Gaius Flaminius during his censorship, around 220 BC. Sources mention frequent improvements being made to it during the imperial period. Augustus instituted a general restoration of the roads of Italy, assigning supervision of different regions to various senators. He reserved the Flaminia for himself, and rebuilt all the bridges except the Pons Mulvius, by which it crosses the Tiber, 3 kilometres (2 miles) north of Rome (built by Marcus Aemilius Scaurus in 109 BC), and an unknown Pons Minucius. Triumphal arches were erected in his honour on the former bridge and at Ariminum, the latter of which is still preserved. Vespasian constructed a new tunnel through the pass of Intercisa (Furlo), in AD 77, and Trajan, as inscriptions show, repaired several bridges along the road.

During the period of Roman expansion in the 3rd and 2nd centuries BC, the Flaminia became, with the sea route, a main axis of transportation by which wheat from the Po Valley supplied Rome and central Italy. A number of major battles were fought on or near the Via Flaminia, for example at Sentinum (near the modern Sassoferrato) and near Tadinum (the modern Gualdo Tadino). Constantine the Great's famous Battle of the Milvian Bridge also occurred on the road, after his nearby dream of the Chi Rho (which led to his conversion and that of the Roman Empire to Christianity).

In late antiquity the Via Flaminia remained Rome's major artery both to the Adriatic and to Italy north of the Apennines. The Itinerarium Burdigalense and the Priscillianists who had been expelled from their sees both took this route to Rome despite its length. …

Construction features

The construction features of the Via Flaminia match those of other major Roman roads. The route was designed to be mostly straight, and the roadbed was wide enough for two carts to pass at the same time, no less than 3.9 metres (13 ft) to 4.1 metres (13 ft) along the Umbrian stretch, which was standard for main roads.

Within settlements, where it formed the main axis, the road was paved, often repaired and adjusted over time; remains are still visible, for example, at Otricoli and Carsulae. In rural areas, it likely did not have full stone paving but a gravel surface, which still ensured durability and easier maintenance. It is unclear whether purpose-built sidewalks were present outside urban areas, unlike in towns.

Ancient route

The Via Flaminia began at the Porta Fontinalis, a gate in the Servian Wall in ancient Rome, on the northern slope of the Capitoline Hill. It followed the Via Lata from the Campidoglio to the Porta Flaminia, a city gate of the Aurelian Walls, and the Piazzale Flaminio. This portion can be considered the urban stretch of the Via Flaminia. The road then crosses the Tiber at the Ponte Milvio. While the Via Cassia split off north, the Via Flaminia veared east before turning north again to follow the Tiber, and continued on to Saxa Rubra and Prima Porta. On a hill to the right of the Via Flaminia, a little beyond Prima Porta, are the ruins of Ad Gallinas, a villa that belonged to Livia, the wife of Augustus.

From there it made its way to Ocriculum (Otricoli) and Narnia (Narni), where it crossed the Nera River by the Ponte d'Augusto, the largest Roman bridge ever built, a splendid four-arched structure to which Martial alludes, one arch of which is still standing. It went on, followed at first by the modern road to Casuentum (San Gemini) which passes over two finely preserved ancient bridges, through Carsulae to the Vicus Martis Tudertium (near modern Massa Martana), then Mevania (Bevagna), and thence to Forum Flaminii (S. Giovanni Profiamma). Later, a more circuitous route from Narnia to Forum Flaminii was adopted, increasing the distance by 12 Roman miles (18 km) and passing by Interamna Nahars (Terni), Spoletium (Spoleto) and Fulginium (Foligno) from which a branch diverged to Perusia (Perugia). …

Remains

Retaining walls: supported the road along the hillside up to Narni, including the example at Le Grazie, which still supports the modern state road;

Bridge of Augustus: one of the largest structures along the route, crossed the Nera as the road descends into the narrow valley;

Bridge substructure at Valle Petrosa: in the area of Acquasparta, a surviving section built in polygonal masonry, whose construction method, different from other structures along the route, likely reflects the original design of the 3rd century BC, when the Flaminia was first laid out.

Ponte Fonnaia near Acquasparta

Square-cut stone bridge: once crossed a stream later diverted from its original course, with the 15th-century church of San Giovanni de' Butris and its rectory partly built on its remains.

Church of Santa Maria in Pantano: incorporates most of the surviving remains of the public buildings of Vicus Martis, which the road reaches after a short stretch with a few rural settlements. Beyond Massa Martana, the route becomes less clear.

Ponte del Diavolo: a surviving bridge near Osteria del Bastardo.

Decumanus maximus of Mevania: was formed by the Via Flaminia, which crossed the city; the original street grid is still preserved. At the edges of the settlement stood many funerary monuments, likely belonging to prominent local figures, placed along the road as visible markers for travelers.

Along the eastern branch:

Although the route can still be traced, only limited archaeological remains survive, mainly in the area of Spoleto.

Ponte Sanguinario: rebuilt during the Augustan period, its remains stand outside Spoleto's northern gate; …