The main part of the Appian Way was started and completed in 312 BC. The road began as a leveled dirt path on which small stones and
mortar were laid. This base was covered with gravel, and finally topped with tightly fitting, interlocking stones to create a flat and durable surface. The historian Procopius remarked that the stones fit together so securely and precisely that they appeared to have grown together rather than been set by hand. The road was cambered in the middle to allow for water runoff and flanked by ditches on either side, which were protected by retaining walls.
Between Rome and Lake Albano The road began in the
Forum Romanum, passed through the
Servian Wall at the
porta Capena, went through a cutting in the clivus Martis, and left the city. For this stretch of the road, the builders used the Via Latina. The building of the
Aurelian Wall centuries later required the placing of another gate, the
Porta Appia. Outside of Rome the new Via Appia went through well-to-do suburbs along the Via Norba, the ancient track to the
Alban Hills, where
Norba was situated. The road at the time was a via glarea, a gravel road. The Romans built a high-quality road, with layers of cemented stone over a layer of small stones, cambered, drainage ditches on either side, low retaining walls on sunken portions, and dirt pathways for sidewalks. The Via Appia is believed to have been the first Roman road to feature the use of lime cement. The materials were volcanic rock. The surface was said to have been so smooth that you could not distinguish the joints. The Roman section still exists and is lined with monuments of all periods, although the cement has eroded out of the joints, leaving a very rough surface.
Across the marsh The road concedes nothing to the
Alban Hills, but goes straight through them over cuts and fills. The gradients are steep. Then it enters the former Pontine Marshes. A stone causeway of about led across stagnant and foul-smelling pools blocked from the sea by sand dunes. Appius Claudius planned to drain the marsh, taking up earlier attempts, but he failed. The causeway and its bridges subsequently needed constant repair. In 162 BC, Marcus Cornelius Cathegus had a canal constructed along the road to relieve the traffic and provide an alternative when the road was being repaired. Romans preferred using the canal.
Along the coast The Via Appia picked up the coastal road at
Tarracina (Terracina). However, the Romans straightened it somewhat with cuttings, which form cliffs today. From there the road swerved north to Capua, where, for the time being, it ended. The
Caudine Forks were not far to the north. The itinerary was
Aricia (Ariccia),
Tres Tabernae,
Forum Appii, Tarracina,
Fundi (Fondi),
Formiae (Formia),
Minturnae (Minturno),
Suessa,
Casilinum and Capua, but some of these were colonies added after the Samnite Wars. The length of the Appian Way from Rome to Capua was 132
Roman miles () and from Capua to
Brindisi (244 BC) it was 233 Roman miles (344.8 km; 214.2 mi). The original road had no milestones, as they were not yet in use. A few survive from later times, including a first milestone near the Porta Appia.
Extension to Beneventum The
Third Samnite War (298–290 BC) is perhaps misnamed. It was an all-out attempt by all the neighbors of Rome: Italics, Etruscans and
Gauls, to check the power of Rome. The Samnites were the leading people of the conspiracy. Rome dealt the northerners a crushing blow at the
Battle of Sentinum in
Umbria in 295. The Samnites fought on alone. Rome now placed 13 colonies in Campania and Samnium. It must have been during this time that they extended the Via Appia 35 miles beyond Capua past the Caudine Forks to a place the Samnites called Maloenton, "passage of the flocks". The itinerary added
Calatia,
Caudium and
Beneventum (not yet called that). Here also ended the
Via Latina.
Extension to Apulia and Calabria By 290 BC, the sovereignty of the Samnites had ended. The heel of Italy lay open to the Romans. The dates are somewhat uncertain and there is considerable variation in the sources, but during the Third Samnite War the Romans seem to have extended the road to
Venusia, where they placed a colony of 20,000 men. After that they were at Tarentum. Roman expansion alarmed Tarentum, the leading city of the Greek presence (Magna Graecia) in southern Italy. They hired the mercenary King
Pyrrhus of Epirus in neighboring
Greece to fight the Romans on their behalf. In 280 BC the Romans suffered a defeat at the hands of Pyrrhus at the
Battle of Heraclea on the coast west of
Tarentum. The battle was costly for both sides, prompting Pyrrhus to remark "One more such victory and I am lost." Making the best of it, the Roman army turned on Greek
Rhegium and effected a massacre of Pyrrhian partisans there. Rather than pursue them, Pyrrhus went straight for Rome along the Via Appia and then the Via Latina. He knew that if he continued on the Via Appia he could be trapped in the marsh. Wary of such entrapment on the Via Latina also, he withdrew without fighting after encountering opposition at
Anagni. Wintering in
Campania, he withdrew to Apulia in 279 BC, where, pursued by the Romans, he won a second costly victory at the
Battle of Asculum. Withdrawing from Apulia for a Sicilian interlude, he returned to Apulia in 275 BC and started for Campania up the Roman road. Supplied by that same road, the Romans successfully defended the region against Pyrrhus, crushing his army in a two-day fight at the
Battle of Beneventum in 275 BC. The Romans renamed the town from "Maleventum" ("site of bad events") to Beneventum ("site of good events") as a result. Pyrrhus withdrew to Greece, where he died in a street fight in Argos in 272 BC. Tarentum fell to the Romans that same year, who proceeded to consolidate their rule over all of Italy. The Romans pushed the Via Appia to the port of
Brundisium in 264 BC. The itinerary from Beneventum was now
Aeculanum, ,
Venusia,
Silvium, Tarentum,
Uria and Brundisium. The Roman Republic was the government of Italy, for the time being. Appius Claudius died in 273, but in extending the road a number of times, no one has tried to displace his name upon it.
Rediscovery The Appian Way's path across today's regions
Lazio and
Campania has always been well known, but the exact position of the part located in Apulia (the original one, not the extension by Trajan) was long unknown, since there were no visible remains of the Appian Way in that region. In the first half of the 20th century, the professor of ancient Roman topography
Giuseppe Lugli managed to discover, with the then-innovative technique of
photogrammetry, what probably was the route of the Appian Way from
Gravina in Puglia (
Silvium) up to
Taranto. When analysing
aerophotogrammetric shots of the area, Lugli noticed a path () named
la Tarantina, whose direction was still largely influenced by the
centuriation; this, according to Lugli, was the path of the Appian Way. This path, as well as the part located in today's
Apulia region, was still in use in the
Middle Ages. A further piece of evidence for Lugli's proposed path is the presence of a number of archaeological remains in that region, among them the ancient settlement of Jesce. By studying the distances given in the
Antonine Itinerary, Lugli also assigned the Appian Way stations
Blera and
Sublupatia (which also occurs on the
Tabula Peutingeriana) respectively to the areas
Murgia Catena and
Taverna (between masseria (estate farmhouse) S. Filippo and masseria S. Pietro). However, the toponym
Murgia Catena defined too large an area, not allowing a clear localization of the Appian Way station. More recently Luciano Piepoli, based on the distances given in the
Antonine Itinerary and on newer archeological findings, has suggested that
Silvium should be
Santo Staso, an area very close to
Gravina in Puglia,
Blera should be
masseria Castello, and
Sublupatia should be
masseria Caione.
Main branches built a deviation of Via Appia. This is a tract of Via Appia Traiana near
Egnatia. Since the latter stretch of the Appian Way turned out to be very impervious, some branches were created: first the , then the , finally the emperor
Trajan built the
Via Traiana, a branch of the Via Appia from Beneventum, reaching Brundisium via
Canusium and
Barium rather than via Tarentum. This was commemorated by an arch at Beneventum. Travellers could cross the
Adriatic Sea through the
Otranto Strait towards
Albania either by landing at present day
Durrës through the
Via Egnatia or near the ancient town of
Apollonia and continue towards present day
Rrogozhinë in central Albania. == Notable historical events along the road ==