The Via Amerina was a road that broke off from the Via Cassia near Baccanae, and held north through Falerii, Tuder, and Perusia, rejoining the Via Cassia at Clusium. When the incursions of Faroald, the Lombard Duke of Spoleto, cut the Via Flaminia, the lifeline between Rome and Ravenna, the Via Amerina was improved and fortified at intervals, works that represented some of the last road-building carried out in Italy in Late Antiquity. As the new military and strategic route, the Via Amerina "became the communications core of Imperial Italy and the chief support to the claim that imperial Italy was still extant."[3]
^Jan T. Hallenbeck, "Pavia and Rome: The Lombard Monarchy and the Papacy in the Eighth Century" Transactions of the American Philosophical Society New Series 72.4 (1982 pp. 1-186) p 8.