Via Nomentana is an ancient road of Italy, leading North-East from Rome to Nomentum (modern Mentana), a distance of 23 km (14 mi). It originally bore the name Via Ficulnensis, from the old Latin village of Ficulnea, about 13 km (8.1 mi) from Rome. It was subsequently prolonged to Nomentum, but never became an important high road, and merged in the Via Salaria a few kilometers beyond Nomentum. It is followed as far as Nomentum by the modern state road, but some traces of its pavement still exist.
Originally starting from now-destroyed Porta Collina in the Servian Walls, in the third century emperor Aurelian build the Porta Nomentana in his new set of walls. Pope Pius IV decided to move the first stretch of the road and built the Porta Pia for this purpose.
Read more about Via Nomentana: Roman Bridges