The Via Annia was the Roman road in Venetia in north-eastern Italy. It run on the low plains of the lower River Po and of the lower Veneto and Friuli Venezia Giulia regions, an area which had many rivers and large marsh areas and bordered the coastal lagoons.Veneto -Via Annia It linked Atria (modern Adria) to Aquileia, passing through Patavium (modern Padua). Then it got to the mainland coast of the Lagoon of Venice near today's Mestre and passed through Altinum. After this, it went through Iulia Concordia (modern Concordia Sagittaria), which was further inland. It was paved only through the main towns. The rest was gravelled. It was six to eighteen metre wide.Stoppini F., In volo alla ricerca della Via Annia, Aviazione Generale It played an important part in the Romanization of the region.
