Decumano di Aratria Galla

Roughly a hundred metres of Roman street survive in the open at Aquileia, paved in volcanic trachyte hauled from the Euganean Hills and paid for, twin inscriptions suggest, by a woman named Aratria Galla — a donor whose name still labels the road she financed.

Why it matters

Streets made Roman cities legible, and this decumanus — the east–west axis — shows the system at full work. It linked the river port on the Natisone with the forum and theatre district, lining up with the civil basilica whose excavated remains border the road, so goods, officials and information moved along exactly this line. Two details define the site. The paving survives intact over a hundred-metre stretch, its trachyte slabs worn by traffic, and its very existence is documented by a pair of twin inscriptions read as recording the paving as an act of munificence by Aratria Galla — rare evidence of a woman financing urban infrastructure in a Roman colony.

What to notice

The paving is trachyte, a volcanic rock from the Euganean Hills near Padua, carried by water and road from quarries outside the region. Kerbs, wear patterns and carriageway width reflect cart traffic. The remains of the civil basilica occupy one side; the road runs parallel to the cardo maximus followed by today's Via Giulia Augusta. When sixth-century zig-zag walls redefined the city's perimeter, the decumanus remained in use outside the walls.

Context and history

Excavation returned this sector to light in the 1970s, exposing the hundred-metre stretch now visible. The attribution to Aratria Galla rests on scholarly readings of twin inscriptions associated with the road; no further biography of her is known, and specialists continue to discuss the text and dating. The road's integration into the city's transport logic is the secure part of the story: port to forum to theatre in one straight line, with the civil basilica as its institutional anchor. Its survival under later walls makes it a reference point for understanding how Aquileia's street grid persisted from the colony of 181 BC into the early medieval town.