Roman bridge‑aqueduct uncovered in Zaragoza during road works

Roman bridge‑aqueduct emerges in Zaragoza

Routine road maintenance between Plaza de San Miguel and the Coso area in Zaragoza revealed a well‑preserved subterranean Roman structure. Municipal archaeological teams responded immediately, recording the site with photography, detailed plans and 3D scans.

How the discovery happened

Workers noticed regular masonry fragments and small channels in the soil, prompting suspension of works and an archaeological intervention. Non‑invasive documentation allowed mapping of the monument without damage, uncovering an extensive construction located meters below the modern surface.

Findings

• Bridge‑aqueduct formed by masonry arches, designed to convey water from the Huerva river to the urban centre.
• Internal water channels engineered to regulate and protect the flow.
• Associated objects: terracotta antefixes, a blown glass fragment and an inscribed bone plaque.

Dating, materials and technique

The structure is dated to the 1st century AD and built in opus caementicium (Roman concrete) combined with stone and brick. Layered walls and carefully arranged channels demonstrate advanced hydraulic and structural expertise designed for longevity and to withstand later urban buildup.

Function and urban role

The monument combined practical functions—spanning low or flood‑prone ground and distributing water to fountains, baths, homes and workshops—with social and symbolic roles, supporting public health, economic activity and the prestige of the Roman colony of Caesaraugusta.

Research value

• Provides fresh evidence on Roman water infrastructure and urban planning.
• Epigraphic and domestic artefacts contribute to reconstructing social and economic aspects of the settlement.
• 3D documentation and ongoing analyses will guide conservation strategies and future study.

Next steps and visiting information

Archaeologists are completing stratigraphic investigations and laboratory analyses of recovered materials. The site is currently secured for study; any public access, displays or guided visits will be announced once conservation and visitor‑management plans are in place.

Visitor note: check announcements from the local archaeological service for updates on site access, exhibitions and publications related to the excavation.