Publications
Footbridge in History
Footbridges, including the UNESCO-listed Pont du Gard (Roman Aqueduct), serve as cultural and historical symbols that integrate with their surrounding landscapes. This study highlights how these structures embody the 'genius loci'—the unique spirit of a place—through their ties to history, events, and intangible heritage. Unlike conventional views of bridges as mere functional or aesthetic objects, this research demonstrates their role in shaping cultural narratives, from ancient Roman aqueducts to medieval 'Devil's Bridges,' war-rebuilt structures like Mostar Bridge, and modern interventions such as Istanbul's requalified aqueducts and Venice's Calatrava Bridge. The analysis underscores how footbridges bridge not only physical spaces but also temporal and symbolic dimensions, reflecting the dynamic interplay between architecture, landscape, and human experience.
Monitoring of the rock mass deformation under the Pont du Gard pier VII foundation
A long-term monitoring study of the Pont du Gard, a Roman aqueduct built around 50 AD to supply water to Nîmes (France), revealed that rock mass deformation under pier VII is influenced by both atmospheric temperature variations and water temperature changes during river floods. The research involved instrumenting two rock bolts in the foundation and tracking their movements over several years. While seasonal thermal effects were dominant, localized deformations correlated with flood events, suggesting dynamic interactions between the aqueduct's structure and hydrological conditions. This finding underscores the need for nuanced monitoring of World Heritage Sites to account for both climatic and environmental factors.
Roman Hydraulic Engineering: The Pont du Gard Aqueduct and Nemausus (Nîmes) Castellum
A new analysis of the Pont du Gard aqueduct's terminal water distribution castellum reveals that Roman engineers employed advanced hydraulic principles to optimize water flow. By applying modern critical flow theory, researchers discovered that the 10 basin wall pipelines were designed to maximize output flow rates while closely matching the input from the aqueduct. The three drainage floor ports further fine-tuned this balance, demonstrating a sophisticated integration of engineering and aesthetics typical of Roman values. This study bridges the gap between descriptive archaeological accounts and the underlying engineering knowledge, offering unprecedented insights into Roman hydraulic innovation.
The Pont du Gard and the aqueduct of Nîmes
The Pont du Gard, a Roman aqueduct spanning 50 kilometers from its source near Uzes to Nîmes, remains notable for its engineering precision and historical significance. This structure, part of the Nîmes aqueduct system, demonstrates the Romans' advanced ability to channel water with minimal slope (6 meters over 34 kilometers). The aqueduct's design reflects evolutionary changes in Roman bridge construction, including a shift toward more regular and rational use of concrete. Despite its frequent documentation, the Pont du Gard lacks a confirmed date, leaving its exact historical placement uncertain. The study highlights its architectural details, composition, and the extensive pictorial records housed in the Musée de Vieux Nîmes, offering insights into Roman engineering practices.
Nemausus
Nemausus, originally a Celtic settlement and later a significant Roman city in Gallia Narbonensis (modern Nîmes), emerged as a rival to Narbo, becoming one of the most successful urban centers in Roman Gaul. By 28 BCE, it was established as a *colonia Latina, hosting an important mint and expanding its walls to enclose approximately 220 hectares. The city's prominence is underscored by its architectural marvels, including an amphitheater, a precinct dedicated to Deus Nemausus, and the iconic Maison Carrée temple, later dedicated to Julius Caesar. Additionally, the Pont-du-Gard aqueduct, part of its extensive water infrastructure, stands as a testament to Roman engineering. Nemausus produced notable figures, including ancestors of Emperor Antoninus Pius, reflecting its enduring cultural and economic influence.
Lessons from a lost technology: The secrets of Roman concrete
Roman concrete, renowned for its durability and use in iconic structures like the Pont du Gard aqueduct and the Colosseum, harbors a hidden secret: the mineral al-tobermorite. This discovery, detailed by Jackson et al. (2013), reveals that Roman seawater concrete undergoes a unique chemical process over time, forming this stable mineral which enhances its longevity. The study analyzed samples from 11 ancient Mediterranean harbors, part of the ROMACONS project (2002-2009), demonstrating how Roman engineers leveraged volcanic ash and seawater to create a material that defies modern concrete's typical degradation. This insight offers potential for developing more resilient, long-lasting infrastructure materials today.
You are here:
World Heritage Explorer > World Heritage Research > World Heritage Sites > Pont du Gard (Roman Aqueduct)