The Rio-Antirrio Bridge: An Engineering Marvel in Greece
The Rio-Antirrio Bridge in Greece is a remarkable feat of engineering, designed to withstand extreme environmental conditions. This iconic structure faces seismic and meteorological risks that require continuous monitoring to ensure its structural integrity. For over 16 years, Gefyra, the bridge’s operating concession holder, has entrusted Sixense with this critical task.
Monitoring the Rio-Antirrio Bridge from Construction to Present
From the very beginning, during the construction phase, Gefyra recognized the need to monitor the bridge’s structural response to its environment. This process also served to validate the assumptions made during the design phase. Continuous monitoring of the aging structure is vital in determining whether the bridge can reopen after extreme weather events, such as high winds or earthquakes, or if maintenance closures are required.
Advanced Monitoring with EverSense® Structural Health System
The Rio-Antirrio Bridge has been under close observation since its opening to traffic in 2004, thanks to EverSense®, a state-of-the-art Structural Health Monitoring (SHM) system developed by Sixense. This system, with its 1,000 data acquisition channels, has enabled Gefyra to record and analyze the bridge’s behavior over time. It plays a crucial role in identifying and assessing structural changes, particularly after extraordinary events like earthquakes or severe winds.
Ongoing Upgrades and Real-Time Traffic Management
The EverSense system has undergone regular maintenance and upgrades since its installation. Today, it incorporates real-time traffic management features, ensuring safety during seismic activity or extreme weather conditions. By validating the bridge’s design data and analyzing high-quality structural information, the system has facilitated timely and safe reopening of the bridge after major environmental events over the past 16 years.
Safety and Innovation: The Sixense Approach
The advanced real-time monitoring capabilities provided by Sixense have been instrumental in creating a comprehensive overview of the bridge’s structural health. These capabilities include automated alerts immediately following significant events, such as earthquakes. According to Aris Stathopoulos, Structural Maintenance Manager at Gefyra SA/VINCI Concessions, the Sixense system significantly enhances safety, which remains their highest priority.