Infrastructure Seismic Risk

Greece needs a unified, documented view of seismic risk for critical infrastructure. SEISMORISK prioritises bridges, road axes and building stock based on hazard, vulnerability and criticality.

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Ανάλυση γεφυρών και οδικού δικτύου

NATIONAL BRIDGE SUMMARY

6,717

Bridges in national inventory (OSM)

61%

(~4,094)

Class C (older typologies)

28%

Class A (modern motorways)

52%

In EAK zones II-III (≥0.24g)

Screening classification by road typology (material and construction-year data are absent from the OSM inventory). Zones follow the EAK seismic hazard map (Gov. Gazette 1154B/2003) at regional-unit level. The classification is refined per structure in a pilot study.

Bridge Vulnerability Classes (SYNER-G)

ALow vulnerability. Modern construction with seismic design, single spans, good foundation.

BModerate vulnerability. Relatively modern construction with basic seismic design.

CHigh vulnerability. Older construction, multiple spans, no modern seismic design. Risk of damage in moderate earthquake.

DVery high vulnerability. Old pre-code construction, no bearings or expansion joints. Risk of collapse in strong earthquake.

Classification based on SYNER-G fragility curves (EU FP7)

Highest screening priority

Class C/D in Zone III (0.36g, Ionian islands): 37

See how quantum computing optimizes the seismograph network →

Disclaimer:

This analysis is based on publicly available data (OSM, EAK zonation, SYNER-G-type fragility curves). It does not replace on-site inspection or detailed structural assessment. It is a prioritisation tool, not a safety certification.