ARCUS Atlas record
A4 Milano–Torino bridge over Dora Baltea
Partial collapse / severe damage of the A4 Milano–Torino crossing over the Dora Baltea near Rondissone during the October 2000 flood. The ANPA post-event report documents failure of the bridge-side/approach area and states that the partial collapse was caused by a derivation channel formed by the floodwaters rather than by direct action of the main river. D'Angelo, Ballio & Ravazzani (2025), record P046, classifies the governing process as approach-embankment/lateral erosion.
- ARCUS ID
- IT00.10.41
- Date
- 2000-10-13
- Municipality
- Rondissone
- Province
- Torino
- Region
- Piemonte
- Coordinates
- 45.249, 7.99 · exact location
- Crossing
- Dora Baltea river
- Use
- Motorway
- Severity
- PC
- Structural type
- Beam bridge
- Material
- Reinforced concrete
- Cause category
- Natural
- Specific cause
- Hydraulic
- Failure trigger
- Flood
- Failure process
- Bank erosion / embankment failure
- Component involved
- Approach embankment
- Cause evidence
- Documented
- Source confidence
- High
- Victims
- 0
- Injuries
- 0
Documentary sources (4)
- Evento alluvionale regionale 13-16 ottobre 2000 – monografia ufficiale (Official/Technical · ARPA Piemonte · 2002-10-16)
- 10 anni fa alluvione Nord-Ovest, fu inferno d'acqua – Piemonte e Valle d'Aosta (News · ANSA · 2010-10-13)
- Bridge collapses in Italy across the 21st century: survey and statistical analysis (Scientific · Journal Paper · 2025-01-01)
- ANPA/ARPA – Evento alluvionale ottobre 2000: effetti sul ponte A4 sulla Dora Baltea (Official/Technical · Post-event technical report)