ARCUS Atlas record
Bridge over Otro stream
Partial collapse of a municipal bridge over the Otro stream near Alagna Valsesia (Vercelli) on 13-16 October 2000, as part of the catastrophic alluvione. Documented in the ARPA Piemonte official report (Valle Otro area). Total collapse during the catastrophic alluvione of 13-16 October 2000 that struck over 50% of Piemonte, causing more than 1,800 documented damage events. The ARPA Piemonte report (2003) explicitly documents multiple bridge collapses across the Stura di Lanzo, Orco, Chisone, Dora Riparia, Dora Baltea and Po basins. The event is comparable in scale to the 1994 alluvione del Piemonte. No fatalities directly attributed to this specific collapse. Rapporto d'evento Regione Piemonte - Direzione Servizi Tecnici di Prevenzione (aprile 2001): piena del torrente Otro in loc. Resiga-Otro (Alagna): erosione in sinistra con asportazione pressoche' totale della spalla del ponte. (Il rapporto lo definisce 'ponte statale'; il DB lo registra come municipale: verificare.)
- ARCUS ID
- IT00.10.40
- Date
- 2000-10-13
- Municipality
- Alagna
- Province
- Vercelli
- Region
- Piemonte
- Coordinates
- 45.8477, 7.9395 · exact location
- Crossing
- Otro stream
- Use
- Municipal
- 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
- Abutment
- Cause evidence
- Documented
- Source confidence
- High
- Victims
- 0
- Injuries
- 0
Documentary sources (3)
- 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)