AUTOMOBILE COLLISION WITH AND COLLAPSE OF THE YADKIN RIVER BRIDGE NEAR SILOAM, NORTH CAROLINA. FEBRUARY 23, 1975
About 9:25 p.m. on February 23, 1975, an automobile struck a vital structural member of the Yadkin River Bridge near Siloam, North Carolina. The collision occurred in heavy fog. Following the impact, the bridge collapsed and both the automobile and the bridge fell into the river. Six more vehicles vaulted into the collapse zone within a 17-minute period. Four persons were killed and 16 were injured. The National Transportation Safety Board determines that the probable cause of the bridge collapse was the penetration of the timber railing by the vehicle and its subsequent impact with and crushing of a vital structural member of the bridge truss. The timber railing was not adequate to sustain impact at posted speeds. The report contains recommendations to the Department of Transportation to improve the safety of bridges on public roads.
National Transportation Safety BoardOffice of Surface Transportation Safety
Washington, DC United States 20594
- Publication Date: 1976-4-22
- Pagination: 32 p.
- TRT Terms: Bridge members; Collapse; Crash investigation; Crashes; Fog; Guardrails; Highway bridges; Maintenance; Skid resistance; Structural analysis; Timber construction; Traffic crashes; Traffic safety; Trusses
- Uncontrolled Terms: Motor vehicle accidents
- Old TRIS Terms: Brittle fracturing; Collison; Timber guardrails
- Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; Safety and Human Factors;
- Accession Number: 00136984
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NTSB-HAR-76-3 Acc. Rpt.
- Files: NTIS, TRIS
- Created Date: Aug 11 1976 12:00AM