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Accident Report Detail

Automobile Collision with and Collapse of the Yadkin River Bridge

Executive Summary

‚ÄčAbout 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.

Probable Cause

‚ÄčThe 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 MP structural member of the bridge truss. The timber railing was not adequate to sustain impact at posted speeds.

Accident Location: Siloa , NC    
Accident Date: 2/23/1975
Accident ID: 79741

Date Adopted: 4/22/1976
NTSB Number: HAR-76-03
NTIS Number: PB-253359/AS

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