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Accident Report Detail

Stationwagon Penetration of Bridgerail, I-10

Executive Summary

‚ÄčAbout 3:40 p.m., p.s.t., November 11, 1978, a stationwagon with 13 occupants exited from Interstate 10 (San Bernardino Freeway) onto a branch connection ramp which led to the southbound California State Route 7 (Long Beach Freeway). It was raining and the roadway was wet. As the stationwagon negotiated the ramp, the driver lost control of the vehicle and it crashed through the bridgerail and fell to the roadway below landing on its roof. The driver and six passengers were killed and six passengers were injured.

Probable Cause

‚ÄčThe National Transportation Safety Board determines that the probable cause of this accident was the driver's loss of control of the stationwagon on the branch connection ramp, which resulted from (1) the road surface's low coefficient of friction, (2) the speed of the vehicle, (3) the degraded condition of the vehicle, and (4) the intoxication of the driver. The severity of the crash was magnified by the failure of the bridgerail, known to be inadequate by current standards, to retain the vehicle.

Accident Location: Alhambra , CA    
Accident Date: 11/11/1978
Accident ID: 79754

Date Adopted: 6/7/1979
NTSB Number: HAR-79-05
NTIS Number: PB-297564/AS

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