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Safety Recommendation Details

Safety Recommendation H-90-069
Details
Synopsis: ABOUT 8:15 P.M. CENTRAL STANDARD TIME, APRIL 1, 1989, AN 85. 5-FOOT SECTION OF THE 4,201-FOOT-LONG NORTHBOUND U.S. ROUTE 51 BRIDGE OVER THE HATCHIE RIVER FELL ABOUT 20 FEET INTO THE 24-FOOT-DEEP RAIN-SWOLLEN RIVER AFTER TWO PILE-SUPPORTED COLUMN BENTS SUPPORTING THREE BRIDGE SPANS COLLAPSED. WITNESS REPORTS AND PHYSICAL EVIDENCE INDICATE THAT THE SOUTHERN COLUMN BENT (70) AND THE TWO SPANS THAT IT SUPPORTED FELL QUICKLY, CAUSING FOUR PASSENGER CARS AND ONE TRACTOR-SEMITRAILER TO PLUNGE INTO THE RIVER. THE ADJACENT COLUMN BENT (71) AND THE SPAN THAT IT WAS SUPPORTING THEN COLLAPSED ON TOP OF THE VEHICLES. THE RIVER HAD APPARENTLY BEEN AT FLOOD STAGE SINCE NOVEMBER 1988. ALL EIGHT VEHICLE OCCUPANTS DIED AS A RESULT OF THE COLLAPSE. (COVINGTON, TENNESSEE)
Recommendation: THE NTSB RECOMMENDS THAT THE TENNESSEE DEPARTMENT OF TRANSPORTATION: TRAIN TDOT PERSONNEL INVOLVED IN BRIDGE IN SPECTIONS TO EVALUATE SCOUR IN ACCORDANCE WITH THE FHWA TECHNICAL ADVISORY "SCOUR AT BRIDGES" AND OTHER FHWA AND ASSHTO PUBLICATIONS CONCERNING THE INSPECTION OF UNDERWATER BRIDGE ELEMENTS.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Highway
Location: Covington, TN, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA89MH006
Accident Reports: Collapse of the Northbound U.S. Route 51 Bridge Spans over the Hatchie River
Report #: HAR-90-01
Accident Date: 4/1/1989
Issue Date: 7/24/1990
Date Closed: 1/8/1993
Addressee(s) and Addressee Status: State of Tennessee, Department of Transportation (Closed - Acceptable Action)
Keyword(s):

Safety Recommendation History
From: NTSB
To: State of Tennessee, Department of Transportation
Date: 1/8/1993
Response: THE BOARD IS PLEASED TO LEARN THAT TDOT INSPECTION & EVALUATION PERSONNEL HAVE COMPLETED SEVERAL COURSES, INCLUDING SOME IN-HOUSE INSTRUCTION, ON BRIDGE INSPECTION. WE URGE THE TDOT TO CONTINUE TO PROVIDE ALL PERSONNEL INVOLVED IN BRIDGE INSPECTIONS WITH PERIODIC FOLLOW-UP TRAINING. RECOMMENDATION H-90-69 HAS BEEN CLASSIFIED "CLOSED--ACCEPTABLE ACTION."

From: State of Tennessee, Department of Transportation
To: NTSB
Date: 9/14/1992
Response: INSPECTION AND EVALUATION PERSONNEL HAVE RECEIVED IN HOUSE INSTRUCTION ON THE TA "SCOUR AT BRIDGES", AND HEC NO. 18. BRIDGE INSPECTION PERSONNEL ATTENDED A BRIDGE INSPECTION SCHOOL BASED ON THE BRIDGE INSPECTORS MANUAL 90 AND AN NHI TRAINING COURSE ON STREAM STABILITY. TDOT WILL CONTINUE TO PROVIDE FOLLOW-UP TRAINING ON PERIODIC BASIS.

From: NTSB
To: State of Tennessee, Department of Transportation
Date: 6/12/1992
Response: