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This is the final highway accident report (NTSB-HAR-71-1) from the National Transportation Safety Board, adopted in December 1970. It covers the collapse of the U.S. 35 bridge between Point Pleasant, West Virginia, and Kanauga, Ohio, on December 15, 1967, which killed 46 people. The Board found that the cause was a cleavage fracture in eyebar 330 at joint C13N. That fracture grew from a flaw produced over 40 years by stress corrosion and corrosion fatigue, in a spot that could not be seen or found by inspection.
“R.G.”1 page
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3. While it is expected that the new Federal standards for bridge inspections, programs for training of inspectors, the Guide, and the AASHO Manual for Maintenance Inspections will become known to many state and local authorities responsible for bridges not in the Federal-Aid System, there is no requirement that such authorities implement the intent of these documents. (82, 83) 4. The bridge safety requirements of the Federal-Aid-Highway Act of 1968 have created the situation wherein bridges in the Federal-Aid System are required to meet rigorous Federal standards for inspection and maintenance, while the majority of the bridges in the country are not subject to those standards, except as voluntarily adopted. (82, 83)
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