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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.
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27. Scheffey, C. F., Cayes, L. R., and Boyer, C.; "Model Tests of Modes of Failure, Joint C13N of Eyebar Chain, Point Pleasant Bridge Investigation," Staff Report, Office of Research and Development, U.S. Bureau of Public Roads, dated June 9, 1970. 28. Starkey, W. L.; "The Possible Role of Mechanical Fretting in the Collapse of the Silver Bridge," Report by Professor W. L. Starkey of Ohio State University to the U.S. Bureau of Public Roads, April 17, 1968. 29. Starkey, W. L.; "Fretting-fatigue Characteristics of 1060 Steel Specimens Taken from the Silver Bridge at Point Pleasant, West Virginia," Report by Professor W. L. Starkey of the Ohio State University to U.S. Bureau of Public Roads, dated February 28, 1969. 30. Slutter, R. G.; "Silver Bridge Eyebar Test: Stress Concentration Factors," Letter Report, Lehigh University to Modjeski & Masters, dated July 9, 1969. 31. Slutter, R. G.; "Silver Bridge Eyebar Tests, Stress Concentration Factors," Letter Report, Lehigh University to Modjeski & Masters, dated August 6, 1969. 32. Bleich, Fredrich; "Theorie und Berechnung des eis. Brucken," Springer, Berlin, (1924) p. 256. 33. Coker, E. G.; "Photonelasticity," Journal Franklin Institute, (1925). 34. Takemura, K. and Hosakawa, Y.; "Reports, Acro. Institute," Tokyo, Vol. 18, (1926), p. 128. 35. Lutz, J. G.; "Field Notes, Point Pleasant Bridge Investigation," Installments 1, 2 and 3 by J. E. Greiner Company, submitted to S.A.&T. Working Group, January-February 1968. 36. Gough, H. J. and Sopwith, D. G.; "Some Comparative Corrosion Fatigue Tests Employing Two Types of Stressing Action," Jor. Iron & Steel Institute, No. 1 (1933). 37. Ludwick, P.; "Notch and Corrosive Endurance Strength," Metallwirtshaft, Vol. 10, September (1931). 38. Fry, A.; Krupp Monatshefte, Vol. 7:185, (1926). 39. Ruttman, W.; Technische Mitteiliungen Krupp, Vol. 4:25 (1936).
Document, cited by the archive. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 202 pages are in the text index: search them above, or from the library's search.