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Collapse of U.S. 35 Highway Bridge, Point Pleasant, West Virginia, December 15, 1967 (HAR-71/01)
National Transportation Safety Board · 1970-12-16 · 202 pages · text by OCR
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.
“Masters”10 pages
- p. 5 …Framework for Conduct of Investigation 14
4 Master Chart for Location of Laboratory Specimens 26
5a…
- p. 9 …The consulting engineering firm of Modjeski and Masters, Harrisburg, Pennsylvania
4. The consulting engineering firm of…
- p. 22 …Steel using a digital computer, and were independently checked by the firm of Modjeski and Masters…
- p. 29 …conducted by the firm of Modjeski and Masters to determine what influence surface corrosion may have…
- p. 33 MASTER_CHART FOR LOCATION OF LABORATORY SPECIMENS
- p. 86 …direction of the firm of Modjeski and Masters, consultants to the West Virginia Department of Highways…
- p. 103 and Masters, has been described in Section III C of this report. The final paragraph of…
- p. 137 …Y.; "Corrosion Survey of the Silver Bridge," Report by Modjeski and Masters, No. 1663, dated September…
- p. 139 …Stress Concentration Factors," Letter Report, Lehigh University to Modjeski & Masters, dated July 9, 1969.
31. Slutter…
- p. 151 …shipped to Fritz Engineering Laboratory by Modjeski & Masters
1. Eyebar 25'-4" ± c.c. pin holes…
## TABLE 2
Summary of Chemical Analysis of A7-24 Type Steel From Pt. Pleasant Bridge by Several Laboratories
Composition, %
C 0.02 Mn 0.58 P 0.011 S 0.032 S1 0.10 Cu 0.019 N1 0.010 Cr 0.015 Mo 0.007 A1
0. 29 0.71 0.018 0.029 <0.10
Nat'l. Bureau (1) Web from of Standards Chain Bent Post, 5/8 inch thick
0. 22 0.40 0.013 0.017 <0.10
## <0.05 <0.06
(2) Gusset Plate U7N, 3/4 inch thick
ASTM Specifications for A7-24 Steel
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Document, cited by the archive. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 202 pages are in the text index: search them above, or from the library's search.