INVESTIGATION AND ANALYSIS OF THE FRACTURED GIRDER IN BRIDGE NO. 9800, T.H. 56 OVER MISSISSIPPI RIVER IN ST. PAUL, MINNESOTA

A detailed study of the fractured girder in Bridge 9800 (LaFayette Bridge) over the Mississippi River was made using material from the cracked girder. The results of the study indicate the fracture of a main girder of the LaFayette Street Bridge was due to the formation of a fatigue crack in the lateral bracing gusset to transverse stiffener weld.

• Supplemental Notes:
  • Sponsored by FHWA.
• Corporate Authors:

  Minnesota Department of Highways

  408 Highway Building
  St Paul, MN  United States  55155
• Authors:
  • Fisher, J W
  • Pense, A W
  • Roberts, R
• Publication Date: 1975-10

Media Info

• Pagination: 55 p.

Subject/Index Terms

• TRT Terms: Bracing; Cracking; Fracture mechanics; Girder bridges; Mechanical fatigue; Transverse stiffeners
• Uncontrolled Terms: Fracture
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00139788
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: MNHW-5-380-75-1 Final Rpt.
• Contract Numbers: State Study No. 1
• Files: TRIS, USDOT, STATEDOT
• Created Date: Dec 15 1976 12:00AM