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  • International Database for Civil and Structural Engineering

Quebec Bridge

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General Information

Other name(s): Pont de Québec
Beginning of works: 1904
Completion: 1907
Status: collapsed (1907)

Project Type

Structure: Cantilever truss bridge
Function / usage: Railroad (railway) bridge
Material: Steel bridge

Geographic Information & Related Structures

Location: Quebec, Capitale-Nationale, Quebec, Canada
  • Saint Lawrence
Replaced by: Pont de Québec (1919)

Technical Information


main span 549 m


truss steel


August 1907

Buckling is noticed in some plates near the tower base. Theodore Cooper orders a halt of construction which never reaches the site.

29 August 1907, 15:00

After examining reports about buckling problems during construction of the bridge, Theodore Cooper sends a telegram to John Deans, chief engineer of the Phoenix Bridge Company on site. The telegram orders Deans to halt all works until the phenomenon has been studied in detail. Deans ignores it.

29 August 1907, 17:15

The bridge collapses 15 minutes before end of the working day. 85 workers crash into the waters, only 11 survive.



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