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Bridge Failure Database

Viaduct Boulevard de la Concorde in Laval

Year 2006
Type Road
Country Canada (13)
Cause Human error
Details A stretch of three lanes of the viaduct gave way, dropping onto the highway below. The collapse happened because steel reinforcing rods were installed incorrectly in the structure. Hidden deterioration.
Fatalities 5
Injuries 6
Collapse partial
Phase in service
Period 1991-2009
Continent North America
References http://www2.canoe.com/infos/quebeccanada/archives/2006/10/20061014-101500.html
WOOD, G.M., Implications of the collapse of the Concorde overpass, The Structural Engineer, Volume 86, Number 1, 2008, pp. 16-18.

Note: This information is provided for reference only, and was compiled from publicly available sources which may contain inaccuracies. Neither Campbell Middleton nor Daniel Imhof nor the Bridge Owners' Forum make any guarantee as to the correctness, usefulness, or fitness for purpose of any of the data in these pages.