On September 30, 2006, part of an overpass ( section of a three-lane overpass) collapsed in Laval, a suburb of Montreal, on Boulevard de la Concorde running over Autoroute 19. The collapse crushed two vehicles under it, killing five people and seriously injuring six others who went over the edge while travelling on the overpass . The autoroute was closed for almost 4 weeks , "disabling an important north-south link between Montreal and its northern suburbs as well as the Laurentian region" .
A number of people had noticed that the overpass wasn't in good shape:
"People living near de la Concorde and Highway 19 told The Gazette they had noticed the overpass had begun to crumble in recent months"
Carole Hackenbeck, less than a month before the collapse, noticed that there were "unusually large gaps and misaligned spacing in the deck-support structure underneath" .
"One witness told TVA television network that he noticed the road had sunk an inch or two when he travelled over the overpass minutes before the collapse, and he called emergency dispatchers" .
Also, "several motorists told LCN they had called police up to an hour before the collapse to report seeing fissures appearing in the overpass roadbed and chunks of concrete falling to the road below" .
Responses to calls
When the Quebec Ministry of Transport was contacted regarding blocks of concrete falling onto Autoroute 19 from the Concorde... Read More