 The day after the I-35W Mississippi River bridge collapse, the City of Montreal revised its policies for one of those, the Henri-Bourassa overpass above Pie IX Boulevard, closing it completely to all trucks.This overpass has since been demolished and replaced with an at-grade intersection.As of April 2008, 28 bridges in Quebec are slated to be demolished due to structural deficiencies, and 25 are to receive major repairs.