 The Ministry also sent out messages to journalists and traffic reporters warning of the concrete debris; this was confirmed by Josee Seguin, a spokeswoman for the Ministry.The overpass on the Boulevard de la Concorde (Concorde Boulevard) was built in 1970 and was expected to have a life span of 70 years, of which it only lasted 36.David Lau, as part of an article for the "Ottawa Citizen", suggests that this estimation of 70 years was inaccurate.