25. Ville Marie Tunnel

Location: Montreal, Canada

Year of Fail: 2011

In July of 2011 a concrete beam, and the section of the roof it was supporting, collapsed inside this downtown tunnel.  Traffic was luckily sparse and no one was killed. Still under investigation, engineers fault the province for the failure, stating that inspections of the tunnel were rare and cursory. In addition, several repairs that had been suggested in 2008 were not completed, or in some cases, even begun by the transit department at the time of collapse. The government, however, maintains that poorly planned construction work ordered by the tunnel’s engineers, and carried out on the day of destruction, is to blame.