The viaduct of Blois is a viaduct which spans the Autoroute 19 (Papineau), of the same type as the Viaduc of the Harmony, which crumbled the September 30th 2006. This viaduct was demolished on October 21st, 2006 since it was built the same year with same materials and with less than one kilometer of the viaduct of the Harmony. Like this last, it was rebuilt, for a reopening envisaged in June 2007.