Saint Joseph Boulevard (official in ) is a major boulevard located east of Mount Royal in Montreal, Quebec, Canada. Although it is mainly residential, it is a major eastâÂÂwest artery in the Plateau Mont-Royal and the RosemontâÂÂLa Petite-Patrie boroughs. Its intersection with D'Iberville Street is known as the infamous Tunnel de la mort (Death Tunnel). Laurier metro station is located on the boulevard. It also intersects Route 335 (Saint Denis Street).