The Rifle Lodge No. 129, A.F & A.M. (Ancient Free & Accepted Masons), also known as the Rifle Masonic Lodge, is a two-story brick building built in 1914 located along Railroad Avenue in Rifle, CO. Rifle Lodge No. 129, A.F & A.M. is significant for its long-standing role as a place for fraternal organizational meetings and public and social gatherings for the larger community of Rifle. Additionally, for several months in 1918, the building also served as a temporary hospital for patients afflicted by the influenza pandemic of 1918-19. Fraternal organizations such as the Ancient Free and Accepted Masons played an important role in the social life of small towns, particularly in more remote areas such as the Western Slope of Colorado, where they offered mutual assistance to members and their lodge building served as a prominent social venue for townspeople as well as ranchers and farmers who lived in the vicinity.