- Welcome to the online home of Salt Lake City's Downtown Alliance, a non-profit organization created to foster business, community and culture in the Central Business District (CBD). Established in 1991, the Alliance is comprised of more than 2, 500 business and property owners in the CBD's 40-block area, which is bounded by North Temple, 500 West, 400 South, and 200 East. A special assessment on ...www.downtownslc.org