S&P Global Ratings assigned its 'A' rating to Wisconsin Center District (WCD) series 2016A senior dedicated tax revenue bonds. The outlook is stable. The district will use 2016A bond proceeds to fund part of the Milwaukee Arena project. The rating reflects: The deep and diverse economy of the Milwaukee metropolitan area, Strong coverage of maximum annual debt service (MADS), and Adequate legal provisions including a 1.25x senior lien additional bonds test. A constraining factor is the inherently volatile nature of the various pledged revenues, which are prone to economic sensitivity. The senior obligations are secured by a first lien on the following tax revenues: 2.5% basic room tax applicable to temporary lodging facilities in Milwaukee County; 7% additional room tax