NEW YORK--(BUSINESS WIRE)--Fitch Ratings assigns a 'AA-' rating to the following State of Michigan State Building Authority (SBA) bonds: -- 2015 revenue and revenue refunding bonds, series I (facilities program). The bonds are expected to sell via negotiation on or about July 30th. In addition, Fitch affirms the 'AA-' ratings on outstanding Michigan SBA revenue bonds, the 'AA' rating on State of Michigan GO bonds, and other debt linked to the state's GO rating, as detailed at the end of this re