NY -- Standard&Poor's CreditWire 5/11/98 – Standard&Poor's today assigned its single-'A' underlying rating (SPUR) to Hamilton County, Ohio's $265.4 million sales tax bonds (Football Stadium Project) series 1998B dated May 1, 1998 due Dec. 1, 2002-2027. The bonds are scheduled to sell May 20, 1998 and are expected to receive a triple-'A' rating based on bond insurance. In addition, Standard&Poor's affirmed its single-'A' SPUR rating on the county's $71.61 million sales tax bonds series 1998A dated Jan. 1, 1998 due Dec. 1, 2002-2027. The SPUR rating reflects healthy sales tax revenue growth and a large and diverse economy anchored by Cincinnati (double-'A'-plus rating). These strengths are tempered by weaknesses including: -- Adequate legal provisions