...DALLAS (S&P Global Ratings) May 9, 2016--S&P Global Ratings assigned its '##-' long-term and underlying ratings (SPUR) on Washington Metropolitan Area Transit Authority, D.C.'s (WMATA or the authority) $220 million gross revenue transit bonds series 2016A. In addition, S&P Global Ratings affirmed its '##-' rating on the authority's outstanding 2009A&B gross revenue transit bonds. S&P Global Ratings also affirmed its '##-' stand-alone credit profile (SACP) and '##-' issuer credit rating (ICR) on WMATA. The outlook is stable. "We view the authority's very low industry risk and extremely strong economic fundamentals as key credit strengths," said S&P Global Ratings credit analyst Todd Spence. The ratings reflect our view of WMATA's: + Very low industry risk, with low cyclicality and volatility of earnings during economic cycles, and very low competition; + Extremely strong economic fundamentals, with high per capita income and good growth in population and employment; + Very strong management...