NEW YORK (S&P Global Ratings) May 22, 2017--S&P Global Ratings today assigned its 'BBB+' issue-level rating to Norfolk Southern Corp.'s senior unsecured notes. The company will use the proceeds from these notes for general corporate purposes. Our corporate credit rating on Norfolk Southern reflects our favorable view of the North American freight railroad industry, given the limited competition from alternative modes of commercial freight transport, the formidable barriers to entry, and its moderate cyclicality. Our rating is also based on the company's strong competitive position, extensive rail network, diverse revenue streams, and strong operating efficiency. Our outlook on Norfolk Southern is stable. We could lower our ratings on the company if its financial profile weakens because of greater-than-expected pressure on