A backlog at Norfolk Southern’s Chicago railyard is reportedly causing shipping delays at U.S. east coast ports. Average daily railcar counts at Norfolk Southern’s Calumet Yard in Chicago increased 19.7% sequentially in the four weeks to March 31 versus a 3.8% decline for all yards in the city. Norfolk Southern’s network connects to six major east coast seaports, including Newark / New York and Baltimore, with major cities including Pittsburgh, Cleveland, Detroit and Chicago. Total U.S. seaborne imports arriving at Newark / New York and Baltimore and headed to those ...