He became president of the American Society of Civil Engineers (ASCE) Metropolitan section.
[2] At the time of his death, Ridgway was consulting Secretary of the Interior Harold L. Ickes on Chicago's first subway.
According to the December 20, 1938 edition of the Brooklyn Eagle, he died in Fort Wayne, Indiana after suffering a heart attack, while en route to New York after attending ground-breaking ceremonies for the Chicago Subway.
[1] A number of his works are listed on the National Register of Historic Places, with several listed in relation to one multiple property study, the "New York City Subway System MPS".
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