 In 1937, both SR 105 and SR 52 were redesignated as SR 28.It also used the entire length of Broad Street until after the completion of the John C. Calhoun Expressway.The portion of SR 28 between 15th Street and 13th Street was proposed as SR 736 before the John C. Calhoun Expressway was extended along SR 736's path, and SR 28 was shifted onto it.