 The station features four tracks – the inner pair serving Market–Frankford trains and the outer pair for subway–surface trolleys.30th Street station opened on November 6, 1955 by the Philadelphia Transportation Company (PTC), built as a replacement for the elevated 32nd Street station that had opened in 1907 as part of the Philadelphia Rapid Transit Company's original Market Street subway–elevated line from to , which was elevated west of 23rd Street.The PRT announced a project to bury the elevated tracks between 23rd to 46th streets in the 1920s.