In the 1920s and '30s the Pennsylvania Railroad built two new stations: 30th Street Station, which is now the main intercity hub for Philadelphia rail travel, and Suburban Station, a stub line from 30th Street Station to a tunnel ending northwest of City Hall, just north of Broad Street Station. (Around 1984 this line was extended east as part of the Center City Commuter Connection tunnel.) 30th Street Station was a through railway station that did not require intercity trains to turn around to exit the station (but a loop track was proposed just south of the station to allow the through east-west trains to come close to the center of the business district), while Suburban Station took over the electric commuter trains. In July 1947 Broad St scheduled 55 weekday departures: 9 to the south, 8 that would head west from Zoo, and 38 that would turn east from Zoo (14 of which would cross the Delair bridge).