 The tunnel from 23rd to 32nd streets was completed by 1933, but construction on the remaining segment was put on hiatus due to the Great Depression and World War II.The PRT went bankrupt in 1939 and was reorganized as the PTC, which began building the rest of the tunnel in 1947.The underground station is half a block southwest of the main 30th Street Station building, which serves Amtrak, SEPTA Regional Rail, and New Jersey Transit trains.