Beginning in June 1949, Ridge Spur and Bridge Line trains were through-routed at 8th and Market. The unused Locust Street tunnel was completed on February 15, 1953; Bridge Line trains were extended to a new terminus at 15th–16th Street station with two intermediate stops, while Ridge Spur trains reverted to running between 8th Street and Girard. In January 1954, due to low ridership, off-peak service and Saturday again began operating between Girard and Camden, with a shuttle train operating between 8th and 16th stations. Sunday service was suspended at that time due to minimal usage. Ridge Spur service was suspended from August 23 to 27, 1968, as tracks were switched to a new upper-level terminal platform at 8th Street station to allow conversion of the 8th–Locust Street subway into the Lindenwold High-Speed Line (PATCO Speedline).