Post-World War II construction projects included an entrance to Dallas from the north, and relocation of the main line across northern Arizona, between Seligman and Williams. In 1960, AT&SF bought the Toledo, Peoria & Western Railroad (TP&W), then sold a half interest to the Pennsylvania Railroad (PRR). The TP&W cut straight east across Illinois from near Fort Madison, Iowa (Lomax, IL), to a connection with the PRR at Effner, Indiana (Illinois–Indiana border), forming a bypass around Chicago for traffic moving between the two lines. The TP&W route did not mesh with the traffic patterns Conrail developed after 1976, so AT&SF bought back the other half, merged the TP&W in 1983, then sold it back into independence in 1989.