[5] The Westinghouse Interworks Railway was chartered on February 25, 1902, and on April 8 of the following year the company signed a 25-year lease allowing its trains to operate over a portion of the East Pittsburgh Branch owned by the Pennsylvania Railroad (PRR).

[15] A large flood control project stretching from the 1950s through the '60s included a change to the banks of the Turtle Creek waterway that required the removal of Interworks tracks between Wilmerding and Pitcairn, and the decision was made not to rebuild them.

[18] The remaining portion of the railroad west of Wilmerding was never formally abandoned, and has been acquired by the Regional Industrial Development Corporation of Southwestern Pennsylvania (RIDC) who also purchased the old Westinghouse Electric plant adjacent to the rail, renaming it, "The Keystone Commons".

Since this acquisition some limited rail activity has been observed at the southernmost section of The Commons in East Pittsburgh, where a locomotive from the adjoining Union Railroad has been occasionally spotted pushing deliveries.

Local civic leaders as well as neighboring businessmen voiced their objections, questioning the wisdom of using public funds to restore unused track, arguing that the money could have been better spent.