The stub of the Butler Short Line continued to be used by Pittsburgh Railways as the 2 Etna service until closure in 1952.

[6] Leaving Butler going south along South Chestnut Street the railway crossed the rails of the Baltimore and Ohio Railroad (B&O) and the Bessemer and Lake Erie Railroad (B&LE), before turning west down the valley of the Connoquenessing Creek through Bredinville.

[7] Running parallel to the B&LE through Odell and then east into Thorn Creek past Renfrew Station, the line then headed south, climbing out of Thorn Creek valley alongside Three Degree Road, where the Butler Country Club had a stop of their own.

[8] It continued south along the valley, through Downieville and Valencia to Etna, where it joined the local Pittsburgh Railways route to downtown.

Two cars collided on March 27, 1909 after one was delayed by a derailment on the grade crossing of the Baltimore and Ohio Railroad near Mars.