| The middle engine on SWP/CSX train Z687-12. Allegheny Valley Railroad is the sister RR of the Southwest Pennsylvania Railroad and has been helping them out with engine power all year. former LLPX 9901, KCS 2816, KCS 4740, NREX 6703, CSX 6703, SBD 6703, SCL 1548, SAL 633. Built in January 1967. |