Westbound Canadian National transfer train passing Ash Street Tower. ( Closed / Abandoned.) Chicago Illinois USA. June 2007.

I took this photo on a rainy morning in June of 2007. Seen here on Chicago's near southwest side at approximately South western Avenue and West 33rd Street, is the former Ash Street Junction interlocking tower, wich was closed in 2001. It is still standing, but it is locked and gated off t0 deter trespassers and/ or vandals today.
It is more than likely standing here on borrowed time. This is an example of Modern Interlocking Tower design before they were phased out in recent years. The Canadian National freight train in the background, is led by former Grand Trunk Western locomotives.