Old Union Ave A Plant signals heading east on track 2. Based on the CORA Guide map it looks like it would be MP 2.3.<br /><br />https://www.acm.jhu.edu//~sthurmovik/Railpics/13-06-21a_CHICAGO_RACETRACK/BNSF_Chicago-Sub-UNION-AVE-A-eb-SL-gantry-tk2-Clear-wide.html<br /><br />[i]Click the image below to enlarge. Click again to minimize.[/i]