Fresh off the Merchants Bridge, crossing from Missouri to Illinois, an eastbound Saginaw, TX (BNSF) to Fort Wayne, IN high-priority TripleCrown train navigates past the complicated track layout of a location known as SH Interlocking on Terminal Railroad Association of St. Louis trackage. This train only has a few more miles to go before it will hit home rails (Norfolk Southern's Brooklyn District) at Granite City, IL.