Rolling down Saugatuck Hill, westbound CP container on flat car train R503 crosses the Kalamazoo River Bridge on CSX's Grand Rapids Sub. Passing over the 1907 built former swing span bridge, CP SD40 5403 (exQNS&L), M-630 4555 and SD40-2 5665 are thirty six miles into their trip to Chicago and Soo Line's Schiller Park Yard.