Backing their train down the Iowa Interstate’s line and across the Calumet Sag Channel and through one of the five through truss bridges (four of which are still in service) that span the channel. Beyond the bridge, the train will switch to Indiana Harbor Belt’s Chicago Division and then move forward again (across the IHB’s Cal Sag Channel bridge, on which the westbound train in the distance is crossing) to IHB’s Blue Island Yard in nearby Riverdale. (Blue Island, Illinois - September 27, 2021)
