This list is for the discussion of prototype and modeling information on operating practices, equipment, and property of the Iowa Interstate Railroad. This also includes CSX's New Rock Subdivision from Utica to Blue Island, IL, over which IAIS has trackage rights.

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Photo: A photo contest was held in Oct 2008 where a number of list members entered IAIS photos for the group's members to vote on. The theme was "IAIS 500s". The first ES44AC powered ethanol train, RICSXU, passes the depot at Morris, IL with the 510 alone in the lead with the 502 pushing on the rear in DPU mode. Chris Lastovich Photo.