I am Modeling the Cleveland Flats Industrial District. The Flats were once served by at least four major railroads and a couple of regional ones. With limited rights of way available, the railroads stacked themselves atop each other. There were three separate rail lines crossing over each other and the Cauhaugua River at different elevations. There were dozens of level crossings and 11 railroad lift bridges all within a couple of miles. Two of the lift bridges are still in service: