Thanks guys for all the help. With all of your guys help I’ve come up with a general idea of how things are going to be for that area. The only thing I’m not sure if I like that the mainline crosses itself. Here is a rough Drawing of what it might become
I don’t know if this idea will work for you…
Clearly we get crossings at grade where two seperate RR cross paths… so to explain you crossing fabricate a history that two RR crossed but both have been cut back. Now your lines use the old interchange track the link between the two dead ends and the route stays alive…
How’s that? To flesh out the idea the track from top right needs to have an abandoned/disused route out to the bottom left and vice versa for the other route.
I have worked as a carknocker at several auto plants on the NS for a contracter .
At the older GM and Ford plants Auto parts box cars and frame flats enter the plants in long sidings inside the plant , some plants have sidings on the outside of the plants for scrap loading , and auto racks are loaded outside most plants where they usually have 5 to 7 tracks that hold 5 to 7 auto racks ; autoracks cannot be loaded more than 7 car lengths (AAR Rule).
The new Japananese auto maker plants get auto racks and gons for scrap loading , as well as steel coil cars for stamping , parts usually come in containers carried on dedicated intermodal trains that are usually unloaded in a near by yard , I know that Toyota has plans for a small intermodal yards at some of their plants .
another thing that is usually done on tracks near the plants is autorack pretripping and inspection of the cars .
Hope this helps