Southern Pacific Switching Layout

[Green_Elite_Cab]

How about this? I tried to angle the tracks a bit so that they wouldn't be parallel with the ends of the layout. This should not only help give the layout some depth, but it allowed a broader radius at the top.

Starting at the"bottom" and going up, you have a generic ware house, with just a single spur. There may be space on the south wall for truck docks.

Next is a pair of stubs off the main track. the left hand track is for box cars and hoppers (the building be made so that you can spot cars where they belong). The right hand track i saw as a corn syrup unloading track, with pipes and a pump house parallel (yellow line)

Next, a curved turnout goes to the Intermodal Container facility (though it just occurred to me that you may have meant a box factory.... whatever). Small inter modal transfer locations like this do exist. I've seen one in Pennsylvania somewhere.

Finally, there is another blue warehouse. Once again, it could be whatever you envision it.

The only issue I can see is that because of the angle of the track, additonal warehouses may need to be flats along the side. The road doesn't have to go parallel to the track either, it could just go straight with another building there to give that "concrete canyon" look you mentioned sometime earlier.