I removed the double cross over and put in three switches. I also added a run around track (the two tracks on the upper left) to represent the town of Smith River, the cross over (bottom right) allows continuous running, everything to the right is Grants Pass. The track at the bottom right (you can just see the switch) continues on to Crescent City and Smith River, if you go straight, or to Portland and Medford (on the Southern Pacific) if you go to the right.
I am thinking about block switching both tracks at Smith River. There would be two slots for car cards, one for the Dock and one for the West Yard of which one would always be empty, arriving cars would go to the empty track and their cards to the correct slot and all the cars on the other track and their cards would be picked up. Portland could also be switched as a block, at the start of the day, the S.P. delivers all the cars from Portland and takes all the cars for Portland back.
The tracks under Patrick Creek are, from the left, Medford, on the S.P. (more on that later) the next switch divides the main line, left you go to Portland on the S.P. or on the main line to Crescent City and Smith River (this is the middle track) the next track (the right hand side track from the Smith River run a round) is divided into two storage tracks. So there are five tracks under Patrick Creek, Medford, Portland, the main line, Smith River Dock and Smith River West Yard. The view below shows the fascia that covers the tracks under Patrick Creek