Southern Pacific's New Pollok cut-off

Name: Southern Pacific's New Pollok cut-off
Scale: HO scale
Era: 1954-56
Owner: Brian Moore
Location: Plymouth, United Kingdom

The New Pollok cut-off is an imaginary additional section of SP's Coast Line set in the period 1954-56, and features the type of locomotive power, passenger and freight trains common to that time.
It lives in my loft, and has a rectangular footprint of 18x8 feet.

It consists of a single main line and two separate scenic sections: one is a 12-foot-long semi-desert scene with a tunnel at one end, a main line and passing loop, and some lines off under a road bridge at the other, partly representing a motive power depot which caters for late steam and early diesels.
Power for freight trains is regularly swapped here, and this part of the layout is almost scenically complete.
The other side has a main line, depot (“Boswell CA”), a long passing loop, a reasonably-sized yard, team track and a siding into Fort Crookston Armored Proving Ground, an Army facility that tests armoured vehicles.
This side of the layout remains almost fully negligent of scenery, but has the buildings in place.
There are also eight hidden storage tracks (five double-ended and three stub-ended), the longest capable of taking an ABBA set, 22 40' reefers and a caboose.
Control is by a Lenz 100 DCC system, and all locomotives are sound-equipped.

Track is all Peco Code 83, and all switches are remotely controlled.

This layout is my first attempt at modeling SP operations on the Coast Line.
I'm concentrating on getting the locomotives and stock more prototypical, and relying on a “generic” Coast Line appearance, scenery-wise.
As per SLO, there's rather a lot of locomotive changes and helper attachment/detachments, and a reasonable degree of switching too.

Waybills and more formal ops are in the pipeline.