I recently wrapped up construction of Memorial Falls, this is a fictitious location set in the Cascade Mountain Range. It is loosely based on the area around tunnel #11 on Pengra Pass, but also takes notes from Multnohmah Falls on the Columbia River Gorge. I was challenged to build a scene detecting “For Glory and Honor” with the base being a maximum of 8” x 8” with up to 2” of overhang on all sides. The overall build ended up being 12”x12”x22” so a pretty good sized display diorama. 
 

Mock up made from a dog food box. I envision it as two stories with a loading dock on the front side. So the bottom part of the box would be foundation.

What's the secret?  I'm trying to build a station platform on a 24" radius curve.  My hands are too shaky to cut it smoothly and it takes many passes with the knife to be able to cut through.  I considered using a fine-blade on a coping saw but was concerned it would shatter the styrene.  And no, I don't want to spend hundred of dollars on a Cricket or fancy electronic cutting knife.

Any suggestions?

I've been a fan of these Atlas bridges for quite awhile, including when I put several of them on my first layout, the Central Midland.  They are made by Roco of Austria, and are a fine quality product.

On that original layout I sought out a double wide modification, and in that particular case I did not include the bottom deck floor portions. I also double-upped on that upper bracing piece