2012-04-02 Update

Another weekend, and more progress. Upper loop- cut to shape and glued a few layers of the blue foam board "wedding cake". With some plywood on top, the upper loop is starting to take shape.

In the background, you can see the arc of the loop, a general placement of Lehigh Cement; the mid and foreground shows the overpass crossing and the left-right access portals for the lower loop. I've been spending a reasonable amount of time trying to visualize and mock up the land forms for the access tunnels to the lower loop.

I've also carved the river that will run along the tracks and exit out the side of the layout:

Some small cataracts will guide water to the channel, which will be small-ish (more of a storm ditch than a true stream). It's really coming together!