Here's a few shots from the layout over the past few months.
The first is the latest view of the helix - 3 1/2 loops complete with 2 1/2 to go (4 1/2 tiers oif subroadbed are in place - 1 1/2 left to be lowered as trackwork is completed on each tier).
The second is a shot of the power distribution system on the helix - on each straight section (each circle is broken into semicircles, and a 24" straight section inserted to reduce the grade) is a terminal strip that delivers power to all four tracks.
The third shot, from mid-August, shows the Glenrock, WY subroadbed being laid above the Northern Pacific Minneapolis staging yard. The helix is in the background. The track leaving the helix partway up on the left is the Chicago, Burlington & Quincy branch to Cody, WY. The upper track to the left is the CB&Q mainline coming from the bottom of the helix and heading towards Thermopolis, WY, which will be on the benchwork behind where I'm standing taking the photo. The lower track on the far left is the Chicago & North Western "Cowboy Line" to Lander, WY. Laurel, MT is the small NP yard and NP/CB&Q Junction to the right of the aisle.