These pictures were originally posted on the website of the Society of Model Engineers model railroad club at the Milwaukee School of Engineering. The website is no longer online, so I am posting them here.
At the end of the 1998-1999 school year, the Society of Model Engineers at the Milwaukee School of Engineering started on a new double-deck HO-scale based on the Wisconsin Central’s Chicago Subdivision between Burlington and Cedar Lake, Wisconsin, with staging yards representing Chicago, Illinois and Fond du Lac, Wisconsin.
These pictures of the layout were taken in early 2002 by a club member with a digital camera, though I don’t remember who, or even if they were all taken by the same person.
This first group of pictures were taken on January 19, 2002, and shows the first scenery on the layout at Mukwonago and some other interesting areas.

Trains in the Chicago Staging Yard

Mukwonago Bridges Under Construction

First Scenery at Mukwonago

First Scenery at Mukwonago

Waukesha Yard Empty

Burlington (lower level) and Slinger (upper level)
I’m not sure exactly when the following picture of the helix was taken, but it shows the details of the helix design.

Helix
The rest of these pictures were taken on March 1, 2002, the day before TrainTime started. These pictures show the basic scenery that was quickly completed in the week before TrainTime and areas that were still without scenery.

Bridge over Highway 83 at Mukwonago

Bridge over the Fox River at Mukwonago

Midway

Midway

Midway

Midway

Highway 20 Crossing

Highway 20 Crossing

Honey Creek

House at Honey Creek

Highway 20 Crossing

Bridges at Mukwonago

County Road ES Overpass at Mukwonago

County Road ES Overpass at Mukwonago

Waukesha Engine Terminal

Waukesha Engine Terminal

Waukesha Engine Terminal

Waukesha Engine Terminal

Waukesha Engine Terminal

Waukesha Yard

Waukesha Yard

Waukesha Yard

Waukesha Yard

Waukesha Yard

Trains in the Chicago Staging Yard

Staging Yards: Chicago (lower level) & Fond du Lac (upper level)

Burlington

Burlington & Echo Lake

Echo Lake Bridge Under Construction

Sussex

Helix

Overall View of the Layout

Overall View with Club Member Henry Bangsberg for scale