Completed the "wedge" area along the existing layout which will allow the west leg of the curve to cross the doorway. Glued, butted and screwed the base pine board to the shelf and side of the layout after removing the edging and then added the 1/2" plywood and 1" foam all cut to the same shape to form the wedge and get it to the same height as the existing layout.
It's pretty solid and will be even more so once I cut back some of the wedge towards the edge of the new track. I figure about 50% of the wedge as it now sits will be cut away. I wouldn't stand on it, but it shouldn't need any further support, either.
