so now that your percolating on a lift out how about using a separate piece of 2" pink foam board for the hatch cover then you only have the weight of the building or? to lift out of your way.
I myself have a 12' area for a town and intend to use the same foam for it as well.
am I mistaken that you can bypass bridge area seems like there was a wye or a line heading for the yard area or am I mixed up.
apparently your agreement with better half didn't include the ogr forum! can you hear my laughter. haven't heard you mention grandsons for awhile are they still helping you with the layout?