I am having a new interstate highway overpass made by Dr. H's Trains that will traverse the left rear corner of my layout. It will be a 4 lane with median limited access highway modeled after Route 80 which stretches from NYC to San Fransisco. This section will be up on cement piers and bridgework and feature rush hour traffic. Any do's and don't's that you can offer?
If anyone has done this pics would be wonderful.... Thanks all.