QUOTE: it was kind of funny but I was in a bind having to bridge a gap in an area right after a # 6 switch. The straight area was easy using a pier girder but the curved area past the switch I ended up building a rather old delapidated curved girder out of thin plywood and dowels. Just cut my curves from the plywood using a scroll saw and added dowel piers to hold it up as well as wedging it into the foam banks with adhesive. It turned out very strong and looks pretty. I put road bed across the top and leveled it with the existing roadbed on the banks.