This was supposed to be a mock up so I could work out how the railway was going to cross the shed door to form the circular layout I wanted. Then the mock up worked so well, I just got stuck in!
I was determined to have a Walnut Tree style viaduct, all girders and spindly, with the valley far below. The valley you see here is only 20 cm below the bridge deck simply because when I made the valley deeper, the valley sides would have exceeded 45 degrees and it just looked wrong! I