Well, this took me about a month or so, with other jobs in between. I'm hurrying to get it finished before September 14, when there will be an offical introduction of these 2 reconstructions. As you well know it's quite complicated to match objects and terrain. Like making a revetment/timbering along the canal, it means making fidling, adjusting, refitting... hoping it kind of fits.
I don't know actually. Seems like your US method would be smarter. I will ask around (now you triggered me). It might be so the line could pass over lower objects along the canals. I now encounter a new 'problem; I need to redo a bridge, but there's also a drawbridge further down. But the new bridge is not a drawbridge, and should thus be pretty high (they can take the mast down, but there's still all the luggage/freight on the roof). Indeed seems strange. And difficult to match with the terrain, as it should have 2 pretty robust ramps (I draw them as local heightmaps, which takes a lot of fiddling).