Ok here it is just trying to narrow things down a bit for a double rail bridge over the gorge. As you can see on the styrene template I made up there are 2 rails outlined or actually the edges of the ties are outlines , then the lines outside of that are the min clearance according to the nmra guage except for the upper rail in the pic where the edge of the styrene is actually the limit. You can see I marked the distance from edge of gorge to other side which would be 13 inches across bottom from side to side and 10-5/8 inches on top side to side I would need a widest width of a bit more than 5-1/2 inches if I were to make a straight beamed bridge ( truss type ) or even with low sides because of the clearances needed which is one big bridge. There is 1/4" clearance between the 2 rail clearances on the inside curves making it impossible for 2 single curve bridges. So I'm thinking that any type of bridge that shows the top is out of the question and I'm leaning toward a below bridge or like a deck bridge. So I'm looking for all options and suggestions and pictures would be great.
here's the template I traced by placing the properly cut sized styrene under the tracks and tracing along the ties
this is the below type deck bridge which may be constructed in a couple seperate bridges
this is the truss type of bridge whether with overhead or just sides that would take quite a bit of room because of the straight beeams needed from one side of the gorge to the other
here's the template I traced by placing the properly cut sized styrene under the tracks and tracing along the ties
this is the below type deck bridge which may be constructed in a couple seperate bridges
this is the truss type of bridge whether with overhead or just sides that would take quite a bit of room because of the straight beeams needed from one side of the gorge to the other