It would be helpful to know what era you're modeling. A pure tressle bridge isn't really appropriate for modern diesels, but would be perfect for the late 1800's.
If I was doing it, I'd probably go with cut stone archs for most of it, and then do a warran truss bridge to span a larger area, but without seeing the surrounding area, it's tough to know for sure what would look best.
Take a look at this viaduct bridge by faller, it's a stunner.
Overall there are tons of options within the industry, just in HO we have 169 different bridge / piers in stock, so I'm sure with a little research you'll find the perfect solution.
If I was doing it, I'd probably go with cut stone archs for most of it, and then do a warran truss bridge to span a larger area, but without seeing the surrounding area, it's tough to know for sure what would look best.
Take a look at this viaduct bridge by faller, it's a stunner.
Overall there are tons of options within the industry, just in HO we have 169 different bridge / piers in stock, so I'm sure with a little research you'll find the perfect solution.
