ME's viaducts are easy to curve, just shorten the girders. The kits I bought, years ago, even included how much to shorten them for a given curve.
However, they don't look much like that picture.
If you can't find an Elevated structure that looks right, it looks like Central Valley HO truss bridge girders could be used to build the supports. They are (or were) available separately, so you don't need to buy the entire HO bridge kit. Combine them with ME girders and it should be close.