Hi everyone,
I think I spent more time than I “should have” with this task. I was playing around a lot with textures and I also ran into the problem of “ngons”, when applying the subsurface modifier to my bridge piece model.
Let me know if you are interested in the problem and in its solution. I will create another tutorial type topic of some sort.
For now, here is my updated archway / bridge model with textures:
The main stone and wood textures were downloaded from https://ambientcg.com/ (former cc0 textures). The planks feature a texture taken by me, which I already showed in my study display.
Stay safe!