Long time, no post. I've been busy building things, will post them layer, but thought I should post the bridge I just built to connect to my modular risers I've built. Like all the other parts, this has its base as a 3D print, in this case 3 different pieces- 2 3" long by 2" tall risers and one bridge section, designed in FreeCAD. When I glued it together, I left the centre unglued, allowing me to use whatever 2x2 tile I wanted in the middle.
I covered the top in my standard cobbles/setts and the sides in my usual 1/4" thick stones, but the underside was 1/8" thick foam to preserve as much space as possible under the bridge.
If I were to do it again, I really should have made it modular, with each side being one piece, which would allow ruined and centre sections. Oops. Next time.