Help?

I’m starting to set up my first track since I was 15 (over 30 years ago). I plan on incorperating HO race track on the same platform as my trains. What I’m “trying” to do is make my own supports for the race track overpasses. Question is how would one go about making the look like poured concrete, just like the real ones?[?]

i would go to Woodland Scenics web site. they have all kinds of materials to build about anything in the world and they do answer your questions. i’ve built concrete walls with their stuff.