I need help with my monorail station for StarCraft II project

I’m drowning in ideas right now, but I dont know how to craft them in 3D because I just started this week. If you feel like helping me finish my project please feel free to do so. I’m not planning anything ambitious. I just need a simple monorail station for the map I’m working on starcraft 2.

Monorail Station .blend (782.9 KB)

Something like this:

or this


I also uploaded a file that I started today, You can either continue it or start from the scratch,