Large supporting structure for transport overpass

I would like to suggest a supporting structure, building like the vehicle ramp, but to pass overtop the conveyor/pipe while offering a clean space underneath for truck passage... Because, really really too many small pillar. I imagine it as a flat surface over a central pillar or 4 small pillar at the corners.

Like foundation pieces and pillars in Satisfactory. In that case, we need ramps too.