How to make the "Bridges" on a Obsidian Generator?

Hello! I recent tried to build a obsidian generator.

i build 2 floors with water and now i have the 4 pillars around the centre.


Spxify made this one b4 and idk how he did it but between each pillar it whould be a
1x3 "bridge" that toggle if you rightclicked one of the pillars.
Also when you right click all 4 bridges between the pillars apears, which means all
for is toggle at the same time.

I though about the "Hidden passage rune" but how to make it go

that way ---------->

instead of down?

and all shall be toggle at the same time?

If anyone got any idea on how to make that work please pm me or comment (or if possible show me ingame?)