Dommbuilder Bridges

Can you make things such as tables and bridges that you can walk under and over in Doombuilder? If so how?

You need a source port that supports 3D floors. That means Legacy, EDGE or Vavoom. If you use one of those you can do it with every editor available if it supports that source port.

Damn Doomsday!

I would have assumed Doomsday supports floor over floor, but I guess not O_o

Risen 3d does apparently, I dont know from experience.

Also, DosDooM supports 3d floors too, for the record :>

in zdoom you can make a bridge by lining up a bunch of "main" textures.
Alternatively use a sourceport that supports 3d floors.

Zdoom works for it? Also what do you mean by lining up main textures? I wanna learn how to make bridges too.

Zdoom doesnt support real, as in thick, 3d floors, but you can create bridges with tutorial here, including screenshot:

http://zdoom.org/zdkb/bridge.html