Where is the bridge for river crossing in the editor?

Where is the bridge for river crossing in the editor?

There is a very nice looking bridge for river crossings that I see in some user maps. It is arched and goes along the side of where you make a crossing over a river.

Where can I find this bridge (fence?) to use in the editor on my maps? I can not find it anywhere.

Sorry, I do not understand much german, but I do enjoy the maps here.

Thank you