None that I know of personally.
This might not be of any help to you but this Datamined Object will likely be coming out in the future that might interest you.
It's a "transparent" bridge but will have some visual effects to it. Not exactly invisible though, but sorta like walking on air. Kind of lol.
it is possible to use achievement furnishing constellation tiles for an invisible platform ♡
the bottom of the furnishing is not rendered & only the edge is slightly visible
https://eso.mmo-fashion.com/constellation-tile-the-ritual/
*please note that the lux vendor constellation tiles are rendered @ the bottom