I was reading this article on how scientist made a bridge out of water, just liquid water, using a high voltage of electricity. They flipped the switch and the water from one glass(well i'm not sure what they put it in, i am assuming a glass beaker) over the very air between the beakers and into the other glass, held up by nothing at all. You won't be driving cars across this thing anytime soon, they biggest they could make it span was 25mm. Supposedly the current restructured the water molecules to create it. I do know they used DC current though. Also the bridge only last for 45 minutes, because of heat, which as the article states, it went from 20(degrees) C to more than 60(degrees)C
Quoted from the article,http://www.physorg.com/news110191847.html)
Upon investigating the phenomenon, the scientists found that water was being transported from one beaker to another, usually from the anode beaker to the cathode beaker. The cylindrical water bridge, with a diameter of 1-3 mm, could remain intact when the beakers were pulled apart at a distance of up to 25 mm.
I'm not sure how much current was going threw them but I would be amazed and appreciate it if someone could find out, experimenting or however they could.