The Troll Bridge is an interactive decoration that was available from February 24th to March 9th, 2011 in FarmVille as part of the Fairy Tale Event.
It was re-released on June 22nd, 2011, as part of the FarmVille Birthday Classics complementar event. It was able during 1 day (23 hours) as part of the Fairy Tale theme, on the 7th day.
Under this bridge (that can not be passed by the farmer) there is a troll that shows up everytime we click Look Up! on the decoration Menu.