According to several sources, this is the longest 3 span covered bridge in the nation. It's 460' long and is just off of one of Indiana's better roads for the art of motorcycling, State Road 135.
I normally ride to this bridge at least once a year but haven't made it this year. If your looking for a good Southern Indiana road trip, this is worth the ride. Lots of good two lane highways in the area in addition to 135.
They've been in the process of rebuilding it for several years, it'll be good to walk across it now that it's done.
http://www.wdrb.com/story/15068366/historic-covered-bridge-in-medora-re-openshttp://en.wikipedia.org/wiki/Medora_Covered_Bridge