Might be an easier prospect to try and find 3 different takers for 1 span.
Although I would like to have a driveway that required a 3-span bridge!
Here's another link to the story that includes a bridge photo:
Kentucky is offering to dismantle and deliver the bridge to it's new location, for free, if they can just find someone to take it.
http://www.reuters.com/article/2011/10/25/us-kentucky-bridge-giveaway-idUSTRE79O79R20111025