I took those pictures in June, 2008 and remember it pretty well. Of course as you know, the bridge sits right off of the road and is easily visible. When I was there I started taking pictures from the road and Mrs. Schreyer came out and was very friendly and was more than happy to talk about the bridge. Her husband, I believe, was the one responsible for moving the bridge to the family farm. She said they were talking about doing some maintenance on the bridge as it was getting a little shabby in places.
Fast forward almost 5 years and of course it is possible that things have changed. I would certainly say that you should approach the current owners as it doesn't hurt to ask and the worst they can say is no.