Great pic, FBO! - The same as Connie, I have plenty of experience of these bridges when hiking, and I have fallen into streams more times than I care to count... Not fun when you're miles away from the cabin and warmth.
Lovely one fbo. When hiking we often cross these little bridges; most are just logs. They can be very slippery, expecially in Autumn with the leaves turning into mush. I fell off once, and tore a ligament in my knee. But lots of fun ;-)