I'm at the Staff academy in Camp Pendleton Ca. When I go home this weekend, I'll break out my new camrea nad get you all some really bitchin shots of all three bridges I have! I might set them up in my living room or my backyard and take some pics with figures....

As far as building them, do you mean how to manufacture the parts? Or how the parts go together? I didn't manufacture them, I bought them. They are old models created by the Army to train Combat engineers. If you wanna know how to assemble them;

http://www.military-info.com/MPHOTO/p021a.htm

FM 5-277