05-24-2010, 07:35 PM
this would make a great walkway bridge (from the LoC site HAER 292) called a Hadley Papabolic Bow ( leaticular truss) only three bridges were built in this comfigureation its 136" long and too wide for a foot bridge bur narrow it up to 6 or 8" and walla a master piece. And your just the guy to do and i dont think there will be too many on other layouts. 
jim
jim