You can get kits to build in HO scale for wooden truss bridges:
http://www.blackbearcc.com/ho_kits.htm#truss_kits
http://www.blackbearcc.com/tbk_ho.htm
http://hogtrainz.com/MIDWESTBRIDGEKITS.htm
http://www.fleamarketstore.com/ca/4-290506104571-479/148oon30_mcdonald_truss_bridge_kit_in_wood_amp_bronze.htm
Just for starters.
-G .
Just my thoughts, ideas, opinions and experiences. Others may vary.
HO and N Scale.
After long and careful thought, they have convinced me. I have come to the conclusion that they are right. The aliens did it.
I suspect you'll do better getting an answer over on the MR forums. If that doesn't work, a nicely worded request on the Steam and Preservation forum might point you in the right direction to search for plans.
Larry Resident Microferroequinologist (at least at my house) Everyone goes home; Safety begins with you My Opinion. Standard Disclaimers Apply. No Expiration Date Come ride the rails with me! There's one thing about humility - the moment you think you've got it, you've lost it...
Model forums....this is for 1:1 scale
Never too old to have a happy childhood!
Any one know some good web sites for instructions as to construct wooden truss bridges for HO?