10/24/2012 7:10 AM
Daniel,,
I don't know if you are looking to save cash by doing something in house, but there's an outfit called Moosman Bridge that makes prefabricated rustic would assemblies in varying models that might fit your application. If nothing else, they have a lot of good pictures you could take to a builder locally that can help to outfit you with what you need. I haven't been on their website in a while, but I believe they have weight limitations for each style and so on.