George I plan to build a bridge across my creek as you say using metal building truss material. I plan to use 3 inch sq tubing 14 ga. I have a 36 foot span. I'm considering a arch design or perhaps a covered bridge like "bridge's of madison county" .I like the treated lumber arch design listed here but under the canopy of my trees it will tend to rout very rapidly because it doesn't dry out for lack of sun exposure. As for telephone poles here is a link to a saw mill in Bowie, TX they actually saw the poles into dimensional lumber and beams(up to 8x8 x 28 ft long). I think I'll deck my bridge with this stuff. It looks like red cedar when freshly cut. http://www.sticesawmill.com/ the pricing is very reasonable. Good luck


The road goes on forever and the party nevers end...............................................