My son will be starting on his Eagle Scout project later this month. He's building a wooden bicycle bridge over a small creek at a local county park. The park has asked that the decking for the bridge be made from rough cut pressure treated 2x4's. Apparently, the rough cut lumber provides better traction for the bicycles when it gets damp. I've never purchased any rough cut lumber before, but it's obviously not something we can just run up to the local Lowes or Home Depot and buy. Does anyone know of a source for rough cut pressure treated lumber in the central North Carolina area? Thanks in advance for the help.