[Darren]

CCA treated lumber will still be available. There is no alternative for lumber destined for saltwater immersion. The 2.5 megatreated stuff unlike the wimpy .4 treated lumber they sold homeowners will still be available if you know where to get it.

 

[Darren]

I've got a foot bridge we use when the creek is way up. I use 2" oak on that for decking. It lasts two to three years. The same stuff used vertically on the barn lasts for decades. On a trailer, it won't last long.

 

[Darren]

The CCA treated lumber is the stuff that will no longer be sold to the general public. Depending on the amount of treatment it can range from a light green, .4, (the stuff sold at Home Depot, Lowes and most supply places and now banned) to a very dark green almost black, 2.5, (found at lumber yards specializing in supplying bulkheaders and other contractors doing marine work). The 2.5 stuff will still be available to contractors in coastal areas. No alternative exists, so it's excepted from the EPA ban.