Any wood kept reasonably dry will last virtually forever. Any spots where the roof fails the wood will rot quickly. Then the differences between species make big differences in the rate of rot.

I have no idea what your relative humidity range is, but if you are in Missouri, guessing from your linked supplier, you should be good with any of them if properly engineered and used.The wood exposed to weather needs to be protected, especially where two pieces of wood or other material join and might trap water. wood only rots in a fairly narrow moisture content range centered around 20% or so, which is pretty wet.


Mark Begich, Joaquin Jackson, and Heller resistance... Three huge reasons to worry about the NRA.