I have put up a 1,100 split rail fence, and am now faced with building
4 gates to go along with it. What I'm looking to build is something
similar to this:

http://tinyurl.com/yfrv6bg

which are cypress. But I don't currently have access to a good local
supplier of cypress and am wondering what else I can build these out
of and keep the weight down. Will P/T pine be too heavy? What are my
other options? How long will untreated pine last outdoors, off the
ground? The gate posts are 6x6's with a concrete collar. The
dimensions are approximately 12' x 3' for the entire gate, ~6'x3' for
each gate 'half'. No, I'm not going to paint or stain them.

Cheers