In my usual fashion, this rebuild was documented in time-lapse.
Just for the heck of it, here's a history of all the Natural Arch Bridges through the years:
First Arch: September 2005; nothing fancy, just an arch out of paper mache
Second Arch, (sort of) June 2006: a modified version of the arch above, to accommodate the Pack mule trail (shown here painted in May 2007)
Third Arch: During the big Winter of '09 Desert redo, the arch above was torn out and a new arch was built (look at the bottom):
Fourth Arch, June 2009 :That arch only served as a placeholder for a few months until the previous version was made out of celluclay
Fifth Arch, October 2010: Hopefully the last natural arch I'll have to create. This time out of floral foam with accurate details, accurate paint scheme, and enough path envelope for the train.
That's it for this month's update; very short, but that's all I got going on, unless the Park's busy season's calm down or the midterms die down-- both of which I doubt will happen with winter approaching. But, as I always say, we'll see.