I just returned from a weekend in Enterprise.
We camped at the Log House Campground www.loghouservpark.com. The hosts, Brian and Margaret are both riders and extremely hospitable. This would make a great layover point for anyone riding to the National through Lewiston. There is a ton of DS riding around Enterprise. As someone said around the campfire, "You can't make a wrong turn".
Regarding Wallowa Mtn. Loop (nfs39). It is closed this season. I heard that there is a bypass, Hess Rd.. I don't think Hess is paved. All three times I've been there to ride it, it has been closed.
So if you're in Enterprise-Joseph, any idea what the trick is for getting to Hell's Canyon on paved roads? I may have to rethink my route plan through that area since Nf 39 looked like the most direct route. Thanks for the heads up.