Alright then, now that the facts are out of the way, let me get up on my soapbox and state my opinions about the FR277 closure.
First of all, I really don't understand why this season's snowfall totals (which are now completely irrelevant) merit a prominent mention on the map's addenda page, but the FR277 closure is buried here in the forum. The map addenda main page states:
Addenda only pertain to long term changes and updates. For short term road closures, please see the Adventure Cycling's Routes Temporary Road Closures discussion in our Forums.
The snow totals for this year were clearly a short-term situation. In contrast, FR277 has been closed for 10 months and counting. Is that not a "long term change"? It's time to update the addenda page.
I understand your frustration that this information got buried. Placed as it was within another post, we didn't see the FR 277 closure when it was posted, either.
The snowfall totals and methods for determining their impact on the route is information that probably should have made it onto the printed map. This is why it went on the addenda as well as in the forums. We want cyclists to have this information for planning purposes regardless of the year.
Second, I suggest that ACA get on the horn with the forest service and find out about possible re-routes that are not as big a detour. Anecdotal evidence suggests that such a route does exist. Motorcyclist #3 that I spoke with as I climbed Dollarhide never reappeared later in the day to backtrack his way out.
Finally, should you ride this? Almost definitely. Unless you are a real pack horse, you are looking at at most a 2 hour delay, and the countryside down here is really beautiful.
As I mentioned in my above post, someone will be contacting the Sawtooth National Forest for recommendations to deal with this closure. Though it appears it is doable to make your way through the closure, it may be the forest's stand that they do not want cyclists doing this. We will not advocate this course of action without their permission. After we have this conversation we will post the outcome.