It's gorgeous too!
That's me near the end of the bridge...Don't look down!
We absolutely loved it - even though it was a 5 hour drive to get here - it's right on the border of Montana/Idaho. When you pass through the first long tunnel on the trail you are officially in Idaho. The wonderful thing about it was it is a slow grade (since it was originally for trains) and you don't have to pedal all the time! Great activity for families with kids and even older folks. It's also been named one of the most scenic bike trails in the U.S.
Yes, I know I sound like a commercial again...