South Dakota has to build some roundabouts into their road system near the monument. As we saw in DC, roundabouts completely confuse the cops.
There is a stunning view of Mt. Rushmore framed by a tunnel on Iron Mountain Road...near one of the pig-tail bridges...wonder if they have blocked that somehow...
For sure...we have one at a large intersection, and when it was first built ten years ago, the first crash was a deputy sheriff who plowed right through it headon.