My wife and self from Australia will be touring the USA for three months in a C19 foot RV. One of the places we would like to visit is Custer State Park in late May. We would like to travel from Mt Rushmore to Custer State Park. I note that there a three tunnels on Iron Mountain road (US-16A). Has anyone on the forum driven on this road with an RV? If so how large was your RV?
We will be staying for two days and then travelling onto Crazy Horse memorial via US 16/385 as the Needles Highway with one tunnel at 10'7" seems quite low.
Any help would be appreciated