One of the more harrowing aspects of our Western US trip was driving narrow, twisting, and very tight roads like the Iron Mountain Road, also known as the Peter Norbeck National Scenic Byway, up and down mountainsides.
The Iron Mountain Road is the more scenic route to Custer State Park (our next destination), but it has tons of switchbacks and narrow tunnels that could only fit one car at a time.
Complicating matters was the large number of motorcycles on the road and wet driving conditions. The scenery, however, was worth it,
as was the sight of wooden “pigtail” bridges, also known as spiral bridges.
These bridges are used in steep terrain when the road loops over itself and permits a road to climb rapidly. And boy did we have a rapid ascent and descent!