This photo (courtesy of Pat Van Eaton) shows the building of a puncheon road (plank road) in Alder. The puncheon planks stacked on the right would be laid crossway to create the roadway.
These plank roads were popular in the 1800s, but gave way to paved roads. Today if you want to see one, it will probably be in a Western movie.
Eatonville To Rainier 