Idaho State Highway Commission Created to Improve Transportation System [otd 03/13]

On March 13, 1913, the Idaho legislature established the State Highway Commission. They thus joined a nationwide trend to raise highway planning and construction to the state level. Prior to that, roads had been almost exclusively a local concern.
Country "Road." National Archives.
Of course, emigrant wagons cut the first roads across Idaho, starting in the early 1840s. The pioneers naturally did only enough to make the route passable. In 1857-1860, the U. S. Army built the first planned roads in ...