The Senator Highway was first between 1866 and 1867 as part of the Prescott and Lynx Creek Toll Road. The toll was $1.50 per wagon and fifty cents (2 “bits”) for a horse and rider. In 1875, Samuel O' Fredricks, who owned the Senator Mine, developed a road from Groom Creek to his mine. By 1878, the road reached Alexandra, now covering 32 miles from Prescott. It was extended to Crown King over the next decade.

This popular off road route in some spots requires a high clearance vehicle and some 4x4 skills.