Big Wash Road BLM
Big Wash Road is a maintained, but in places rough, dirt road about 20 miles Northwest of Kingman, Arizona. Dispersed camping is allowed on the unmaintained side roads starting about a mile from US 93. (The section by US 93 is on state land and has different camping rules.) Trailers and large rigs are not recommended on the steep switchback section starting about six miles from US 93. Verizon signal was marginal. Several sites were occupied when I was there.
There are two developed campgrounds along this road after the steep section. Packsaddle is free, has four tent sites uphill from the parking areas, a vault toilet, and trash can. Windy Point has 7 sites, is $8/night, and the camping areas are closer to the parking places. Some have good views down the canyon, but I bet it lives up to its name at times. There is a BLM web site for these campgrounds. Both campgrounds were empty early Saturday afternoon in mid-April when I looked at them.