The USGS maps of the North Gate (Rachel Back Gate) area are incorrect. They show a split in the backgate road, short before it enters the restricted area. In reality, this split does not exist. Instead there is a smaller dirt road paralleling the backgate road to the north, that shows that split.
The same mistake also appears in the Nellis Range Chart maps, which are based on the USGS data.
This was first brought to our attention by our discussion forum member Crazymaler.