If you go around the Silver Mt road you can drive right to it. Thats the one that turns off the Bar-S Ranch road about half way up the hill. From Floating Island, aka Floating Mt, you can go south along the causeway to I-80 & that brings you out at about the 37 mile marker. There is a gate in the middle of nowhere on the causeway & you'll need a hammer to pop the hinges to go through.
Country rule of thumb is to put it back when you go through it.
Sid.