I've added this lousy, rutted dusty fire road to create a complete trail map on MTB Project. While it's possible to end up on this route, it is not a recommended way to access Mt. Watson summit. Especially when there is a beautiful singletrack option, this route takes a backseat.
Use the Watson Peak Trail
instead which is a gorgeous, flowing climb with amazing views. This fire road gets chewed up by jeeps and motos in the summer, leaving it dusty and loose with some steep sections.